Home

T7 Datasheet

1.
2. Name Start Address Type Access Default POWER_WIFI 48004 UINT 16 R W POWER_WIF _DEFAULT 48054 UINT16 R W POWER_WIFI The current ON OFF state of the WiFi module Provided to optionally reduce power consumption POWER_WIFI_DEFAULT The ON OFF state of the WiFi module after a power cycle to the device Examples Read IP Example To read the wireless IP address of a device perform a modbus read of address 49200 The value will be returned as an unsigned 32 bit number such as 3232235691 Change this number to an IP address by converting each binary group to an octet and adding decimal points as necessary The result in this case would be 192 168 0 171 Write IP Example To change the Wireless IP Address of a device perform a modbus write to address 49250 The IP address must be passed as an unsigned 32 bit number such as 3232235691 Change this IP address 192 168 0 171 by converting each octet to a binary group and sticking them together More Details Once default wireless configuration register s are changed it is necessary to also write 1 to the WIFI_APPLY_SETTINGS register Alternatively the default settings will be updated on the next power cycle Update WiFi Firmware The WiFi chip on the T7 is a separate chip from the main processor and it can be updated using the WIFLFIRMWARE_UPDATE_TO_VERSIONX register If connected to the internet the WiFi chip can download new firmware files from an ftp server To initiate a down
3. Name Start Address Type Access Default FILE_IO_DISK_SECTOR_SIZE 60630 UINT32 R FILE_IO_DISK_SECTORS_PER_CLUSTER 60632 UINT32 R FILE_IO_DISK_TOTAL_CLUSTERS 60634 UINT32 R FILE_IO_DISK_FREE_CLUSTERS 60636 UINT32 R FILE_IO_DISK_FORMAT 60638 UINT32 R FILE_IO_DISK_SECTOR_SIZE FILE_IO_DISK_SECTORS_PER_CLUSTER FILE_IO_DISK_TOTAL_CLUSTERS FILE_IO_DISK_FREE_CLUSTERS FILE_IO_DISK_FORMAT The name operations are where strings arrays are handled The registers that are type BYTE are AAI binary SD Card Access in Lua Scripts While running a Lua script and also using a WiFi connection files on the SD card should not be accessed any faster than once every 5 seconds Accessing SD card files from within a Lua script at fast rates may prevent WiFi reconnect attempts when the WiFi signal is lost or interrupted Ethernet and USB unaffected Use the following Lua psuedocode to write to a file once every 5 seconds and read an analog input once every 500ms See the Log voltage to file Lua examples in Kipling for an actual script example LJ IntervalConfig 0 500 set the DAQ interval to 500ms should divide evenly into file access interval LJ IntervalConfig 1 5000 set the file access interval to 5 seconds TableSize 5000 500 data DAQcount 0 for i l TableSize do data i 0 end while true do if LJ CheckInterval 0 then if a data point needs to be collected data DAQcount MB R 0 3 collect a new reading from AINO DAQcount
4. SPILNUM_BYTES 1 Transfer one byte SPLDATA_TX 0x55 Load a test data byte eWriteNameArray is the easiest way to write the outgoing SPI data SPLGO 1_ Initiate the transfer At this point the T7 will run the SPI transaction If no errors are returned the received data can be read SPLDATA_RX Read a test data byte eReadNameArray is the easiest way to read the received SPI data Because of the loop back the data read from SPlLDATA_RX will match the data written to SPI DATA_TX Following are approximate clock rates measured for various values of SP SPEED_THROTTLE with firmware 1 0150 0 780 kHz 65530 380 kHz 65500 100 kHz 65100 10 kHz 61100 1 kHz 21000 100 Hz 59 1 67 Hz The T7 has in internal watchdog that will timeout and cause the T7 to reboot if a single SPI transaction lasts longer than 250ms Stay safely above the following measured minimum values where device did not reboot for different numbers of bytes Bytes ThrottleValue ClockRateHz 1 1 67 Hz minimum 2 4900 73 Hz 3 23900 106 Hz 4 33900 140 Hz 10 52600 342 Hz 16 57400 544 Hz 32 61500 1095 Hz SPI Registers Name Start Address Type Access Default SPI_CS_DIONUM 5000 UINT 16 R W 0 SPI_CLK_DIONUM 5001 UINT 16 R W 0 SPI_MISO_DIONUM 5002 UINT 16 R W 0 SPI_MOSIL DIONUM 5003 UINT 16 R W 0 SPI_MODE 5004 UINT 16 R W 0 SPI_SPEED_THROTTLE 5005 UINT 16 R W 0 SPI_OPTIONS 5006 UINT 16 R W 0 SPI_GO 5007 UINT16 WwW 0 SPI_NUM_BYTES 5009 UINT 16 R W 0
5. 2018 Show All MIO 0 2 Read or set the state of 1 bit of digital O Also configures the direction to input or output Names Addresses MIOO MIO1 MIO2 2020 2021 2022 document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false Digital I O State Bit Masks Each of these is a single binary encoded value representing the state of 8 bits of V O Each bit represents an V O line Does not configure direction A read of an output returns the current logic level on the terminal not necessarily the output state written The upper 8 bits of these values are inhibits The inhibit bits prevent the corresponding state bit from being modified State Bit Masks Name Start Address Type Access Default FIO_STATE 2500 UINT16 R W EIO_STATE 2501 UINT16 R W CIO_STATE 2502 UINT16 R W MIO_STATE 2503 UINT16 R W FIO_STATE Read or write the state of the 8 bits of FIO in a single binary encoded value Does not configure direction Aread of an output returns the current logic level on the terminal not necessarily the output state written The upper 8 bits of this value are inhibits EIO_ STATE Read or write the state of the 8 bits of EIO in a single binary enco
6. A list of addresses to read each scan In the case of Stream Out enabled the list may also include something to write each scan Names Addresses STREAM SCANLIST _ADDRESSO 4100 4102 4104 Show All STREAM SCANLIST_ADDRESS1 STREAM SCANLIST ADDRESS2 Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false Additional configuration notes Additionally address 4018 STREAM_DATATYPE must be written with the value 0 Note that address 4018 STREAM_DATATYPE is not in Iim_constants json and is not compatible with LJM_NameToAddress STREAM_ENABLE must be written last The following registers do not necessarily need to be written as the defaults may be adequate STREAM_SETTLING_US STREAM_RESOLUTION_ INDEX STREAM_BUFFER_SIZE_BYTES STREAM_NUM_SCANS Data Collection Once stream has been initiated with STREAM ENABLE the T7 sends data to the target indicated by STREAM_AUTO_TARGET until STREAM_ENABLE is written with the value 0 Stream out streams that do not contain stream in channels see above do not send data 14 Modbus Feedback Auto Response Packet Protocol Bytes 0 1 Transaction ID Bytes 2 3 Protocol ID Bytes
7. Any USB Style Supply VS Terminals The VS terminals are designed as outputs for the supply voltage The supply voltage is nominally 5 volts and typically provided through the USB connector All VS terminals are the same The VS connections are outputs not inputs Do not connect a power source to VS in normal situations The max total current that can be drawn from VS is 500mA DeviceSupplyCurrent so if the T7 needs 250mA to run that leaves 250mA available from the VS terminals The voltage on VS can be noisy and can change unexpectedly Circuits that are sensitive to changing or noisy supply voltage such as bridge circuits should not be supplied from VS Power Supply Power supply for the T7 is typically provided through the USB connector For a different board level connection option see Alternate Power Supply in the OEM section Typical power supply sources include USB host or hub Wall wart power supply with USB connection included with normal retail units not OEM Power over Ethernet splitter e g TP Link TL POE10R with Tensility 10 00240 with Tensility 10 00648 Car charger with USB ports e g Anker 71AN2452C WA Rechargeable battery with USB ports e g Anker Astro E5 79AN15K BA perhaps with Belkin F3U133 06INCH Battery with car charger e g Anker 79AN15K BA with 71AN2452C 02WA Battery with solar panel e g Anker 79AN15K BA with 71ANSCP B145A Pigtail a cable with a USB B connector to get at the red a
8. Digital O 23 Logic Level 3 3V DIO is a generic name used for all digital V O The DIO are subdivided into different ports called FIO EIO ClO and MIO For wiring information on open collector signals driven signals controlling relays and mechanical switches see the digital signals app note FIO 0 7 EIO 0 7 CIO 0 3 MIO 0 2 pio o 123 4 5 67 8 9 1011 12 13 14 15 16 17 18 19 20 21 22 DIO Mapping There are 4 types of registers used for digital O interaction Simple DIO DIO State DIO Direction and DIO Inhibit Simple Digital l O Read or set the state of 1 digital V O Automatically configures the direction to input when reading or to output when writing FIOO FIO7 DIOO DIO7 EIOO EIO7 DIO8 DIO15 CIOO CIO3 DIO16 DI019 MIOO MIO2 DIO20 DI022 Digital I O Name Start Address Type Access Default FIO 0 7 2000 UINT 16 R W EIO 0 7 2008 UINT16 R W ClO 0 3 2016 UINT16 R W MIO 0 2 2020 UINT 16 R W FIO 0 7 Read or set the state of 1 bit of digital I O Also configures the direction to input or output Names Addresses FIOO FIO1 FIO2 Show All 2000 2001 2002 Show All ElO 0 7 Read or set the state of 1 bit of digital O Also configures the direction to input or output Names Addresses EIO0 EIO1 EI02 Show All 2008 2009 2010 Show All CIO 0 3 Read or set the state of 1 bit of digital O Also configures the direction to input or output Names Addresses CIO0 CIO1 CI02 Show All 2016 2017
9. RF section and filter by Style RP SMA to IPX or RP SMA to MHF 1 or RP SMA to UMC or RP SMA to UMCC Then look at the picture and make sure it looks correct as the application of the terms male and female are not totally standardized T7 Pro OEM ships with a simple 30mm U FL whip antenna such as the Anaren 66089 2406 WiFi Range The WiFi range on the T7 is typical for a modern WiFi device In direct line of sight with the router it s possible to get a decent connection at 100m The table below shows signal strength at varying distances with a stock T7 antenna and a simple WiFi router Both the T7 and the router were positioned 3ft off of the ground with direct line of sight Distance RSSI 10m 44dBm 25m 45dBm 50m 55dBm 3 4 100m 59dBm During testing it was noted that the T7 had slightly better WiFi range than an HTC One V cell phone The WiFi signal is spotty at RSSI lower than 75dBm and the connection will cut off entirely around 80dBm Note that 90 antenna orientation was used in testing above That is to say keep the antenna in the fully bent upright position don t try to point it at the router or accidentally leave it at 45 bent At 45 bent or directly pointed towards the router the signal strength is reduced by about 5dBm Note that the RSSI value you can read WIFI_RSSI is only updated when WiFi communication occurs That is if you talk to the T7 over USB to read the RSSI value you w
10. SPI_DATA_TX 5010 BYTE WwW 0 SPI_DATA_RX 5050 BYTE R 0 SPI_CS_DIONUM The DIO line for Chip Select SPI_CLK_DIONUM The DIO line for Clock SPI_MISO_DIONUM The DIO line for Master In Slave Out SPI_MOSI_DIONUM The DIO line for Master Out Slave In SPI_MODE The SPI mode controls the clock idle state and which edge clocks the data Bit 1 is CPOL and Bit 0 is CPHA so CPOL CPHA for different decimal values 0 0 0 b00 1 0 1 b01 2 1 0 b10 3 1 1 b11 SPI_SPEED_THROTTLE This value controls the SPI clock frequency Pass 0 65535 Default 0 corresponds to 65536 internally which results in 1 MHz 1 results in 100 Hz SPI_OPTIONS Bit 0 is Auto CS Disable SPI_GO Write 1 to begin the configured SPI transaction SPI_LNUM_BYTES The number of bytes to transfer SPI_DATA_TX Write data here SPI_DATA_RX Read data here 13 4 SBUS SBUS is a serial protocol used with SHT1X and SHT7x sensors from Sensirion Itis similar to I2C but not the same The El 1050 uses the SHT11 sensor Other available sensors are the SHT10 SHT15 SHT71 and SHT7 5 SBUS Registers Name Start Address Type Access Default SBUS 0 22 TEMP 30100 FLOAT32 R SBUS 0 22 RH 30150 FLOAT32 R SBUS 0 22 DATA_DIONUM 30200 UINT16 R W 0 SBUS 0 22 CLOCK_DIONUM 30225 UINT 16 R W 1 SBUS_ALL_DATA_DIONUM 30275 UINT 16 R W 0 SBUS_ALL_CLOCK_DIONUM 30276 UINT 16 R W 1 SBUS_ALL_POWER_DIONUM 30277 UINT16 R W 2 SBUS_ALL_CLOCK_SPEED 30278 UINT 16 R
11. The USB connector must be installed on the component side of the PCB A special high retention connector such as the Samtec USBR B S S O TH can also be used but it does take a good deal of force to unplug a cable from these so they are only recommended when you don t want to unplug very often itis also possible to simply solder the wires directly using the image below as a reference Anormal USB cable has a shield and the normal Type B connector connects the cable shield to the mounting tabs on the connector which are then soldered into the large USB mounting holes on the PCB If you are not using a normal USB connector and have a shield in your USB cable we recommend that the shield be connected to either of the large USB mounting holes on the PCB Usually the USB shield wires are aluminum which doesn t take solder very well so use a crimp connector like the Molex 02 06 2103 TE 61388 1 TE 350015 2 or the TE 60017 3 Secure the crimp connector to USB shield wires then squish down the tip of the connector to fit into the large USB mounting holes on the PCB J5 Alternate Power Supply The USB connector is a good way to bring in power even with some sort of custom cable but if you do not want the USB connector installed J5 provides alternate connections to supply 5V to the T7 The square shaped pad is V and the circular pad is GND It is useful for individuals who only need Ethernet or WiFi The J5 connector is a 2 pin 0 1 pi
12. counter value in software and subtract it from other values Example Enable CounterC on DIO18 CIO2 DIO18_EF_ENABLE 0 DIO18_EF_INDEX 7 DIO18_EF_ENABLE 1 Results can be read from the READ registers defined above Frequency Measurement Counters are often used to measure frequency by taking change in count over change in time Frequency CurrentCount PreviousCount CurrentTimestamp Previous Timestamp Typically the timestamps are from the host clock software but for more accurate timestamps read the CORE_TIMER register address 61520 UINT32 in the same modbus packet as the counter reads CORE_TIMER is a 32 bit system timer running at 1 2 the core speed and thus is normally 80M 2 gt 40 MHz Also note that other digital extended features are available to measure frequency by timing individual pulses rather than counting over time 13 1 9 Interrupt Counter Capable DIO FIOO FIO1 FlO2 FIO3 FIO6 and FIO7 Requires Clock Source No Index 8 Interrupt Counter counts pulses on the associated IO line This interrupt based digital O extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge See the discussion of edge rate limits at the bottom of this page Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 8 DIO _EF_OPTIONS Not used DIO _EF_CONFIG_A Not used 49 DIO _EF_CONFIG_B Not used DIO _EF_CONFIG _B Not used DIO
13. e A Indicates an I2C Ack bit writing a byte of data e C Indicates an I2C Clock stretch occuring to slow down transmission e N Indicates an I2C Nack bit writing a byte of data e P Indicates an I2C Stop Condition e R Indicates an I2C Read bit appearing after the slave address is sent e RESET Indicates an I2C Reset Condition Have Snynutoatesn s aStald dvertddiorbelow e W Indicates an I2C Write bit appearing after the slave address is sent 13 3 SPI The T7 supports Serial Peripheral Interface SPI communication as the master only SPlis a synchronous serial protocol typically used to communicate with chips that support SPlas slave devices This serial link is not an alternative to the USB connection Rather the host application will write read data to from the T7 and the T7 communicates with some other device using the serial protocol Using this serial protocol is considered an advanced topic A good knowledge of the protocol is recommended and a logic analyzer or oscilloscope might be needed for troubleshooting Example This is a simple loop back test Connect a jumper between DIO2 and DIO3 Data will be sent out DIO3 and read from DIO2 SPI CS_DIONUM 0 Use DIOO as chip select SPILCLK_DIONUM 1_ Use DIO1 as Clock SPLMISO_DIONUM 2 Use DIO2 as MISO SPLMOSL DIONUM 3 _ Use DIO3 as MOSI SPI MODE 0_ Select mode zero SPI SPEED_THROTTLE 65500 Set clock speed to 100 kHz SPLOPTIONS 0 _ No special operation
14. second calendar format i e 2014 10 21 18 55 35 Examples Lua Read the value of the RTC ina Lua script table table 1 0 year table 2 0 month table 3 0 day table 4 0 hour table 5 0 minute table 6 0 second table error MB RA 61510 0 6 print string format 04d 02d 02d 02d 02d 02d table 1 table 2 table 3 table 4 table 5 table 6 gt gt 2014 10 15 18 55 22 C C Read the value of the RTC in C C int LUJMError double newValue LUMError LJM_eReadAddress handle 61500 1 amp newValue printf newValue returned value of 1413398998 would correspond with with Wed 15 Oct 2014 18 49 58 GMT 19 0 RTC 20 0 Internal Flash The T7 has a flash built in flash memory chip and a micro SD card The built in flash is used to store calibration constants among other things The following registers are used to access built in flash memory For information about the SD card see the related section Flash Memory Name Start Address Type Access Default INTERNAL_FLASH_KEY 61800 UINT32 R W 80 INTERNAL_FLASH_READ_POINTER 61810 UINT32 R W INTERNAL_FLASH_READ 61812 UINT32 R INTERNAL_FLASH_WRITE_POINTER 61830 UINT32 R W INTERNAL_FLASH_WRITE 61832 UINT32 WwW INTERNAL_FLASH_ERASE 61820 UINT32 WwW INTERNAL_FLASH_KEY Sets the region of internal flash to which access is allowed INTERNAL_FLASH_READ_ POINTER The address in internal flash that rea
15. 0 STREAM_OUT 0 3 _ BUFFER_STATUS 4080 UINT32 R 0 STREAM_OUT 0 3 _ BUFFER_U16 10 Data destination when sending 16 bit integer data Names Addresses STREAM OUTO BUFFER U16 4420 4421 4422 Show All STREAM OUT1 BUFFER U16 STREAM OUT2 BUFFER U16 Show All STREAM_OUT 0 3 _ BUFFER_U32 Data destination when sending 32 bit integer data Takes up 2 bytes of the stream out buffer Names Addresses STREAM OUTO BUFFER U32 4410 4412 4414 Show All STREAM OUT1 BUFFER U32 STREAM OUT2 BUFFER U32 Show All STREAM_OUT 0 3 _ BUFFER_F32 Data destination when sending floating point data Takes up 2 bytes of the stream out buffer Names Addresses STREAM OUTO BUFFER F32 4400 4402 4404 Show All STREAM OUT1 BUFFER F32 STREAM OUT2 BUFFER F32 Show All STREAM _OUT 0 3 _ BUFFER_STATUS The number of entries in the buffer that are not currently being used Names Addresses STREAM OUTO BUFFER STATUS 4080 4082 4084 Show All STREAM OUT1_ BUFFER STATUS STREAM OUT2 BUFFER STATUS Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false STREAM_OUT 0 3 BUFFER_U32 STREAM_OUT 0 3 BUFFER_F32 STREAM_OUT 0 3 B
16. 1 12C Simulation Tool Click HERE for a larger version of this tool This javascript application is designed to help give an understanding of the LabJack s I2C functionality Each I2C register that effects the output is shown below The two registers that are omitted are I2C_GO and I2C_ACKS 12C_GO Executes the configured I2C request and I2C_ACKS reads the received ack s amp nack s packed into a binary array Test out various I2C configuration settings and view the expected result I2C Op S HOHOHORORH OHO OWA OHOHORORHOHOHOHORA P S HopoponoponoHoHRHA oH oH ot SDA FIO1 0 00000 0 0 0 00000 0 0 000 00 0 0 1 0 0 0 SCLIFIOO 7 x PI Enter 12C Configuration Settings Below I2C_SDA_DIONUM 1 I2C_SCL_DIONUM oO I2C_SPEED_THROTTLE 0 58 Enable Reset On Start Enable No Stop on Restart Enable Clock Stretching I2C_OPTIONS Result 0 Input below in hexadecimal I2C_SLAVE_ADDRESS 0 I2C_NUM_BYTES_TX 1 I2C_NUM_BYTES Rx 1 I2C_WRITE_DATA 0 I2C_READ_DATA XX Table Of Contents
17. 4 5 Length MSB LSB Bytes 6 1 Unit ID Byte 7 76 Function Byte 8 16 Byte 9 Reserved Bytes 10 11 Backlog Bytes 12 13 Status Code Byte 14 15 Additional status information Byte 16 Stream Data raw sample 2 bytes MSB LSB Status Codes 2940 Auto Recovery Active 2941 Auto Recovery End Additional Status Information is the number of scans skipped 2942 Scan Overlap 2943 Auto Recovery End Overflow 2944 Stream Burst Complete Stop To stop stream write 0 to STREAM_ENABLE All stream modes expect to be stopped except for burst stream see STREAM_NUM_SCANS for more information on bust stream Code Example A general low level stream example written in C C can be found here 3 2 2 Low Level Streaming 4 0 Hardware Overview The T7 has 3 different O areas e Communication Edge The T7 has a USB type B connector and an RJ45 Ethernet connector The T7 Pro has those and also has an SMA RP female connector and a WiFi antenna Power is always provided through the USB connector even if USB communication is not used e Screw Terminal Edge The screw terminal edge has convenient connections for 4 analog inputs both analog outputs 4 digital VO and both current sources The screw terminals are arranged in blocks of 4 with each block consisting of VS GND and two VO Also on this edge are two LEDs The Comm LED generally blinks with communication traffic while the Status LED is used for other indicatio
18. 5 to AIN1_RESOLUTION_INDEX 41501 Settling Example Change the settling time of AIN3 to 500uS by writing a value of 500 to AIN3_ SETTLING_US 42006 although we recommend a value of 0 which corresponds to automatic settling Extra Details 68 The analog inputs are not artificially pulled to 0 0 volts as that would reduce the input impedance so readings obtained from floating channels will generally not be 0 0 volts The readings from floating channels depend on adjacent channels and sample rate and have little meaning See related floating input application note Notice that the addresses for AIN AIN _ RANGE and AIN _ SETTLING _US increment in steps of 2 That is because they are FLOAT32 and thus each needs 2 16 bit registers AIN _NEGATNE_CH and AIN _RESOLUTION_INDEX are UNIT16 and thus just use 1 16 bit register each so their addresses step in increments of 1 The AIN 0 13 _ RANGE parameter is actually controlling the gain of the internal instrumentation amplifier The in amp supports gains of x1 x10 x100 and x1000 If you set range 10 you get gain x1 and the analog input range is 10 volts If you set range 1 you get gain x10 and the analog input range is 1 volts Note that the device knows what the internal gain is set to and adjusts the return values to give the voltage at the input terminals so if you connect a 0 8 volt signal to the input terminals it will be amplified to 8 0 volts before being digitized but the reading you
19. DAC values are based on an absolute reference voltage and not the supply voltage the DAC output buffers are powered internally by VS and thus the maximum output voltage is limited to slightly less than VS The DACs appear both on the screw terminals and on the DB37 connector These connections are electrically the same and the user must exercise caution only to use one connection or the other and not create a short circuit Power up Defaults The power up condition of the DACs can be configured by the user From the factory the DACs default to enabled at minimum voltage 0 volts Note that even if the power up default for a line is changed to a different voltage or disabled there is a delay of about 100 ms at power up where the DACs are in the factory default condition Protection The analog outputs can withstand a continuous short circuit to ground even when set at maximum output Voltage should never be applied to the analog outputs as they are voltage sources themselves In the event that a voltage is accidentally applied to either analog output they do have protection against transient events such as ESD electrostatic discharge and continuous overvoltage or undervoltage of a few volts Increase Output to 10V There is an accessory available from LabJack called the LJTick DAC that provides a pair of 14 bit analog outputs with a range of 10 volts The LJTick DAC plugs into any digital O block and thus up to 10 of these can be u
20. Index can not be changed in an update Depending on the feature reads and writes to the update registers have small differences See the Update portion of each features dedicated section for more information The following four registers can be used to update an active Extended Feature DIO _EF_VALUE_A Extended feature specific value DIO _EF_VALUE_B Extended feature specific value DIO _ EF _VALUE_C Extended feature specific value DIO _EF_VALUE_D Extended feature specific value Reset Some Extended Features can be reset while they are running Resetting can have different results depending on the feature For instance counters are reset to zero There is only one register associated with resetting DIO _EF_READ_A_AND_RESET Extended feature specific value Reading this resets the Extended Feature and takes a snapshot of READ _B so that it can be read as in the Read section Values are read before the reset DIO _EF_READ_A_F_AND_RESET Returns the same information as DIO _EF_READ_A F Reading this resets the Extended Feature and takes a snapshot of READ_B_F Values are read before the reset Digital Extended Features Name Start Address Type Access Default DIO 0 22 EF_ENABLE 44000 UINT32 R W DIO 0 22 EF_INDEX 44100 UINT32 R W DIO 0 22 _EF_OPTIONS 44200 UINT32 R W DIO 0 22 _EF_VALUE_A 44300 UINT32 R W DIO 0 22 EF_VALUE_B 44400 UINT32 R W DIO 0 22 EF_VALUE_C 44500 UINT32 R W DIO 0 22 EF_VALUE_D 44600 UINT32 R W DI
21. N S N S 1000 0 01V N S N S N S N S 1 10V 5 5k 2 2k 990 630 Resolution l 10 1V 5 5k 630 23 N S Index 5 l 100 0 1V N S N S N S N S 1000 0 01V N S N S N S N S 1 10V 2 5k 1 3k 630 315 Resolution l 10 1V 2 5k 320 N S N S Index 6 l 100 0 1V N S N S N S N S 1000 0 01V N S N S N S N S 1 10V 1 2k 650 315 N S Resolution l 10 1V 1 2k 220 N S N S Index 7 l 100 0 1V N S N S N S N S 1000 0 01V N S N S N S N S 1 10V 600 315 N S N S Resolution l 10 1V 600 N S N S N S Index 8 l 100 0 1V N S N S N S N S annn n av NS NS NS NS A distinction between the terms scan and sample must be drawn to better interpret the data from Table A1 4 A sample and a scan represent two separate parameters which make up a T7 data stream The definitions for each parameter are as follows N S indicates settings are not currently supported in stream mode Sample A reading from one channel address Scan One reading from a list of channels addresses scan list The scan rate by definition is a fraction of the sample rate where the fraction is the inverse of the number of channels being read ina single scan The scan rate is defined as ScanRate SampleRate NumAddresses The T7 has a maximum sample rate of 100 ksamples second The stated maximum sample rate is achievable when a stream is configured with Range 10V and ResolutionIndex 1 This is reflected in the fi
22. Names Addresses STREAM OUTO ENABLE STREAM OUT1 ENABLE 4090 4092 4094 Show All STREAM OUT2 ENABLE Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeIn return false STREAM_OUT 0 3 BUFFER_SIZE Number of bytes that will be allocated to this Stream Out s buffer Must be a power of 2 STREAM_OUT 0 3 ENABLE 1 Stream Out on 0 Stream Out off gt Buffers Each Stream Out has its own buffer Data is loaded into the buffer by writing to the appropriate buffer register Output waveform data points are stored in the buffer as 16 bit values so values greater than 16 bits will be converted automatically before being stored in the buffer Use only one buffer per STREAM_OUT channel For outputting an analog waveform DAC output write an array of floating point numbers to the STREAM_OUT 0 3 BUFFER_F32 register For outputting a digital waveform pass an array of integer 0 or 1 values to the STREAM_OUT 0 3 BUFFER_U16 register Stream Out Buffers Name Start Address Type Access Default STREAM_OUT 0 3 BUFFER_U16 4420 UINT16 WwW 0 STREAM_OUT 0 3 _ BUFFER_U32 4410 UINT32 Ww 0 STREAM_OUT 0 3 BUFFER_F32 4400 FLOAT32 WwW
23. READ_A F both return the high time and save the low time that can be read from READ_B and READ_B_F This ensures that both readings are from the same waveform cycle 13 1 7 Line to Line In Capable DIO FIOO FIO1 Requires Clock Source Yes Index 6 Line to Line In measures the time between an edge on one DIO line and an edge on another DIO line by counting the number of clock source ticks between the two edges The edges can be individually specified as rising or falling Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR Aypically 80M Divisor Time s DIO _EF_READ_A Clock Frequency Resolution s 1 Clock Frequency Max Time s DIO_EF_CLOCK _ROLL_VALUE Clock Frequency CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO_EF_CLOCK _DIVISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to a divisor of 1 For more details about Clock Frequency and DIO_EF_CLOCK _DIVISOR see the DIO EF Clock Source section Roll value for this feature would typically be left at the default of 0 which is the max value 232 for the 32 bit Clock0 but you might be using a lower roll value for another feature such as PWM output A couple typical scenarios with roll value 0 and using the 32 bit clock Clock0 Divisor 1 Resolution 12 5 nanoseconds MaxPeriod 53 7 seconds Divisor 256 Resolution 3 2
24. W 65000 SBUS 0 22 _TEMP Reads temperature in degrees Kelvin from an SBUS sensor El 1050 SHT1x SHT7x SBUS is the DIO line for the El 1050 enable If SBUS is the same as the value specified for data or clock line there will be no control of an enable line Names Addresses SBUSO_ TEMP SBUS1_ TEMP SBUS2_TEMP Show 30100 30102 30104 Show All All SBUS 0 22 _RH Reads humidity in from an external SBUS sensor El 1050 SHT 1x SHT 7x is the DIO line for the El 1050 enable If is the same as the value specified for data or clock line there will be no control of an enable line Names Addresses SBUSO_RH SBUS1 RH SBUS2_RH Show All 30150 30152 30154 Show All SBUS 0 22 DATA_DIONUM This is the DIO that the external sensor s data line is connected to Default FIOO Names Addresses SBUSO_DATA_DIONUM SBUS1_DATA_DIONUM 30200 30201 30202 Show All SBUS2 DATA DIONUM Show All SBUS 0 22 CLOCK_DIONUM This is the DIO that the external sensor s clock line is connected to Default FIO1 Names Addresses SBUSO CLOCK _DIONUM SBUS1_ CLOCK _DIONUM 30225 30226 30227 Show All SBUS2 CLOCK DIONUM Show All SBUS_ALL_DATA_DIONUM Awrite to this global parameter sets all SBUS data line registers to the same value Aread will return the correct setting if all channels are set the same but otherwise will return OxFF SBUS_ALL_CLOCK_DIONUM Awrite to this global parameter sets all SBUS clock line registers to the s
25. When using the Match or Skip Rom functions data can be sent to the device To do so set the number of bytes to send by writing to ONEWIRE_NUM_BYTES_RX and write the data to ONEWIRE_DATA_RX Reading data 63 When usi ng the Match or Skip Rom functions data can be read from the device To do so set the number of bytes to send by writing to ONEWIRE_NUM_BYTES_TX and write the data to ONEWIRE_DATA_TX Example Configure the T7 s 1 Wire interface and obtain a temperature reading from a DS18B22 Configuration Write the common configuration that will not change the DQ line DPU and options For this example we will use EIO6 14 as DQ and the DPU will be left disabled ONEWIRE_DQ_DIONUM 14 ONEWIRE_DPU_DIONUM 0 ONEWIRE_OPTIONS 0 Read ROM The 64 bit ROM can be read from the device using the Read ROM function if it is the only device on the bus ONEWIRE_FUNCTION 0x33 ONEWIRE_GO 1 The T7 will read the ROM from the connected device and place it in ONEWIRE_SEARCH_RESULT This test resulted in ROM code 0x1D000005908D4728 Search for ROM If there is more than one device on the bus the search function can be used to find the ROM of one of the devices Note that this method does not provide any information about which device has the ROM discovered ONEWIRE_PATH 0 ONEWIRE_FUNCTION OxFO ONEWIRE_GO 1 The LabJack will perform the 1 Wire search function If a ROM is found it will be placed in ONEWIRE_ROM_SEARCH_RESULT and any
26. and T are returned values e On the T7 Lua s one and only numeric data type is IEEE 754 single precision aka float This is more important than it sounds Here a good article on floating point numbers and their pitfalls Floating Point Numbers e Examples contain comments and currently comments consume a lot of code space You may want to limit comments if you are making a long script gt 200 lines LabJack s Lua library Data Types Same types as the LUM Library 0 unsigned 16 bit integer 1 unsigned 32 bit integer 2 signed 32 bit integer 3 single precision floating point float 98 string 99 byte The byte dataType is used to pass arrays of bytes in what Lua calls tables Available Functions The basic Lua libraries are extended by a LabJack specific library Below are the available functions MB R Value MB R Address dataType Modbus read Will read a single value from a modbus register That item can be a u16 u32 a float or a string MB W MB W Address dataType value Modbus write Writes a single value to a modbus register The type can be a u16 u32 a float or a string MB WA error MB WA Address dataType nValues table Modbus write array Reads nValues from the supplied table interprets them according to the dataType and writes them as an array to the register specified by Address The table must be indexed with numbers from 1 to nValues MB RA table error MB RA Address dataType nV
27. as the I2C clock line Ex Writing 1 will force FIO1 to become the I2C SCL line 12C_SPEED_THROTTLE This value controls the I2C clock frequency Pass 0 65535 Default 0 corresponds to 65536 internally which results in 450 kHz 1 results in 40 Hz 65516 is 100 kHz I2C_SLAVE_ADDRESS The 7 bit address of the slave device Value is shifted left by firmware to allow room for the I2C R W bit I2C_NUM_BYTES_TX The number of data bytes to transmit I2C_NUM_BYTES_RX The number of data bytes to read 12C_OPTIONS Type UINT 16 UINT 16 UINT 16 UINT 16 UINT 16 UINT 16 UINT 16 UINT 16 UINT32 BYTE BYTE Access Default oO OO On OO On s E ee Advanced Controls details of the I2C protocol to improve device compatibility bit 0 1 Reset the I2C bus before attempting communication bit 1 0 Restarts will use a stop and a start 1 Resetarts will not use a stop bit 2 1 disable clock stretching 12C_GO Writing to this register will instruct the LabJack to perform an 12C transaction I12C_ACKS An array of bits used to observe ACKs from the slave device 12C_DATA_TX Data that will be written to the I2C bus 12C_DATA_RX Data that has been read from the 12C bus 13 2 1 Configuration Registers I2C Registers Name Start Address Type Access Default I2C_SDA_DIONUM 5100 UINT 16 R W 0 I2C_SCL_DIONUM 5101 UINT 16 R W 0 I2C_SPEED_THROTTLE 5102 UINT 16 R W 0 I2C_OPTIONS 5103 UINT16 R W 0 I2C_SLAVE_ADDRESS 51
28. at startup FIO3 Load emergency image This option loads a firmware image with minimal functionality kinda like Windows safe mode Used to recover from firmware corruption or bugs The update process is about all that can be done while in this mode 12 0 200UA and 10uA Overview The T7 has 2 fixed current source terminals useful for measuring resistance thermistors RTDs resistors The 10UA terminal provides about 10 pA and the 200UA terminal provides about 4 200UA 200 WA but the actual values should be read from the calibration constants or better yet measured in real time using a fixed shunt resistor 2 10UA 29 Using the equation V IR with a known current and voltage it is possible to calculate the resistance of the item in question Figure 12 1 shows a simple setup measuring 1 resistor The factory value of each current source is noted during calibration and stored with the calibration constants on the device These can be viewed using the Kipling software or read programmatically Note that these are fixed constants stored during calibration not some sort of real time readings Constant Current Sources Name Start Address Type Access Default CURRENT_SOURCE_200UA_CAL_VALUE 1902 FLOAT32 R CURRENT_SOURCE_10UA_CAL_VALUE 1900 FLOAT32 R CURRENT_SOURCE_200UA_CAL_VALUE CURRENT_SOURCE_10UA_CAL_VALUE For example To read the factory value of the 200uA current source perform a read of Modbus address 1902 and the resu
29. branches detected will be indicated in ONEWIRE_BRANCES The ONEWIRE_PATH field can be used to direct the LabJack to take a different path in subsequent searches Results ROM 0x1D000005908D4728 Branches 0x00000000000002 Now repeat the search with path set to 2 Results ROM OxFF00000024AD2C22 Branches 0x00000000000002 The search can be repeated to find the ROM codes of all devices on the bus Write start conversion command to the device Do instruct the sensor to start a reading we need to match the device s ROM and send one data byte The data byte contains the instruction OxBE ONEWIRE_FUNCTION 0x55 ONEWIRE_ROM 0x1D000005908D4728 ONEWIRE_NUM_BYTES_TX 1 ONEWIRE_DATA_TX 0x44 ONEWIRE_GO 1 The sensor will now start a conversion Depending on the sensor and it s settings up to 500 ms may be needed to complete the conversion Read conversion result from the device After a conversion has been complete we can begin the reading process This time we need to write the read instruction which is 0x44 and then read 9 bytes of data 64 ONEWIRE_FUNCTION 0x55 ONEWIRE_ROM 0x1D000005908D4728 ONEWIRE_NUM_BYTES_ TX 1 ONEWIRE_NUM_BYTES_RX 9 ONEWIRE_DATA_TX OxBE ONEWIRE_GO 1 We can now read the 9 bytes from ONEWIRE_DATA_RX Ox6A Ox0A 0x00 0x00 0x24 OxAD 0x2C 0x22 0x00 The 9 bytes contain the binary reading a checksum and some other information about the device The devices used was set to 12 bit
30. cycle simply set DIO _EF_CONFIG_A DIO_EF_CLOCK _ROLL_VALUE 2 CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO_EF_CLOCK _DWNISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to a divisor of 1 For more details about Clock Frequency and DIO_EF_CLOCK _DIVISOR see the DIO EF Clock Source section Configure DIO First set the DIO line low DIO 0 The line must start low for proper pulse generation DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 2 DIO _EF_OPTIONS Bits 0 2 specify which clock source to use 000 for ClockO 001 for Clock1 and 010 for Clock2 All other bits reserved and should be set to 0 DIO _EF_CONFIG_A When the specified clock source s count matches this value the line will transition from high to low DIO _EF_CONFIG_B When the specified clock source s count matches this value the line will transition from low to high DIO _EF_CONFIG_C The number of pulses to generate DIO _EF_CONFIG_D Not used Update DIO _EF_CONFIG_A Sets a new high to low transition point Will take effect when writing Config_C DIO _EF_CONFIG _B Sets a new low to high transition point Will take effect when writing Config_C DIO _EF_CONFIG_C Writing to this value will start a new pulse sequence If a sequence is already in progress it will be aborted Numbers previously written to Config_A
31. defects in material or workmanship The LabJack can be damaged by misconnection such as connecting 120 VAC to any of the screw terminals and this warranty does not cover damage obviously caused by the customer If you have a problem contact support labjack com for return authorization In the case of warranty repairs the customer is responsible for shipping to LabJack Corporation and LabJack Corporation will pay for the return shipping Limitation of Liability LabJack designs and manufactures measurement and automation peripherals that enable the connection of a PC to the real world Although LabJacks have various redundant protection mechanisms it is possible in the case of improper and or unreasonable use to damage the LabJack and even the PC to which it is connected LabJack Corporation will not be liable for any such damage Except as specified herein LabJack Corporation makes no warranties express or implied including but not limited to any implied warranty or merchantability or fitness for a particular purpose LabJack Corporation shall not be liable for any special indirect incidental or consequential damages or losses including loss of data arising from any cause or theory LabJacks and associated products are not designed to be a critical component in life support or systems where malfunction can reasonably be expected to result in personal injury Customers using these products in such applications do so at their own risk and
32. determined from measurements with the enclosure on and in still air We noted that the time constant was about 12 minutes meaning that 12 minutes after a step change you are 63 of the way to the new value Note on thermocouples The value from register TEMPERATURE_DEVICE_K best reflects the temperature of the built in screw terminals AINO AIN3 so use that for cold junction compensation CJC if thermocouples are connected there The internal sensor has a specified accuracy of 2 0 C across the range of 20 to 50 C Allowing for a slight difference between the sensor temperature and the temperature of the screw terminals expect the returned value minus 3 C to reflect the temperature of the built in screw terminals with an accuracy of 2 5 C If thermocouples are connected to the CB37 you want to know the temperature of the screw terminals on the CB37 The CB37 is typically at the same temperature as ambient air so use the value from register TEMPERATURE_AIR_K for CJC Better yet add a sensor such as the LM34CAZ to an unused analog input on the CB37 to measure the actual temperature of the CB37 19 0 RTC T7 Pro only 79 The T7 Pro has a battery backed RTC real time clock which is useful for assigning timestamps to data that is stored on the SD card during scripting operations Particularly in situations where the device could experience power failure or other reboots and does not have a communication connection that can be used t
33. from FILE_IO_OPEN Read file data from FILE_IO_READ using the size from FILE_IO_SIZE Write a value of 1 to FILE_IO CLOSE aRWN Pass file or directory names to the navigation registers to move around in the file structure FILE IO Navigation Name Start Address Type Access Default FILE_lIO_NAME_WRITE_LEN 60640 UINT32 WwW FILE_lIO_NAME_ READ LEN 60642 UINT32 R FILE_lIO_NAME_WRITE 60650 BYTE Ww FILE_lIO_NAME_READ 60652 BYTE R FILE_1O_NAME_WRITE_LEN FILE_10_NAME_READ_LEN FILE_1O_NAME_WRITE FILE_10_NAME_READ FILE IO File Operations Name Start Address Type Access Default FILE_lIO_OPEN 60620 UINT 16 Ww FILE_lIO_CLOSE 60621 UINT16 Ww FILE_lIO_WRITE 60654 BYTE Ww FILE_lIO_READ 60656 BYTE R FILE_lO_DELETE 60622 UINT16 Ww FILE_lIO_ATTRIBUTES 60623 UINT16 R FILE_lO_SIZE 60628 UINT32 R FILE_1O_ OPEN FILE_10_ CLOSE FILE_1O_WRITE FILE_10_READ FILE_10_DELETE FILE_1O_ATTRIBUTES FILE_1O_SIZE 83 FILE IO Directory Operations Name Start Address Type Access Default FILE_lIO_DIR_FIRST 60610 UINT 16 WwW FILE_lO_DIR_NEXT 60611 UINT 16 WwW FILE_lIO_DIR_CHANGE 60600 UINT 16 W FILE_IO_DIR_CURRENT 60601 UINT16 W FILE_IO_DIR_MAKE 60602 UINT16 W FILE_IO_DIR_REMOVE 60603 UINT 16 W FILE_IO_DIR_FIRST FILE_IO_DIR_NEXT FILE_IO_DIR_CHANGE FILE_IO_DIR_CURRENT FILE_IO_DIR_MAKE FILE_IO_DIR_REMOVE Read from the disk information registers to get free space and other information FILE IO Disk Information
34. get back will be 0 8 volts Write range 10 to get a range of 10V default range 1 to geta range of 1V range 0 1 to get a range of 0 1V or range 0 01 to get a range of 0 01V If you write a value in between the valid ranges the larger range will be used The AIN 0 13 _NEGATIVE_CH parameter pertains to differential readings On the T7 differential channels are adjacent even odd pairs only such as AIN2 AIN3 Thus the positive channel must be even and the negative channel must be 1 Only an even channel can have an associated negative channel so you will never write to odd channels of this register e g never write to AIN3_NEGATIVE_CH 41003 Channel numbers in the extended range above AIN15 are connected to AINO AIN13 and those dictate the even odd rule not the extended channel numbers see the Mux80 datasheet The AIN 0 13 _ RESOLUTION_INDEX parameter affects the ADC A higher Resolution_Index results in lower noise and thus higher effective amp noise free resolution with the tradeoff of longer sample times See the Noise and Resolution Appendix The value passed for Resolution_Index is from 0 8 where 0 corresponds to default 1 is roughly 16 bit resolution RMS or effective and 8 is roughly 19 bit resolution The T7 Pro has additional Resolution_Index settings 9 12 that use the alternate high resolution converter 24 bit sigma delta and correspond to roughly 19 bit to 22 bit resolution For command response readings the default v
35. gt 40 MHz Also note that other digital extended features are available to measure frequency by timing individual pulses rather than counting over time Edge Rate Limits This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge This makes it substantially slower than other DIO EF that are purely hardware based To avoid missed edges the aggregate limit for edges seen by all interrupt based DIO EF is 70k edges second If stream mode is active the limit is reduced to 20k edges second Excessive processor loading e g a busy Lua script can also reduce these limits The more proper way to think of the edge limit and understand error that could be introduced when using multiple interrupt based DIO EF is to consider that the interrupt that processes an edge can take up to 14 us to complete When a particular channel sees an applicable edge an IF interrupt flag is set for that channel that tells the processor it needs to run an ISR interrupt service routine for that channel Once an ISR is started it runs to completion and no other ISR can run until it is done except that stream interrupts are higher priority and will preempt other interrupts When an ISR completes it clears the IF for that channel So it is okay to have edges on multiple channels at the same time as long as there is not another edge on any of those channels before enough time to process all t
36. leads to the following expression R 0 384 DegC 100 which can be rearranged to DegC 2 604 R 260 4 We are determining R by measuring the voltage that results from a known current passed through R that is R V I so we can say DegC 2 604 V I 260 4 This tells us that the slope is 2 604 I and the offset is 260 4 To determine I you can just use 0 0002 amps or use the factory calibration value read from CURRENT_SOURCE_200UA_CAL_VALUE or use a precision fixed resistor as mentioned above to measure in real time Assume we read the factory cal value as 0 000200 amps and thus use a constant slope of 2 604 0 0002 13020 We can now use the AIN EF feature to apply this slope and offset AINO_EF_INDEX 1 II feature index for type K thermocouple AINO_EF_CONFIG_D 13020 0 slope AINO_EF_CONFIG_E 260 4 offset Now reads of AINO_EF_READ_Awwill return 13020 0 volts 260 4 Note that you can come up with your own slope amp offset for your temperature region of interest For example we made this Google Spreadsheet and decided that Slope 2 720 degC ohm and Offset 277 5 works best for the region of 100 to 300 degC Note that a PT1000 simply has 10x the response of a PT100 3 84 ohms degC The offset still works out to 260 4 but the slope is 0 260 13 0 Digital I O 32 MIO1 FIOO FIO2 FIO4 FIO6 EIO2 EIOO EIO4 cio3 FIO7 EIO6 ciol FIOS FIO EIO5 MIOO EIO3 MIO2 cIoQ CIO2 EIO1
37. mode can all be specified The clock source for this feature is simply half the core frequency ClockFrequency CoreFrequency 2 Typically 80M 2 40 MHz Period s DIO _EF_READ_A ClockFrequency Frequency Hz ClockFrequency DIO _EF_READ_A The maximum measurable time is 107 s The number of periods to be averaged times the maximum expected period must be less than 107 s or the result will overflow 107 lt NumToAverage MaxPeriod By default Interrupt Frequency In will measure the frequency once and return that same result until it is reconfigured or reset At which point a second measurement will be made The other option is continuous mode In continuous mode the frequency is constantly being measured and read returns the most recent result Running continuous puts a greater load on the processor Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDExX 11 DIO _EF_OPTIONS Not Used DIO _EF_ CONFIG _A bit 0 Edge select 1 rising 0 falling Bit 1 1 continuous 0 OneShot DIO _EF_CONFIG_B Number of periods to be measured DIO _EF_CONFIG_C Not used DIO _EF_CONFIG_D Not used Update No update operations can be performed with Interrupt Frequency In Read DIO _EF_READ_A Returns the average period per cycle in ticks core clock ticks 2 DIO _EF_READ_B Starting with firmware 1 0114 READ_B returns the total core clock tick count DIO _EF_READ_A F Returns the average period per cycle in seconds T
38. on every applicable edge and the result registers are updated If you do another read before a new edge has occurred you will get the same value as before Many applications will want to use the read and reset option so that a value is only read once and extra reads will return 0 Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 3 or 4 DIO _EF_OPTIONS Bits 0 2 specify which clock source to use 000 for ClockO 001 for Clock1 and 010 for Clock2 All other bits reserved and should be set to 0 DIO _EF_ CONFIG _A Bit 1 1 continuous 0 OneShot All other bits reserved DIO _EF_CONFIG_B Not used DIO _EF_CONFIG_C Not used DIO _EF_CONFIG_D Not used Update No update operations can be performed on Frequency In 44 Read DIO _EF_READ_A Returns the period in ticks If a full period has not yet been observed this value will be zero DIO _EF_READ _B Starting with firmware 1 0114 READ_B will return the same value as READ_A This is a capture register itis only updated when one of the READ_A registers is read DIO _EF_READ_A F Returns the period in seconds If a full period has not yet been observed this value will be zero DIO _EF_READ_B F Returns the frequency in Hz If a full period has not yet been observed this value will be zero This is a capture register itis only updated when one of the READ_A registers is read Stream Read All operations discussed in this section are supported in command re
39. only AIN calibration values HR 4 HR 0 calibration for gain x1 HR 1 calibration for gain x10 HR 2 calibration for gain x100 HR 3 calibration for gain x1000 21 0 SD Card The microSD card is only useful for people who are using autonomous scripting since all other interactions with the T7 can be saved to the host PC hard drive As of this writing the T7 Pro ships with a 2 4GB micro SD card SLC technology RTC and battery battery holder installed The T7 has none of these but does have the socket installed to hold an SD card The retainer opens by sliding the metal piece forward then lifting Currently micro SDXC is not supported Generally speaking anything above 2GB is HC meaning high capacity and HC cards might need to be reformated before they work The T7 supports FAT and FAT32 file systems but some makes and sizes behave differently We recommend the following SD card format File System FAT Allocation unit size 64 kilobytes FAT32 with an allocation unit size of 16kb or 32kb sometimes works but smaller allocation sizes generally do not On 2GB cards it s possible to select FAT format with a 32kb allocation size and that sometimes works Care must be taken to ensure that power is not lost during file writing or disk corruption could occur The rated operating temperature of the SD card is 25 C to 85 C For extremely low temperatures customers can buy industrial grade SD cards such as the AF1GUD
40. rayonn e quivalente p i r e ne d passe pas l intensit n cessaire l tablissement d une communication satisfaisante Preface 1 0 Device Overview This document contains device specific information for the following devices T7 T7 Pro T7 OEM T7 Pro OEM This family introduces a new line of high quality analog and Ethernet data acquisition hardware with the main traditional advantage of all LabJack data acquisition hardware namely high performance and rich feature set ata competitive price point These features make the T series a logical choice for many high performance applications where Ethernet WiFi and cost are primary considerations 1 1 Core Features Analog I O e 14Analog Inputs 16 18 Bits Depending on Speed expand to 84 with Mux80 e Single Ended Inputs 14 or Differential Inputs 7 e Instrumentation Amplifier Inputs e Software Programmable Gains of x1 x10 x100 and x1000 e Analog Input Ranges of 10 1 0 1 and 0 01 Volts e 2 Analog Outputs 12 Bit 0 5 Volts Digital I O e 23 Digital VO e Supports SPI I2C 1 Wire and Asynchronous Serial Protocols Master Only e Supports Software or Hardware Timed Acquisition e Maximum Input Stream Rate of 100 kHz Depending on Resolution e Capable of Command Response Times Less Than 1 Millisecond Digital I O Extended Features Simple PWM Output 1 32 bit PWM Output w phase control Pulse Output w phase control Positive edge capture Negative edge captu
41. resolution so the conversion is 0 0625 C bit The binary result is data 0 data 1 256 The binary temperature reading is 1 256 Ox6A 256 106 362 To convert that to C multiply by 0 0625 So the final temperature is 22 6 C 1 Wire Registers Name Start Address Type Access Default ONEWIRE_DQ_DIONUM 5300 UINT16 R W 0 ONEWIRE_DPU_DIONUM 5301 UINT16 R W 0 ONEWIRE_OPTIONS 5302 UINT16 R W 0 ONEWIRE_FUNCTION 5307 UINT16 R W 0 ONEWIRE_NUM_BYTES TX 5308 UINT16 R W 0 ONEWIRE_NUM_ BYTES RX 5309 UINT16 R W 0 ONEWIRE_GO 5310 UINT16 W 0 ONEWIRE_ROM_MATCH_H 5320 UINT32 R W 0 ONEWIRE_ROM_MATCH_L 5322 UINT32 R W 0 ONEWIRE_ROM_BRANCHS_FOUND_H 5332 UINT32 R 0 ONEWIRE_ROM_BRANCHS_FOUND_L 5334 UINT32 R 0 ONEWIRE_SEARCH_RESULT_H 5328 UINT32 R 0 ONEWIRE_SEARCH_RESULT_L 5330 UINT32 R 0 ONEWIRE_PATH_H 5324 UINT32 R W 0 ONEWIRE_PATH_L 5326 UINT32 R W 0 ONEWIRE_DATA_TX 5340 BYTE R W 0 ONEWIRE_DATA_RX 5370 BYTE R W 0 ONEWIRE_DQ_DIONUM The data line DIO number ONEWIRE_DPU_DIONUM The dynamic pullup control DIO number ONEWIRE_OPTIONS Controls advanced features Value is a bitmask bit 0 reserved bit 1 reserved bit 2 1 DPU Enabled O DPU Disabled bit 3 DPU Polarity 1 Active state is high 2 Active state is low Dynamic Pull Up ONEWIRE_FUNCTION Set the ROM function to use OxFO Search OxCC Skip 0x55 Match 0x33 Read ONEWIRE_NUM_BYTES_TX Number of data bytes to be sent ONEWIRE_NUM_BYTES_RX Number of data bytes to be receiv
42. supported in command response mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A_AND_RESET Performs the same read as described above but then also clears the register so that zero is returned until another full period is measured DIO _EF_ READ _A_F_AND_RESET Performs the same read as described above but then also clears the register so that zero is returned until another full period is measured Example First configure the clock source Roll value would usually be set to 0 to provide the maximum measurable period but assume for this example that we have to use 10000 because of PWM output on another channel DIO_EF_CLOCKO_DNISOR 8 _ ClockOFrequency 80M 8 10 MHz DIO_EF_CLOCKO_ROLL_VALUE 10000 DIO_EF_CLOCKO_ENABLE 1 This clock configuration results in Resolution 1 10M 0 1 us and MaxPeriod 10000 10M 1 ms Now configure the DIO_EF on FIO0O as pulse width input DIOO_EF_ENABLE 0 DIOO_EF_INDEX 5 Pulse width input feature DIOO_EF_OPTIONS 0 Set to use clock source zero DIOO_EF_ENABLE 1 Enable the DIO_EF 46 After a full period rising edge falling edge rising edge has occurred the values are stored in the result registers and this repeats at each rising edge READ_A and
43. the text in the hardware overview block diagram Added pictures to the SD card section Added AIN_ALL_EF_INDEX to the list of registers in analog extended features Updated a few other extended feature descriptions Revision F April 2014 Added LED power registers to the LED section Changed names of I2C and SPI registers from 114 READ WRITE to RX TX Added WiFi network topology figures for connecting to an access point and controlling with a host Added WiFi signal strength vs distance from receiver RTCC real time clock and calendar section relabeled as RTC Some updates to AppendixA Revision E Feb 2014 Added sections for Flash Memory SD Card Stream Out and SPI The internal temperature sensor section now has complete information Also updated a few descriptions to registers Moved SPI I2C and Digital VO Extended Features into Digital O Moved many sections into appendices most notably the specifications page is now AppendixA Revision D Jan 2014 Added Scripting I2C sections updated many sections to include register information directly from the constants file Updated DIO_EF information Revision C Oct 2013 Added calibration constants information Modified URLs Updated many links to related support material Updated DIO information Revision B April 2013 Added many descriptions of Digital O extended features Modified a bunch of URLs Revision A February 2013 Original data sheet for the T7 family of devices 115
44. to the PC indicates that the T7 is enumerating Enumeration is when the standard USB initialization takes place and the host is gathering device information The COMM LED will blink when the T7 receives Modbus commands or when streaming data Each packet will produce a single blink If commands are issued rapidly the LED will blink rapidly At high packet transfer rates the LED will blink at 10Hz even though more than 10 packets are being processed per second Normal Power Up Behavior 1 Both LEDs blink rapidly for about 1 second 2 COMM solid off and STATUS solid on 3 If USB enumerates COMM blinks a few times and then stays solid on Combined LED Activity When the LEDs blink together the T7 is computing checksums When the LEDs are alternating the T7 is copying a firmware image LED Config Registers Name Start Address Type Access Default POWER_LED 48006 UINT 16 R W 27 POWER_LED_DEFAULT 48056 UINT 16 R W POWER_LED Sets the LED operation 0 Off Useful for lower power applications 1 normal 2 Lower power LEDs will still blink but will normally be off 3 Reserved 4 Manual in this mode the LEDs can be user controlled POWER_LED_DEFAULT The ON OFF state of the LEDs after a power cycle to the device 9 0 VS Power Supply Supply Voltage 4 75 5 25 volts 5V 5 Regulated Typical Active Current 300 mA le Ea Typical Sleep Current 8 mA Normal Power Connector USB B Receptacle Typical Power Supply
45. used to access the DB15 lines These 12 channels include an internal series resistor that provides overvoltage short circuit protection These series resistors also limit the ability of these lines to sink or source current Refer to the specifications in Appendix A 2 All digital O on the U6 have 3 possible states input output high or output low Each bit of V O can be configured individually When configured as an input a bit has a 100 kQ pull up resistor to 3 3 volts When configured as output high a bit is connected to the internal 3 3 volt supply through a series resistor When configured as output low a bit is connected to GND through a series resistor DB 15 Pinouts 1 Vs 9 ClOO 2 ClO1 10 CIO2 3 ClO3 11 GND 4 EIlOO 12 E101 5 ElO2 13 EIO3 6 ElO4 14 ElO5 7 ElO6 15 ElO7 8 GND DB15 Connector Pinouts 8 1 15 9 The above image shows standard DB15 pin numbers looking into the female connector on the T7 CB15 The CB15 terminal board connects to the DB15 connector It provides convenient screw terminal access to the 12 digital O available on the DB15 connector The CB15 is designed to connect directly to the DB15 or can connect via a standard 15 line 1 1 male female DB15 cable RB12 The RB12 relay board provides a convenient interface for the T7 to industry standard digital O modules allowing electricians engineers and other qualified individuals to interface a LabJack with high voltages currents The RB12 relay bo
46. 04 UINT 16 R W 0 57 I2C_NUM_BYTES_TX 5108 UINT16 R W 0 I2C_NUM_BYTES_RX 5109 UINT16 R W 0 I2C_WRITE_DATA 5120 BYTE R W 0 I2C_READ_DATA 5160 BYTE R W 0 I2C_GO 5110 UINT16 R W 0 I2C_ACKS 5114 UINT32 R W 0 12C_SDA_DIONUM The number of the DIO line to be used as the I2C data line Ex Writing 0 will force FIOO to become the I2C SDA line 12C_SCL_DIONUM The number of the DIO line to be used as the I2C clock line Ex Writing 1 will force FIO1 to become the I2C SCL line 12C_SPEED_THROTTLE This value controls the I2C clock frequency Pass 0 65535 Default 0 corresponds to 65536 internally which results in 450 kHz 1 results in 40 Hz 65516 is 100 kHz I2C_OPTIONS Advanced Controls details of the I2C protocol to improve device compatibility bit 0 1 Reset the I2C bus before attempting communication bit 1 0 Restarts will use a stop and a start 1 Resetarts will not use a stop bit 2 1 disable clock stretching 12C_SLAVE_ADDRESS The 7 bit address of the slave device Value is shifted left by firmware to allow room for the I2C R W bit 12C_NUM_BYTES_TX The number of data bytes to transmit I2C_NUM_BYTES_RX The number of data bytes to read 12C_WRITE_DATA Data that will be written to the I2C bus I2C_READ_DATA Data that has been read from the 12C bus 12C_GO Writing to this register will instruct the LabJack to perform an 12C transaction I2C_ACKS An array of bits used to observe ACKs from the slave device 13 2
47. 1 9 19 6 26 39 10 00 i a 2 d 6 8 10 20 5 14 13 4 j j j 11 21 4 7 5 66 1 Resolution Index 12 21 8 5 7 159 Gain Range 10 21V 1 15 4 48 0 3 Figure A 3 1 2 Analog input effective resolution over various 2 16 0 32 0 3 gains and resolution index settings 3 16 5 22 0 6 105 4 16 9 17 0 7 5 17 4 12 1 2 LSB Voltage Vs Resolution Index 6 17 9 8 5 2 3 ee ain 7 18 3 6 4 2 6 E Gain 10 8 18 7 4 9 3 1 E Gain 100 5 ee An 3g S 100 SSRN W Gain 1000 10 20 5 1 4 13 5 2 11 21 4 0 7 66 3 g 10 12 21 7 0 6 159 Gain Range 100 0 1V s 1 SS 1 13 3 21 1 0 2 14 2 11 2 0 3 14 7 7 8 5 0 2 4 6 8 10 4 15 2 5 5 5 0 5 15 7 3 9 54 Resolution Index 6 16 3 2 6 10 3 7 16 7 19 10 5 Figure A 3 1 3 Analog input LSB voltage over various gains and 8 17 2 41 4 11 1 resolution index settings 9 18 3 0 6 3 5 10 19 1 0 4 13 4 AIN Sample Time Vs Resolution Index 11 19 6 0 3 66 2 12 19 7 0 2 159 E cain 1 5 E Gain 10 Gain Range 1000 0 01V gt 100 E Gain 100 1 10 9 11 5 0 E E Gain 1000 2 12 3 4 1 10 0 E iy 3 12 7 3 1 10 1 4 13 3 2 1 10 1 e 5 13 8 1 5 10 2 a 6 14 4 1 0 10 3 0 1 7 14 7 0 8 10 6 8 15 0 0 6 11 1 9 15 4 0 5 3 5 2 4 6 8 10 10 16 1 0 3 13 4 Resolution Index 11 16 4 0 2 66 2 12 16 4 0 2 158 Figure A 3 1 4 AIN sample times for analog inputs over various gains resolution index settings Notes 1 The equation used to approximate the EFCR is determined using 3 3 standard deviations from the RMS nois
48. 1 Current source 10 pA use factory cal value 2 Current source specify amps in CONFIG_ 3 Shunt resistor specify Rshunt ohms and AIN to measure shunt voltage 4 Voltage source specify R2 ohms and Vexc volts 5 Voltage source specify R2 ohms and AIN to measure Vexc voltage CONFIG_C Excitation AIN Channel number of the AIN line used to measure the RTD s excitation CONFIG_D Reserved CONFIG_E Excitation detail Volts CONFIG_F Excitation detail Ohms CONFIG_G Excitation detail Amps Result Registers READ_A Final calculated temperature READ_B Resistance of the RTD READ_C Voltage across the RTD READ_D Current through the RTD 14 1 4 FlexRMS BETA Index 11 Min Firmware 1 0124 This analog input extended feature AIN EF determines the true RMS voltage of a signal on an analog input It also returns the peak to peak voltage DC offset average voltage and period 1 frequency of the analog waveform This feature uses stream burst internally to acquire a specific number of scans at a hardware controlled scan rate Set the scan rate to get the desired time resolution Set the number of scans to make sure you get at least 2 falling or 2 rising zero crossings A zero crossing is where the waveform crosses the average value After acquiring the entire data set we calculate an initial average of the entire data set and then must find 1 cycle rising to rising or falling to falling of the waveform whi
49. 11 27 AIN10 28 AIN9 29 AIN8 30 AIN7 31 AIN6 32 AIN5 33 AIN4 34 AIN3 35 AIN2 36 AIN1 37 AINO 38 GND 39 GND 40 GND J3 OEM Pin Header J4 Constant Current Sources Since the screw terminals are not installed on an OEM T7 the J4 header location can be used to gain access to the constant current sources Any 6 position 0 1 pitch rectangular header will work J4 1 200uA 2 GND 3 GND 4 GND 5 10uA 6 VS J4 OEM Pin Header J8 Mechanical The J8 pin header location is purely for mechanical support for that region of the board There are no electrical connections to this area litis a 2 position 0 1 pitch rectangular header Pricing Ordering For pricing amp ordering go to the main T7 Product Page 23 0 Watchdog The Watchdog system can perform various actions if the T7 does not receive any communication within a specified timeout period A typical usage is to first use the IO Config system to set the power up defaults for everything as desired and then configure the watchdog to reset the device on timeout For example consider a software program that enables the watchdog to reset the T7 witha 60 second timeout and then the software has a loop that talks to the device once per second If something goes wrong with the software or some other problem that causes communication to stop the T7 will reset every 60 seconds until communication resumes The watchdog timeout can be set as low as 1 second but such a low value is usually n
50. 24 Thermocouple type T Configuration Registers CONFIG_A TC_Options Bitmask containing additional options Bits 0 and 1 change the units of the output of the calculations READ_A amp READ_C The default is kelvin Bit 0 1 Report in C Bit 1 1 Report in F CONFIG_B CJC_ModbusAddress This is the modbus address that will be read to acquire the CJC reading The default is 60052 71 TEMPERATURE_DEVICE_K CONFIG_D CJC_Slope Slope to be applied to the CJC reading This value is always K volt regardless of CONFIG_A setting so for the internal sensor will nominally be 1 00 and for an LM34 will be 55 56 Default is 1 0 CONFIG_E CJC_ Offset Offset to be applied to the CJC reading This value is always K regardless of CONFIG_A setting so for the internal sensor will nominally be 0 0 and for an LM34 will be 255 37 Default it 0 0 Result Registers READ_A Final calculated temperature READ_B Measured thermocouple voltage READ_C CJC temperature READ_D Thermocouple voltage calculated for CUC temperature Example Assume a type K thermocouple is connected to AIN3 GND First write some values to configure AIN3_EF_INDEX 22 II feature index for type K thermocouple AIN3_EF_CONFIG_B 60052 _ CJC source address for device temperature sensor AIN3_EF_CONFIG_D 1 0 I slope for CJC reading AIN3_EF_CONFIG_E 0 0 offset for CJC reading Now each read of AIN3_EF_READ_Awill cause a new measurement to ha
51. 3 UINT16 R W 0 AIN_ALL_SETTLING_US 43904 FLOAT32 R W 0 AIN 0 13 Returns the voltage of the specified analog input Names Addresses AINO AIN1 AIN2 Show All 0 2 4 Show All AIN 0 13 _ RANGE The range span of each analog input Write the highest expected input voltage Names Addresses AINO_ RANGE AIN1 RANGE AIN2_RANGE Show 40000 40002 40004 Show All All AIN 0 13 _ NEGATIVE_CH Specifies the negative channel to be used for each positive channel 199 Default gt Single Ended Names Addresses AINO NEGATIVE CH AIN1 NEGATIVE CH 41000 41001 41002 Show All AIN2 NEGATIVE CH Show All AIN 0 13 _ RESOLUTION_INDEX The resolution index for each analog input Alarger resolution index generally results in lower noise and longer sample times Names Addresses AINO RESOLUTION INDEX 41500 41501 41502 Show All AIN1 RESOLUTION INDEX AIN2 RESOLUTION INDEX Show All AIN 0 13 _SETTLING_US Settling time for command response readings Names Addresses AINO SETTLING US AIN1 SETTLING US 42000 42002 42004 Show All AIN2 SETTLING US Show All AIN_ALL_RANGE Awrite to this global parameter affects all AIN Aread will return the correct setting if all channels are set the same but otherwise will return 9999 AIN_ALL_NEGATIVE_CH Awrite to this global parameter affects all AIN Aread will return the correct setting if all channels are set the same but otherwise will return OXxFFFF AIN_ALL_RESOLUTION_IND
52. 53 UINT16 R W POWER_ETHERNET The current ON OFF state of the Ethernet module Provided to optionally reduce power consumption POWER_ETHERNET_DEFAULT The ON OFF state of the Ethernet module after a power cycle to the device Isolation 20 The Ethernet connection on the T7 has 1500 volts of galvanic isolation All power supplies shipped by LabJack Corporation with the T7 have at least 500 volts of isolation Note that if you power the T7 from a USB host hub ground from the host hub is typically connected to upstream USB ground which often finds its way back to AC mains ground and thus there would be no isolation LEDs on the Ethernet jack Both the green and orange LEDs on the Ethernet jack will illuminate on connection to an active Ethernet cable The orange LED turns on when an active link is detected and blinks when packets are received processed The green LED illuminates when the connection is 100Mbps The orange LED is closest to the USB connector 1 The T7 cannot be directly powered via a Power over Ethernet PoE cable However it is relatively easy to find a PoE splitter that converts 48V on PoE to the 5V necessary for the T7 Such adapters run from 30 to 50 USD Used in combination the following parts work to split PoE e TP LINK TL POE10R To split 48V from the Ethernet cable into a 5 5mm OD 2 1mm ID center positive barrel receptacle e Tensility International Corp 10 00240 To convert 5 5mm OD 2 1mm ID cen
53. 7 The T7 supports up to 4 high speed rising edge counters that use hardware to achieve high count rates These counters are shared with other resources as follows CounterA CounterB CounterC CounterD DIO16 CIOO Used by EF Clock0 amp Clock1 DIO17 C101 Used by EF Clock0 amp Clock2 DIO18 ClO2 Always available DIO19 CIO3 Used by stream mode Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 7 DIO _EF_OPTIONS Not used DIO _EF_CONFIG_A Not used DIO _EF_CONFIG_B Not used DIO _EF_CONFIG _B Not used 48 DIO _EF_ CONFIG _B Not used Update No update operations can be performed with High Speed Counter Read DIO _EF_READ_A Returns the current count which is incremented on each rising edge Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer READ registers A B A_AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_ 16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A AND_RESET Reads the current count then clears the counter Note that there is a brief period of time between reading and clearing during which edges can be missed During normal operation this time period is 10 30us If missed edges at this point are not acceptable then do not use reset but rather just note the virtual reset
54. ATE Read or write the state of all digital I O in a single binary encoded value Does not configure direction A read of an output returns the current logic level on the terminal not necessarily the output state written Writes only apply to bits with mask set DIO_DIRECTION Read or write the direction of all digital I O in a single binary encoded value 0 Input and 1 Output Writes only apply to bits with mask set DIO_INHIBIT A single binary encoded value where each bit determines whether _STATE or DIRECTION writes affect that bit of digital O O Default Affected 1 Ignored document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false Electrical Overview All digital V O on the T7 have 3 possible states input output high or output low Each bit of VO can be configured individually When configured as an input a bit has a 100 kQ pull up resistor to 3 3 volts all digital O are at least 5 volt tolerant When configured as output high a bit is connected to the internal 3 3 volt supply through a series resistor When configured as output low a bit is connected to GND through a series resistor See AppendixA for more details By defa
55. DACO update on watchdog timeout WATCHDOG_DACO_DEFAULT The voltage of DACO after a Watchdog timeout WATCHDOG_DAC1_ENABLE_DEFAULT Timeout action Set to 1 to enable DAC1 update on watchdog timeout WATCHDOG_DAC1_DEFAULT The voltage of DAC1 after a Watchdog timeout Example The most common way to use Watchdog is to write WATCHDOG_ENABLE_DEFAULT 0 WATCHDOG_TIMEOUT_S_DEFAULT 60 WATCHDOG_RESET_ENABLE_DEFAULT 1 WATCHDOG_ENABLE_DEFAULT 1 If the device does not receive any communication for 60 seconds the watchdog will cause the device to reset So if nothing is talking to the device it will reset every 60 seconds In conjunction you would often use the IO Config system to configure the power up defaults as desired 24 0 IO Config DEFAULT _DEFAULT Any register with DEFAULT at the end is non volatile Whatever value you write to a _DEFAULT register will be retained through a reboot or power cycle IO CONFIG IO Config is a system that concerns the configuration of many registers mostly related to I O on the device This system includes all writable registers for AIN DAC and DIO among others IO Config does not include registers that have a_ DEFAULT version which is ETHERNET WIFI and WATCHDOG among others e Default Values at reboot power up e Current Current values e Factory Factory values IlO Config Registers Name Start Address Type Access Default 1IO_CONFIG_SET_DEFAULT_TO_CURRENT 49002 UINT32 WwW 1IO_CON
56. DAQcount 1 end if LJ CheckInterval 1 then file access interval complete appendToFile data save the data toa file DAQcount 0 end end 84 22 0 OEM Versions For pricing ordering go to the main T7 Product Page The OEM version of the T7 and T7 Pro are shown below The enclosure and most connectors are not installed on the OEM version which allows customers to choose custom connectors The following list describes parts that we know to be compatible with the T7 OEM hole patterns Simply select a connector from each category and we can order the parts and construct a custom OEM Custom OEM boards carry additional cost but they are often necessary for specialized enclosures and seamless integration with other products Of course there are many other connector options available we can just as easily order install something not mentioned below Please don t hesitate to contact us The PCB Dimensions can be found in the Enclosure and PCB Drawings section Note Proper ESD precautions should be taken when handling the PCB directly Many of the parts are ESD resistant but depending on the size of the shock or location the board might be damaged USB The USB connector is not installed on the T7 OEM Reference the T7 PCB dimensions for mechanical mating details Many through hole Type B USB connectors are compatible On Shore Technology Inc USB B1HSW6 FCI61729 0010BLF and TE Connectivity 292304 2 are all good options
57. ET_IP_DEFAULT 192 168 1 207 you actually write read the 32 bit numeric equivalent not an IP string then that value will be retained through reboots and is the default IP address If DHCP is disabled this will be the static IP of the device and what you get if you read ETHERNET_IP If DHCP is enabled then a read of ETHERNET_IP will return the IP set by the DHCP server Ethernet Config Registers Name Start Address Type Access Default ETHERNET_IP_DEFAULT 49150 UINT32 R W ETHERNET _SUBNET_DEFAULT 49152 UINT32 R W ETHERNET_GATEWAY_DEFAULT 49154 UINT32 R W ETHERNET _DNS_ DEFAULT 49156 UINT32 R W ETHERNET_ALTDNS_ DEFAULT 49158 UINT32 R W ETHERNET_DHCP_ENABLE_ DEFAULT 49160 UINT16 R W ETHERNET_IP_DEFAULT The IP address of wired Ethernet after a power cycle to the device ETHERNET_SUBNET_DEFAULT The subnet of wired Ethernet after a power cycle to the device 19 ETHERNET_GATEWAY_DEFAULT The gateway of wired Ethernet after a power cycle to the device ETHERNET_DNS_DEFAULT The DNS of wired Ethernet after a power cycle to the device ETHERNET_ALTDNS_DEFAULT The Alt DNS of wired Ethernet after a power cycle to the device ETHERNET_DHCP_ENABLE_DEFAULT The Enabled Disabled state of Ethernet DHCP after a power cycle to the device Ethernet Status Registers Name Start Address Type Access Default ETHERNET_IP 49100 UINT32 R ETHERNET_SUBNET 49102 UINT32 R ETHERNET_GATEWAY 49104 UINT32 R ETHERNET_DNS 49106 UINT32 R ETHERNET_ALTD
58. EX Awrite to this global parameter affects all AIN Aread will return the correct setting if all channels are set the same but otherwise will return OXxFFFF AIN_ALL SETTLING_US Awrite to this global parameter affects all AIN Aread will return the correct setting if all channels are set the same but otherwise will return 9999 document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false Some Examples Analog Input Example To read a voltage connected to AIN2 perform a read of AIN2 or 4 and the result would be in the form of a floating point number like 8 82332V Range Example It is known that the voltage source connected to AIN1 will be 0 to 0 7V so write 1 0 or anything gt 0 1 and lt 1 0 to AIN1_RANGE 40002 and the device will use the 1V range Differential Analog Input Example To do a differential reading on AIN2 you need to set AIN3 as its negative channel so that the measurement is AIN2 AIN3 rather then the default AIN2 GND single ended Write a value of 3 to AIN2_NEGATIVE_CH 41002 To set it back to single ended write a value of 199 Resolution Index Example Change the AIN1 resolution index to 5 by writing a value of
59. FIG_SET_DEFAULT_TO_FACTORY 49004 UINT32 WwW 1O_CONFIG_SET_CURRENT_TO_FACTORY 61990 UINT16 WwW 1O_CONFIG_SET_CURRENT_TO_ DEFAULT 61991 UINT16 WwW 1O_CONFIG_SET_DEFAULT_TO_CURRENT Write a 1 to cause new default reboot power up values to be saved to flash Current values are retrieved and saved as the new defaults 1O_CONFIG_SET_DEFAULT_TO_FACTORY Write a 1 to cause new default reboot power up values to be saved to flash Factory values are retrieved and saved as the new defaults 89 1O_CONFIG_SET_CURRENT_TO_FACTORY Write a 1 to set current values to factory configuration The factory values are retrieved from flash and written to the current configuration registers 1O_CONFIG_SET_CURRENT_TO_DEFAULT Write a 1 to set current values to default configuration The default values are retrieved from flash and written to the current configuration registers thus this behaves similar to reboot power up Example Use normal current configuration registers to write some values and then save those as defaults so they are in effect at power up AIN_ALL_RANGE 0 1 Set current range of all AIN to 0 1V AIN_ALL_RESOLUTION_INDEX 12 Set current resolution index of all AIN to 12 IO_CONFIG_SET_DEFAULT_TO_CURRENT 1_ Set power up defaults to current values 25 0 Scripting Scripting is relatively new Nov 2014 please update your firmware to at least 1 0134 Additions Changes as of firmware v1 0134 e In firmware v1 0134 and newer sy
60. FOEM from ATP Electronics Inc File and directory names are limited to ASCII characters only Requires firmware 1 0134 or greater One way to download files from the SD card is to remove it from the device We also have a beta program for downloading files from the SD card Note that the beta program is subject to changes and will not work with firmware older than 1 0150 Using the beta file downloader program linked above file transfer speeds are 41kB s via USB and about 80kB s via Ethernet So a 2 5MB file will take 1 minute to download via USB and 30s via Ethernet Get the name of the current working directory CWD 1 Write a value of 1 to FILE_lIO_DIR_CURRENT The error returned indicates whether there is a directory loaded as current No error 0 indicates a valid directory 2 Read FILE_IO NAME_READ_LEN 3 Read an array of size FILE_IO NAME _READ_LEN from FILE_IO_NAME_READ 4 Resultant string will be something like for the root directory or DIR1 DIR2 for a directory Get list of items in the CWD 1 Write a value of 1 to FILE_IO_DIR_FIRST The error returned indicates whether anything was found No error 0 indicates that something was found FILE_lIO_NOT_FOUND 2960 indicates that nothing was found 2 Read FILE_IO NAME _READ_LEN FILE_IO_ATTRIBUTES and FILE_lIO_SIZE Store the attributes and size associated with each file 82 3 Read an array from FILE_IO_NAME_READ of size FILE_IO NAME_READ_LEN This is the name
61. F_READ_ Write FIO_STATE 2 64512 then should read DIO2_EF_READ_ Write FIO_STATE 0 64512 then should read DIO2_EF_READ_ Write FIO_STATE 1 64512 then should read DIO2_EF_READ_ Write FIO_STATE 3 64512 then should read DIO2_EF_READ_ Write FIO_STATE 2 64512 then should read DIO2_EF_READ_ Spe See ee UNN NOORWNAO 1 Edge Rate Limits Keep in mind that the T7 does 4x quadrature counting so for example a 100 pulses revolution encoder will generate 400 edges revolution This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge This makes it substantially slower than other DIO EF that are purely hardware based To avoid missed edges the aggregate limit for edges seen by all interrupt based DIO EF is 70k edges second If stream mode is active the limit is reduced to 20k edges second Excessive processor loading e g a busy Lua script can also reduce these limits The more proper way to think of the edge limit and understand error that could be introduced when using multiple interrupt based DIO EF is to consider that the interrupt that processes an edge can take up to 14 us to complete When a particular channel sees an applicable edge an IF interrupt flag is set for that channel that tells the processor it needs to run an ISR interrupt service routine for that channel Once an ISR is started it runs to completion and no other ISR can r
62. LabJack Published on LabJack http abjack com Home gt Printer friendly PDF gt Printer friendly PDF T7 Datasheet High performance multifunction DAQ with USB Ethernet and WiFi This datasheet covers all T7 variants T7 T7 OEM T7 PRO and T7 PRO OEM Most information in this datasheet applies to all T7 variants Information about WiFi and the high resolution ADC ResolutionIndex 9 12 only applies to the Pro variants There is an OEM section with information specific to the build of OEM versions Searching The Datasheet To search this datasheet you can just use the search box you find on every page and to further refine your results include t7 or t7 datasheet in your search term To specifically restrict your search to just this datasheet include site labjack com support datasheets t7 in your search term Navigating the Datasheet using the Table of Contents An efficient way to navigate this online datasheet is to browse the table of contents to the left Rather than clicking on all the links to browse you can click on the small black triangles to expand without reloading the whole page Offline Datasheet If you are looking at a PDF hardcopy or other downloaded offline version of this datasheet realize that it is possibly out of date as the original is an online document Also this datasheet is designed as online documentation so the formatting of an offline version is often less than ideal To create an offl
63. NS 49108 UINT32 R ETHERNET_DHCP_ENABLE 49110 UINT16 R ETHERNET_IP Read the current IP address of wired Ethernet ETHERNET_SUBNET Read the current subnet of wired Ethernet ETHERNET_GATEWAY Read the current gateway of wired Ethernet ETHERNET_DNS Read the current DNS of wired Ethernet ETHERNET_ALTDNS Read the current Alt DNS of wired Ethernet ETHERNET_DHCP_ENABLE Read the current Enabled Disabled state of Ethernet DHCP Some Examples Read IP Example To read the wired IP Address of a device perform a modbus read of address 49100 The value will be returned as an unsigned 32 bit number such as 3232235691 Change this number to an IP address by converting each binary group to an octet and adding decimal points as necessary The result in this case would be 192 168 0 171 Change IP Example To change the Ethernet IP Address of a device perform a modbus write to address 49150 The value must be passed as an unsigned 32 bit number such as 3232235691 Change this IP address 192 168 0 171 by converting each octet to a binary group and sticking them together More Details Once default Ethernet configuration register s are changed the current settings will be updated on the next power cycle Alternatively toggle power to the Ethernet module by writing a 0 then a 1 to the POWER_ETHERNET address Ethernet Power Settings Name Start Address Type Access Default POWER_ETHERNET 48003 UINT16 R W POWER_ETHERNET_DEFAULT 480
64. O 0 22 EF_READ A 3000 UINT32 R DIO 0 22 EF_READ A AND RESET 3100 UINT32 R DIO 0 22 EF_READ B 3200 UINT32 R DIO 0 22 EF_ENABLE 1 enabled 0 disabled Must be disabled during configuration Names Addresses DIOO_EF ENABLE DIO1_EF ENABLE 44000 44002 44004 Show All DIO2 EF ENABLE Show All DIO 0 22 EF_INDEX An index to specify the feature you want Names Addresses DIO0 EF INDEX DIO1_EF_INDEX 44100 44102 44104 Show All DIO2 EF INDEX Show All DIO 0 22 EF_OPTIONS Function dependant on selected feature index Names Addresses DIOO_EF_ OPTIONS DIO1_EF OPTIONS 44200 44202 44204 Show All DIO2 EF OPTIONS Show All DIO 0 22 EF_VALUE_A 37 Function dependant on selected feature index Names Addresses DIOO EF VALUE A DIO1 EF VALUE A 44300 44302 44304 Show All DIO2 EF VALUE A Show All DIO 0 22 EF_VALUE_B Function dependant on selected feature index Names Addresses DIOO EF VALUE B DIOL EF VALUE B 44400 44402 44404 Show All DIO2 EF VALUE B Show All DIO 0 22 EF_VALUE_C Function dependant on selected feature index Names Addresses DIOO EF VALUE C DIOL EF VALUE C 44500 44502 44504 Show All DIO2 EF VALUE C Show All DIO 0 22 EF_VALUE_D Function dependant on selected feature index Names Addresses DIOO EF VALUE D DIO1 EF VALUE D 44600 44602 44604 Show All DIO2 EF VALUE D Show All DIO 0 22 EF_READ_A Reads an unsigned integer value The
65. O FIO1 Requires Clock Source Yes Index 3 positive edges or 4 negative edges Frequency In will measure the period frequency of a digital input signal by counting the number of clock source ticks between two edges rising to rising index 3 or falling to falling index 4 The number of ticks can be read from DIO _EF_READ_A Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR Aypically 80M Divisor Period s DIO _EF_READ_A Clock Frequency Frequency Hz Clock Frequency DIO _EF_READ_A Resolution s 1 Clock Frequency Max Period s DIO_EF_CLOCK _ROLL_VALUE Clock Frequency CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO_EF_CLOCK _DIVISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to a divisor of 1 For more details about Clock Frequency and DIO_EF_CLOCK _DIVISOR see the DIO EF Clock Source section Roll value for this feature would typically be left at the default of 0 which is the max value 232 for the 32 bit Clock0 but you might be using a lower roll value for another feature such as PWM output A couple typical scenarios with roll value 0 and using the 32 bit clock Clock0 Divisor 1 Resolution 12 5 nanoseconds MaxPeriod 53 7 seconds Divisor 256 Resolution 3 2 microseconds MaxPeriod 229 minutes Once this feature is enabled a new measurement happens
66. O _CONFIG_SET_CURRENT_TO_FACTORY will be done on timeout If bit 1 is set IO_CONFIG_SET_CURRENT_TO_DEFAULT will be done on timeout WATCHDOG_TIMEOUT_S_DEFAULT When the device receives any communication over USB Ethernet WiFi the watchdog timer is cleared If the watchdog timer is not cleared within the timeout period the enabled actions will be done WATCHDOG_STARTUP_DELAY_S_ DEFAULT This specifies the initial timeout period at device bootup This is used until the first time the watchdog is cleared or timeout after that the normal timeout is used WATCHDOG_STRICT_ENABLE_DEFAULT Set to 1 to enable strict mode WATCHDOG_STRICT_KEY_DEFAULT When set to strict mode this is the value that must be written to the clear register WATCHDOG_STRICT_CLEAR When running in strict mode writing the key to this register is the only way to clear the watchdog WATCHDOG_RESET_ENABLE_DEFAULT Timeout action Set to 1 to enable device reset on watchdog timeout WATCHDOG_DIO_ENABLE_DEFAULT Timeout action Set to 1 to enable DIO update on watchdog timeout WATCHDOG_DIO_STATE_DEFAULT The state high low of the digital I O after a Watchdog timeout See DIO_STATE WATCHDOG_DIO_DIRECTION_DEFAULT The direction input output of the digital O after a Watchdog timeout See DIO_DIRECTION WATCHDOG_DIO_INHIBIT_DEFAULT The inhibit mask of the digital I O after a Watchdog timeout See DIO_INHIBIT WATCHDOG_DACO_ENABLE_DEFAULT Timeout action Set to 1 to enable
67. R In CR mode the stream data is stored in the T7 s buffer and must be read out using a command CR mode is useful for when the connection is unreliable The T7 uses a feature called auto recovery If the buffer overflows the T7 will continue streaming but discard data until the buffer is emptied and then data will be stored in the buffer again The T7 keeps track of how many scans are discarded and reports that value Based on the number of scans discarded the LUM driver adds the proper number of dummy samples 9999 0 such that the correct timing is maintained Auto recover will only work if the first channel in the scan is an analog channel The scan rate is generated from the internal crystal oscillator Alternatively the scan rate can be a division of an external clock provided on Clos The timing between items in the scan list is controlled by several factors Timing pulses are generated on SPC so that the timing can be measured Pulses on SPC are as follows Falling edge at the start of a scan Rising edge at the start of a sample Falling edge at the end of a sample Rising edge at the end of a scan Registers that can be streamed are marked streamable true in Ijm_constants json and include AIN e FIO STATE EIO_STATE CIO_STATE MIO_ STATE FIO_EIO_STATE EIO_CIO_STATE DIO 0 22 EF_READ_A DIO 0 22 EF_READ_A_AND_RESET DIO 0 22 EF_READ_B CORE_TIMER SYSTEM_TIMER_20HZ STREAM_DATA_CAPTURE_16 Stream data is transfer
68. RTD PT100 41 RTD PT500 42 RTD PT1000 Analog Extended Features Name Start Address Type Access Default AIN 0 13 EF READ _A 7000 FLOAT32 R 0 AIN 0 13 EF READ B 7300 FLOAT32 R W 0 AIN 0 13 EF READ _C 7600 FLOAT32 R W 0 AIN 0 13 EF READ _D 7900 FLOAT32 R 0 AIN 0 13 EF_INDEX 9000 UINT32 R W 0 AIN_ALL_EF_INDEX 43906 UINT32 R W 0 AIN 0 13 EF _CONFIG_A 9300 UINT32 R W 0 AIN 0 13 EF _CONFIG_B 9600 UINT32 R W 0 AIN 0 13 EF_CONFIG_C 9900 UINT32 R W 0 AIN 0 13 EF_CONFIG_D 10200 FLOAT32 R W 0 AIN 0 13 EF _CONFIG_E 10500 FLOAT32 R W 0 AIN 0 13 EF _CONFIG_F 10800 FLOAT32 R W 0 AIN 0 13 EF_CONFIG_G 11100 FLOAT32 R W 0 AIN 0 13 _EF_READ A Names Addresses AINO EF READ A AIN1 EF READ A 7000 7002 7004 Show All AIN2 EF READ A Show All AIN 0 13 _EF_READ B Names Addresses AINO EF READ B AIN1 EF READ B 7300 7302 7304 Show All AIN2 EF READ B Show All AIN 0 13 _EF_READ_C Names Addresses AINO EF READ C AIN1 EF READ C 7600 7602 7604 Show All AIN2 EF READ C Show All AIN 0 13 _EF_READ_D Names Addresses AINO EF READ D AIN1 EF READ D 7900 7902 7904 Show All AIN2 EF READ D Show All AIN 0 13 _EF_INDEX Specify the desired extended feature for this analog input with the index value List of index values 0 None disabled 1 Slope Offset 11 FlexRMS 20 Thermocouple type E 21 Thermocouple type J 22 Thermocouple type K 23 Thermocouple type R 24 Thermocouple type T 40 RTD mode
69. S WIFI Pro only ETHERNET USB TYPE B _ STATUS LED GREEN S N COMM LED YELLOW PCB MOUNTING HOLE DIMENSIONS DIMENSIONS IN INCHES IPOOO OOOO ODO0 0000 6000 Sood 5 85 2 PLES PCB AND CONNECTOR FOOTPRINT DIMENSIONS IN INCHES 111 LabJack 17 Enclosure 6 2 2012 Note Dimensions in parentheses ore reference only T7 ENCLOSURE BASE TT ENCLOSURE BASE DIN CLIP DETAILS DIN RAIL CUP MOUNTING HOLES T7 ENCLOSURE BASE SCREW MOUNT DETIALS 1 F EEI r X W i y L 0 14 PA F KK K Y W P y A 2 PN NE te 4 Dyes to ae Vv I ww DETAIL O A A YA lA pS lt G o P r N 44 i D y F 290 pa ey Y we Y ro y lt i gt Dy DETAIL E i oooo0ooo ococoogoocoocoo0oooo0ooooo goo oo Qoooooo0o p 00000000000 0000000 000000000000000000 gpoooo000 0Gooo0oo0oo0oo0oo0oo0o00o00000000 oo og og bd a ooo ee 99 goo ol oO Ta o olola o o oiio OOO iGoo0o1RD 000 File attachment T7 Enclosure DWG T7 Enclosure DXF T7 Enclosure IGS T7 PCB Hole Dimensions T7 PCB Connector Dimensions T7 Enclosure STEP T7 Pro Enclosure DWG T7 Pro Enclosure DXF T7 Pro Enclosure IGS T7 Pro Enclosure STEP T7 Mounting Hole Template ILI JL AY I BDI Appendix C Firmware Revision History The release T7 firmware is listed on the I7 firmware page You will need the Kipling software program to load the
70. UFFER_STATUS The free space in the buffer in data points gt Once the waveform data points are stored the next step is to configure the STREAM_OUT 0 3 LOOP_SIZE and STREAM_OUT 0 3 SET LOOP parameters to establish if when the waveform repeats or stops or if the waveform should be clipped relative Stream Out Waveform Periodicity Name Start Address Type Access Default STREAM_OUT 0 3 LOOP_SIZE 4060 UINT32 R W 0 STREAM_OUT 0 3 SET LOOP 4070 UINT32 Ww 0 STREAM _OUT 0 3 _LOOP_SIZE The number of value that will be repeated after reaching the end of supplied data Names Addresses STREAM OUTO LOOP SIZE 4060 4062 4064 Show All STREAM OUT1 LOOP SIZE STREAM OUT2_ LOOP SIZE Show All STREAM _OUT 0 3 _SET_LOOP Controls when new data and loop size are used 1 Use new data immediately 2 Wait for synch New data will not be used until a different Stream Out channel is set to Synch 3 Synch This Stream Out as well as any Stream Outs set to synch will start using new data immediately Names Addresses STREAM OUTO_ SET LOOP 4070 4072 4074 Show All STREAM OUT1_ SET LOOP STREAM OUT2 SET LOOP Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes sho
71. WiFi Use WIFI_APPLY_SETTINGS WIFI_GATEWAY_DEFAULT The new gateway of WiFi Use WIFIAPPLY_SETTINGS WIFI_DHCP_ENABLE_DEFAULT The new Enabled Disabled state of WiFi DHCP Use WIFI_APPLY_SETTINGS WIFI_SSID_DEFAULT The new SSID network name of WiFi Use WIFILAPPLY_SETTINGS WIFI_PASSWORD_DEFAULT Write the password for the WiFi network then use WIFI_APPLY_SETTINGS WIFI_APPLY_SETTINGS Apply all new WiFi settings IP Subnet Gateway DHCP SSID Password 1 Apply WiFi Status Registers Name Start Address Type Access Default WIFI_IP 49200 UINT32 R WIFI _ SUBNET 49202 UINT32 R WIFI _ GATEWAY 49204 UINT32 R WIFI _DHCP_ENABLE 49210 UINT16 R WIFI_SSID 49300 STRING R WIFI_STATUS 49450 UINT32 R WIFI_RSSI 49452 FLOAT32 R WIFI_IP 22 Read the current IP address of WiFi WIFI_SUBNET Read the current subnet of WiFi WIFI_GATEWAY Read the current gateway of WiFi WIFI_DHCP_ENABLE Read the current Enabled Disabled state of WiFi DHCP WIFI_SSID Read the current SSID network name of WiFi WIFI_STATUS Status Codes ASSOCIATED 2900 ASSOCIATING 2901 ASSOCIATION_FAILED 2902 UNRPOWERED 2903 BOOTING 2904 START_FAILED 2905 APPLYING_SETTINGS 2906 DHCP_STARTED 2907 OTHER 2909 WIFI_RSSI WiFi RSSI signal strength Typical values are 40 for very good and 75 for very weak The T7 microcontroller only gets a new RSSI value from the WiFi module when WiFi communication occurs WiFi Power Registers
72. X ASYNCH_NUM_DATA _BITS The number of data bits per frame 0 8 0 8 ASYNCH_RX_BUFFER_SIZE_BYTES Number of bytes to use for the receiving buffer Max is 2048 0 200 ASYNCH_NUM_BYTES_RX The number of data bytes that have been received ASYNCH_NUM_BYTES_TX The number of bytes to be transmitted after writing to GO Maxis 256 ASYNCH_TX_GO Write a 1 to this register to initiate a transmission ASYNCH_NUM_STOP_BITS The number of stop bits 1 or 2 0 1 ASYNCH_PARITY Parity setting O none 1 odd 2 even ASYNCH_NUM_PARITY_ERRORS The number of parity errors that have been detected Cleared when UART is enabled Can also be cleared by writing 0 ASYNCH_DATA_TX Write data to be transmitted here ASYNCH_DATA_RX Read received data from here 14 0 AIN Analog Inputs 14 Voltage Ranges 10V 1V 0 1V and 0 01V T7 Max Resolution 16 bit T7 Pro Max Resolution 24 bit See the Noise amp Resolution Appendix for resolution details For information regarding typical analog input connections please see the Analog Signals App Note Analog Input Registers Name Start Address Type Access Default AIN 0 13 0 FLOAT32 R AIN 0 13 _ RANGE 40000 FLOAT32 R W 0 AIN 0 13 _NEGATIVE_CH 41000 UINT16 R W 199 AIN 0 13 _RESOLUTION_INDEX 41500 UINT16 R W 0 AIN 0 13 _ SETTLING_US 42000 FLOAT32 R W 0 AIN_ALL_RANGE 43900 FLOAT32 R W 0 67 AIN_ALL_NEGATIVE_CH 43902 UINT16 R W 199 AIN_ALL_RESOLUTION_INDEX 4390
73. _EF_CONFIG _B Not used Update No update operations can be performed on Interrupt Counter Read DIO _EF_READ_A Returns the current Count Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A AND_RESET Reads the current count then clears the counter Note that there is a brief period of time between reading and clearing during which edges can be missed During normal operation this time period is 10 30us If missed edges at this point can not be tollerated then reset should not be used Example Enable a counter on FIOO DIOO_EF_ENABLE 0 DIOO_EF_INDEX 8 DIOO_EF_ENABLE 1 Results can be read from the READ registers defined above Frequency Measurement Counters are often used to measure frequency by taking change in count over change in time Frequency CurrentCount PreviousCount CurrentTimestamp Previous Timestamp Typically the timestamps are from the host clock software but for more accurate timestamps read the CORE_TIMER register address 61520 UINT32 in the same modbus packet as the counter reads CORE_TIMER is a 32 bit system timer running at 1 2 the core speed and thus is normally 80M 2
74. a green FIO1 Clock white FIO2 Power red Since power is provided by FIO2 and FIO lines can only power 4 El 1050 probes that is the limitation on number of probes using the default config We can now connect the enable line from each probe to any DIO we want Lets use FIO3 Enable ProbeA brown EIO0 DIO8 Enable ProbeB brown ElO1 DIO9_ Enable ProbeC brown ElO2 DIO010 Enable ProbeD brown You can now read from SBUS _TEMP and SBUS _RH for each probe without writing any config values In LJLogM for example just put the desired register name in any row Aread from SBUS3_TEMP will return the temperature from ProbeA A read from SBUS9_RH will return the humidity from ProbeC Note that when using multiple probes this way you might need to read one value from each probe before they will work By default digital O are set to input which has a 100k pull up so all 4 probes in this example will be enabled at the same time which will likely result in a read error At the end of a read the enable line is set to output low so once you do an initial read from each they will all be disabled and on further reads only one will be enabled at a time El 1050 probes using enable with custom configuration Say you connect 2 probes as follows GND Ground black ElOO DIO8 Data green ElO1 DIO9 Clock white ElO2 DIO10 Power red EI03 DIO11 Enable ProbeA brown El04 DI012 Enable ProbeB brown Write the following registers to configure a
75. ad via command response Names Addresses STREAM OUTO STREAM OUT1 STREAM OUT2 4800 4801 4802 Show All Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false gt Configuration Configuration will set the buffer size and target The target specifies which physical I O to use Data in the buffer will be output onto the target O as a generated waveform Configuration can be done before or after stream has started Stream Out Configuration Name Start Address Type Access Default STREAM_OUT 0 3 _ TARGET 4040 UINT32 R W 0 STREAM_OUT 0 3 BUFFER_SIZE 4050 UINT32 R W 0 STREAM_OUT 0 3 _ ENABLE 4090 UINT32 R W 0 STREAM_OUT 0 3 _ TARGET Channel that data will be written to Names Addresses STREAM OUTO TARGET STREAM OUT1_ TARGET 4040 4042 4044 Show All STREAM OUT2 TARGET Show All STREAM_OUT 0 3 _BUFFER_SIZE Size of the buffer in bytes Should be at least twice the size of updates that will be written Maxis 16384 Names Addresses STREAM OUTO BUFFER SIZE 4050 4052 4054 Show All STREAM OUT1_BUFFER_ SIZE STREAM OUT2 BUFFER SIZE Show All STREAM _OUT 0 3 _ ENABLE Write 1 to enable 0 to disable
76. ads to Figure 12 4 which shows R1 and R2 measured differentially and R3 measured single ended Specifications The current sources can drive about 3 volts max thus limiting the maximum load resistance to about 300 kQ 10UA and 15 KQ 200UA Keep in mind that high source resistance could cause settling issues for analog inputs The current sources have good accuracy and tempco but for improvement a fixed resistor can be used as one of the resistors in the figures above The Y1453 100 and Y1453 1 0K from Digikey have excellent accuracy and very low tempco By measuring the voltage across one of these you can calculate the actual current at any time The following charts show the typical tempco of the current sources over temperature The 10UA current source has a very low tempco across temperature The 200 UA current source has a good tempco from about 0 50 degrees C and outside of that range the effect of tempco will be more noticeable 200UA Typical Temperature Coefficient 20 40 60 80 PPM degC 100 120 140 60 40 20 0 20 40 60 80 Temperature deg C 31 10UA Typical Temperature Coefficient 2 3 a a 0 20 Temperature deg C Example PT100 or PT1000 RTD Assume that R1 in Figure 12 1 is a PT100 RTD A PT100 RTD is 100 ohms at 0 degC The response of an RTD is nonlinear but the linear slope 0 384 ohms degC works well from about 40 to 150 degC That
77. agree to fully indemnify LabJack Corporation for any damages resulting from such applications LabJack assumes no liability for applications assistance or customer product design Customers are responsible for their applications using LabJack products To minimize the risks associated with customer applications customers should provide adequate design and operating safeguards Reproduction of products or written or electronic information from LabJack Corporation is prohibited without permission Reproduction of any of these with alteration is an unfair and deceptive business practice Conformity Information FCC CE RoHS See the Conformity Page and the text below FCC PART 15 STATEMENTS This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense The end user of this product should be aware that any changes or modifications made to this equipment without th
78. akes into account the number of periods to be averaged and the core clock speed DIO _EF READ _B F Returns the average frequency in Hz Takes into account the number of periods to be averaged and the core clock speed Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A AND_RESET Returns the same data as DIO _EF_READ_A and then clears the result so that zero is returned by subsequent reads until another full period is measured DIO _EF_READ_A_AND_RESET_F Returns the same data as DIO _EF_READ_A F and then clears the result so that zero is returned by subsequent reads until another full period is measured Example Edge Rate Limits This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge This makes it substantially slower than other DIO EF that are purely hardware based To avoid missed edges the aggregate 55 limit for edges seen by all interrupt based DIO EF is 70k edges second If stream mode is active the limit is reduced to 20k edges second Excessive processor loading e g a busy Lua script can also reduce these limits The more prop
79. alue of O corresponds to Resolution_Index 8 on a T7 and Resolution_Index 9 on a T7 Pro For stream readings the default of 0 corresponds to Resolution_Index 1 For typical noise levels and sample times at different combinations of resolution index and gain see Appendix A 3 1 Noise and Resolution For general discussion on the meaning of resolution see the Noise and Resolution App Note The AIN 0 13 _ SETTLING_US parameter is the time from a step change in the input signal to when the signal is sampled by the ADC measured in microseconds A step change in this case is caused when the internal multiplexers change from one channel to another In general more settling time is required as gain and resolution are increased The default auto settling time ensures that the device meets specifications at any gain and resolution for source impedance up to at least 1000 ohms This parameter applies to command response mode and AIN EF Stream mode has its own settling parameter The timings in AppendixA are measured with auto settling 14 1 AIN Extended Features Analog extended features AIN EF are used for advanced operations involving analog inputs Possible features e Linear Scaling Apply a simple slope and offset to convert a voltage into something else like pressure force or temperature e FlexRMS Calculate RMS voltage Flexible sample rate number of samples and hysteresis parameters Also returns frequency period e Thermocouples P
80. alues Modbus read array Reads nValues of type dataType from Address and returns the results in a Lua table The table is indexed from 1 to nValues LJ ledtog Toggles status LED This is just for testing and will be removed LJ Tick Ticks LJ Tick Reads the core timer 1 2 core freq 92 LJ IntervalConfig amp LJ Checkinterval IntervalConfig and Checkinterval work together to make an easy to use timing function Set the desired interval time with IntervalConfig then use Checkinterval to watch for timeouts The interval period will have some jitter but no overall error Jitter is typically 30 us but can be greater depending on processor loading A small amount of error is induced when the processor s core speed is changed Up to 8 different intervals can be active at a time LJ IntervalC onfig handle time_ms handle 0 7 time_ms Number of milliseconds per interval timeout LJ Checkinterval handle handle 0 7 Returns 1 if the interval has expired 0 if not Example LJ IntervalConfig 0 1000 while true do if LJ CheckInterval 0 then Code to run once per second here end end LJ setLuaThrottle LJ setLuaThrottle newThrottle Set the throttle setting This controls Lua s processor priority Value is number of Lua instruction to execute before releasing control to the normal polling loop After the loop completes Lua will be given processor time again LJ getLuaThrottle ThrottleSetting LU getLuaThrott
81. ame value Aread will return the correct setting if all channels are set the same but otherwise will return OxFF SBUS_ALL_POWER_DIONUM Sets the power line This DIO is set to output high upon any read of SBUS _TEMP or SBUS _RH Default FIO2 An FIO line can power up to 4 sensors while an EIO CIO MIO line or DAC line can power up to 20 sensors Set to 9999 to disable To use multiple power lines use a DAC line for power or otherwise control power yourself set this to 9999 and then control power using writes to normal registers such as FIO5 ElOO or DACO SBUS_ALL_CLOCK_SPEED Sets the clock speed Clock is software generated so the frequency is not fixed Larger values are faster Zero is the fastest option and is equivalent to 65536 A value of zero is 200 kHz a value of 65000 is 9 1 kHz document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false Examples EI 1050 probes using default configuration 61 The El 1050 has an enable line that allows multiple probes to use the same pair of data clock lines In this example we connect the 4 basic wires from each probe to the lines specified by the default config GND Ground black FIOO Dat
82. aps to AIN6 and AIN110 maps to AIN7 For more information on differential extended channels see the Mux80 Datasheet Note that when using the Mux80 board the T7 s MIO 0 2 lines are consumed for multiplexer signaling Mux80 Extended Channels Name Start Address Type Access Default AIN 48 127 96 FLOAT32 R AIN 48 127 Returns the voltage of the specified analog input Names Addresses AIN48 AIN49 AIN50 Show All 96 98 100 Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false 15 0 DAC Output OV to 5V Resolution 12 bit Source Impedance 50 ohms Max Output Current 20mA At max current the output voltage will be lower than configured see Appendix A 4 for details DAC Registers Name Start Address Type Access Default DAC 0 1 1000 FLOAT32 R W DAC 0 1 Pass a voltage for the specified analog output Names Addresses 75 DACO DAC1 1000 1002 Overview There are two DACs digital to analog converters or analog outputs on the T7 Each DAC can be set to a voltage between about 0 01 and 5 volts with 12 bits of resolution For electrical specifications See Appendix A 4 Although the
83. ard connects to the DB15 connector on the LabJack using the 12 EIO CIO lines to control up to 12 VO modules Output or input types of digital VO modules can be used The RB12 is designed to accept G4 series digital JO modules from Opto22 and compatible modules from other manufacturers such as the G5 series from Grayhill Output modules are available with voltage ratings up to 200 VDC or 280 VAC and current ratings up to 3 5 amps OEM The OEM T7 has a separate header location to bring out the same connections as the DB15 connector This OEM header location is labeled J2 The J2 holes are always present but are obstructed when the DB15 connector is installed Find the pinout and other OEM information for J2 in OEM Versions 18 0 Internal Temp Sensor 78 Sensor Range 50 C to 150 C T7 Operating Range 40 C to 85 C Accuracy 20 C to 40 C 1 5 C Accuracy 20 C to 50 C 2 0 C Accuracy 45 C to 85 C 3 5 C Accuracy of measuring device temperature which is typically warmer than ambient air temperature Includes error from LM94021 specifications and error due to linear equation fit The T7 has an LM94021 temperature sensor connected to internal analog input channel 14 AIN14 The sensor is physically located on the bottom of the PCB between the AINO 1 and AIN2 3 screw terminals A reading from AIN14 returns volts which can be converted to device temperature using the formula volts 92 6 467 6 Alternativ
84. at all channels in the scanlist will be read SampleRate NumChannels ScanRate Has no effect when using and external clock STREAM_NUM_ADDRESSES The number of entries in the scanlist STREAM_SAMPLES_PER_PACKET Specifies the number of data points to be sent in the data packet Only applies to spontaneous mode STREAM_SETTLING_US Time in microseconds to allow signals to settle after switching the mux Default 0 equates to 10 us if sample rate lt 80k and 6 us for higher sample rates Max is 5000 STREAM_RESOLUTION_INDEX Index specifying the resolution of the data High settings will have lower max speeds STREAM_BUFFER_SIZE_BYTES Size of the stream data buffer in bytes A value of 0 equates to the default value Must be a power of 2 as it takes 2 bytes to hold 1 sample Changes while stream is running do not affect the currently running stream STREAM_AUTO_TARGET Controls where data will be sent Value is a bitmask bit 0 1 Send to Ethernet 702 sockets bit 1 1 Send to USB bit 4 1 Command Response mode All other bits are reserved STREAM_NUM_SCANS The number of scans to run before automatically stopping stream burst 0 run continuously Max number of samples is STREAM_BUFFER_SIZE_BYTES 2 Max number of scans is STREAM_BUFFER_SIZE_BYTES 2 STREAM_NUM_ADDRESSES STREAM_ENABLE Write 1 to start stream Write 0 to stop stream STREAM_SCANLIST_ADDRESS 0 127 A list of addresses to read each scan In the case of Stream Ou
85. ata points to be sent in the data packet Only applies to spontaneous mode STREAM_SETTLING_US Time in microseconds to allow signals to settle after switching the mux Default 0 equates to 10 us if sample rate lt 80k and 6 us for higher sample rates Max is 5000 STREAM_RESOLUTION_INDEX Index specifying the resolution of the data High settings will have lower max speeds STREAM_BUFFER_SIZE_BYTES Size of the stream data buffer in bytes Avalue of 0 equates to the default value Must be a power of 2 as it takes 2 bytes to hold 1 sample Changes while stream is running do not affect the currently running stream STREAM_CLOCK_SOURCE Controls which clock source will be used to run the main stream clock 0 Internal crystal 2 External clock Source T7 can accept an external clock on CIO3 All other values reserved STREAM_AUTO_TARGET Controls where data will be sent Value is a bitmask bit 0 1 Send to Ethernet 702 sockets bit 1 1 Send to USB bit 4 1 Command Response mode All other bits are reserved STREAM_NUM_SCANS The number of scans to run before automatically stopping stream burst 0 run continuously Max number of samples is STREAM_BUFFER_SIZE_BYTES 2 Max number of scans is STREAM_BUFFER_SIZE_BYTES 2 STREAM_NUM_ADDRESSES STREAM_EXTERNAL_CLOCK_DIVISOR The number of pulses per scan when using an external clock STREAM_ENABLE Write 1 to start stream Write 0 to stop stream STREAM_SCANLIST_ADDRESS 0 127
86. ature sequence For example configure quadrature on FlO2 3 as shown above and connect FIOO to FlO2 and FIO1 to FIO3 FIOO 1 Initialize FIOO to output high FIO1 1 Initialize FIO1 to output high DIO2_EF_ENABLE 0 Make sure DIO EF is disabled on FlO2 DIO3_EF_ENABLE 0 Make sure DIO EF is disabled on FIO3 DIO2_EF_INDEX 10 Set feature index for FIO2 to quadrature DIO3_EF_INDEX 10 Set feature index for FIO3 to quadrature DIO2_EF_ENABLE 1 Enable quadrature DIO EF on FIO2 for A phase DIO3_EF_ENABLE 1 Enable quadrature DIO EF on FIO3 for B phase Now we can simulate a quadrature signal by toggling FIOO and 1 in the proper sequence We will use the FIO_STATE register address 2500 which operates on all 8 FIO bits at once but we will set the inhibit bits for FIO2 FIO7 bits 10 15 so they are not affected To set bits 10 15 we can simply add 64512 to the desired FIO0 1 state value Write FIO_STATE 3 64512 then should read DIO2_EF_READ_A 0 Write FIO_STATE 1 64512 then should read DIO2_EF_READ_A 1 Write FIO_STATE 0 64512 then should read DIO2_EF_READ_A 0 Write FIO_STATE 2 64512 then should read DIO2_EF_READ_A 1 Write FIO_STATE 3 64512 then should read DIO2_EF_READ_A 2 Write FIO_STATE 2 64512 then should read DIO2_EF_READ_A Write FIO_STATE 0 64512 then should read DIO2_EF_READ_ Write FIO_STATE 1 64512 then should read DIO2_EF_READ_ Write FIO_STATE 3 64512 then should read DIO2_E
87. aximum voltage compared to ground to avoid damage to the device Protection level is the same whether the device is powered or not 4 The key specification here is the maximum source impedance As long as the source impedance is not over this value there will be no substantial errors due to impedance problems For source impedance greater than this value more settling time might be needed A 3 1 Noise And Resolution A Note About ADC Noise and Resolution Analog voltages measured by the T7 are converted to digital representation via the T7 s analog to digital converter ADC The ADC reports an analog voltage in terms of ADC counts where a single ADC count is the smallest change in voltage that will affect the reported ADC value A single ADC count is also known as the converter s LSB voltage The ADC s resolution defines the number of discrete voltages represented over a given input range For example a 16 bit ADC with a 10 input range can report 65536 discrete voltages 216 and has an LSB voltage of 0 305 mV 20V 218 The stated resolution for an ADC is a best case value assuming no channel noise In reality every ADC works in conjunction with external circuitry amplifiers filters ect which all posses some level of inherent noise The noise of supporting hardware in addition to noise of the ADC itself all contribute to the channel resolution In general the resolution for an ADC and supporting hardware will be less than what i
88. cal milliseconds per sample 99 Resolution Effective LSB AIN Sample Index Resolution Voltage Time bits uV ms sample Gain Range 1 410V 1 16 0 316 0 04 2 16 5 223 0 1 3 17 0 158 0 1 4 17 5 112 0 2 5 17 9 84 6 0 2 6 18 3 64 1 0 3 7 18 8 45 3 0 6 8 19 1 36 8 1 1 9 19 6 26 0 3 5 10 20 5 14 0 13 4 11 21 3 8 02 66 1 12 21 4 7 48 159 Gain Range 10 1V 1 15 4 47 9 0 3 2 16 0 31 6 0 3 3 16 5 22 3 0 6 4 16 9 16 9 0 7 5 17 4 12 0 1 2 6 17 9 8 46 2 3 7 18 3 6 41 2 6 8 18 7 4 86 3 1 9 19 5 2 79 3 5 10 20 5 1 40 13 5 11 21 4 0 748 66 3 12 21 5 0 698 159 Gain Range 100 0 1V 1 13 3 20 5 1 0 2 14 2 11 0 2 0 3 14 7 7 78 5 0 4 15 2 5 50 5 0 5 15 7 3 89 5 1 6 16 3 2 57 10 3 7 16 7 1 94 10 5 8 17 2 1 37 11 1 9 18 3 0 641 3 5 10 19 1 0 368 13 4 11 19 6 0 260 66 2 12 19 7 0 243 159 Gain Range 1000 0 01V 1 10 9 10 8 5 0 2 12 3 4 10 10 0 3 12 7 3 11 10 1 4 13 3 2 05 10 1 5 13 8 1 45 10 2 6 14 4 0 96 10 3 7 14 7 0 778 10 6 8 15 0 0 632 11 1 9 15 4 0 479 3 5 10 16 1 0 295 13 4 11 16 4 0 239 66 2 12 16 4 0 239 158 Streaming Data Rates The fastest data rates on the T7 occur when operating in stream mode Much of the command response overhead is eliminated in stream mode because the T7 is responsible for initiating IO operations Collected data is stored in the T7 s stream buffer it is retrieved by the host application The end result is a continuous data stream sampled at regular intervals collected with a mini
89. ces produce the reference frequencies used to generate output waveforms and measure input waveforms ClockSource settings control output frequency PWM resolution maximum measurable period and measurement resolution Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR Aypically 80M Divisor CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO EF CLOCK DIVISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to 38 a divisor of 1 There are 3 DIO EF clock sources available Each clock source has an associated bit size and several mutual exclusions Mutual exclusions exist because the clock sources share hardware with other features A ClockSource is created form a hardware counter CLOCK1 uses COUNTER_A CIOO and CLOCK2 uses COUNTER_B C101 The 32 bit clock source CLOCKO is created by combining the 2 16 bit clock sources CLOCK1 CLOCK2 The following list provides ClockSource bit sizes and mutual exclusions CLOCKO 32 bit Mutual Exclusions CLOCK1 CLOCK2 COUNTER_A CIO0 COUNTER_B CIO1 CLOCK1 16 bit Mutual Exclusions CLOCKO COUNTER_A CIO0 CLOCK2 16 bit Mutual Exclusions CLOCKO COUNTER_B C101 The clock source is not a DIO EF feature but the four basic operations of Configure Read Update and Reset still apply Configure There are four registers associated with the configuration of
90. ch is done as follows Wait for value gt averagethysteresis or value lt average hysteresis if gt find next 2 falling edge zero crossings Wait for value lt average 1st falling edge zero crossing Wait for value lt average hysteresis Wait for value gt averagethysteresis Wait for value lt average 73 2nd falling edge zero crossing if lt find next 2 rising edge zero crossings Wait for value gt average 1st rising edge zero crossing Wait for value gt averagethysteresis Wait for value lt average hysteresis Wait for value gt average 2nd rising edge zero crossing We can now note the period of the waveform as the time between the 2 falling or 2 rising zero crossings Finally we use the 1 cycle of data to calculate RMS amp peak to peak and the final value for average RMS is calculated as 2 Point 2 numPoints 0 5 and thus provides true RMS regardless of waveform shape Configuration Registers CONFIG_A NumScans default 200 max 16384 CONFIG_B Hysteresis default 100 16 bit counts CONFIG_D ScanRate default 6000 Result Registers READ_A RMS Voltage READ_B Peak to Peak Voltage READ_C DC Offset Voltage Average READ_D Period Seconds Example AIN _EF_INDEX 11 14 1 4 FlexRMS 14 2 Special Channels The T7 has special channels to allow for various analog input features All the analog inputs 0 13 can be used for single ended rea
91. ch more than USB or Ethernet With a solid connection most WiFi packets have an overhead of 3 8 ms but many will take longer For example a test was done in a typical office environment of 1000 iterations that produced an average time of 7 0 ms 92 of the packets took 3 8 ms 99 took lt 30 ms and 3 packets took 300 ms All WiFi tests were done with an RSSI between 40 very strong and 70 good An RSSI less than 75 generally reflects a weak connection and the number of packets that experiences retries goes up quickly An RSSI greater than 35 reflects a very strong connection typically within a few feet of the access point and also results in increasing numbers of retries due to saturation of the RF signal ADC Conversions Analog to digital conversions ADC will increase the command response time depending on the number of channels input gain and resolution index being used Table A1 3 lists the conversion times for the T7 at various gains and resolution index settings reading a single analog input channel The total command response time CRT when reading analog inputs is equal to the overhead time from tables A1 1 and A1 2 added to the conversion times from Table A1 3 per channel being read Please review tables A1 1 A1 3 carefully as the listed times will determine the maximum sampling rate achievable when reading analog inputs in command response mode CRT miliseconds overhead AINs AIN Sample Time Table A1 3 Typi
92. ckage 1 35MB 2014 10 02 17 27 Connect the T7 to the local computer via USB Proceed through any steps to add new hardware If using Windows open Kipling installed with package above Utility apps for other operating systems are still under development 5 Use the dashboard in Kipling to view analog inputs digital YO DAC outputs etc 6 Go to quickstart page to see more about Kipling and its use with the T7 AUN 3 0 Communication Modbus TCP is the protocol used by all connections on the T7 USB Ethernet WiFi All important values and data from the device can be read and or written by using the associated Modbus register s Thus the process for reading the serial number an analog input or a waveform is all functionally the same you simply provide a different address There are two main ways to communicate with a T7 using Modbus TCP Communication Options High level LJM library Among other useful features this cross platform library allows users to access registers by name such as AIN4 for analog input 4 Most people will use the LJM library since they re familiar with writing code and want to integrate a T7 into an existing software framework Conceptual workflow 1 Find example code wrappers for your desired programming language 2 Use the LJM_Open function to open a connection to the T7 3 Perform reads and writes to Modbus registers using LJM_eReadName or LJM_eWriteName 4 Use the Close f
93. clock sources DIO_EF_CLOCK _ENABLE 1 Enable 0 Disable Must be disabled to change the configuration DIO_EF_CLOCK _DWNISOR 1 2 4 8 16 32 64 or 256 Default value of 0 equates to a divisor of 1 DIO_EF_CLOCK _OPTIONS Reserved for future use Write 0 DIO_EF_CLOCK _ROLL_VALUE The ClockSource will count to VALUE 1 then roll to zero and repeat This is a 32 bit value 0 4294967295 if using a 32 bit clock and a 16 bit value 0 65535 if using a 16 bit clock O results in the max roll value possible A ClockSource can be enabled after DIO EF_INDEX has been configured This allows several DIO EFs to be started at the same time Read DIO_EF_CLOCK _COUNT Returns the current value of a clock source s counter This can useful for generating timestamps Update Asmooth update feature has been added in firmware 1 0035 Both the roll_value and the divisor can be written while a clock source is running As long as the clock source s period is greater than 50 us the clock will seamlessly switch to the new settings Reset At this time there are no reset operations available for the DIO EF clock sources Example Configure CLOCKO as a 10 MHz clock source with a roll value of 1000000 DIO_EF_CLOCKO_ENABLE 0 DIO_EF_CLOCKO_DIVISOR 8 DIO_EF_CLOCKO_ROLL_VALUE 1000000 DIO_EF_CLOCKO_ENABLE 1 With this clock configuration PWM output index 0 will have a frequency of 10 Hz A frequency input measurement index 3 4 will be able to cou
94. complished using the Modbus TCP protocol thus allowing direct communication with the T7 via low level TCP commands As an alternative the LJM library may be used as a higher level communications layer for added convenience and minimal additional overhead Tables A 1 1 and A 1 2 list expected communication overhead times associated with ModBus TCP and LJM Library communication options performing various tasks on the T7 Table A1 1 Typical communication overhead using direct Modbus TCP l USB High High USB Other Ethernet WiFi ms ms ms ms No I O Overhead 0 7 2 1 0 8 6 Read All DI l 0 7 2 1 0 8 6 Write All DO l 0 7 2 1 0 8 6 Writa Rath NACE N7 a4 Na R Table A1 2 Typical communication overhead using LJM library USB High High USB Other Ethernet WiFi ms ms ms ms No I O Overhead 1 7 2 2 1 7 7 Read All DI 1 7 2 2 1 7 7 Write All DO 1 7 2 2 1 7 7 Wirita Rath NACo 47 of ee 47 7 Testing Procedure and Definitions The times shown in table A 1 1 and A 1 2 were measured using a LabVIEW program running on Windows were all read and write operations are conducted with a single eNames call The eNames functions is used to minimize the number of Modbus packets sent from the host one packet per command response set The test program executes one of the listed tasks within a loop for a specified number of iterations over a 1 10 second period The overall execution time is divided by the total number of iterations provi
95. d consisting of the high time then the low time before loading the new value The next period will then have the new duty cycle This is true for all cases except zero When setting the duty cycle to zero the line will be set low regardless of the current position This means that a single high pulse with duration between zero and the previous high time can be output before the line goes low Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 0 DIO _EF_ OPTIONS Bits 0 2 specify which clock source to use 000 for ClockO 001 for Clock1 and 010 for Clock2 All other bits reserved and should be set to 0 DIO _EF_CONFIG_A When the specified clocks source s count matches this value the line will transition from high to low DIO _EF_CONFIG _B Not used DIO _EF_CONFIG_C Not used DIO _EF_CONFIG_D Not used Update The duty cycle can be updated at any time To update write the new value to DIO _EF_CONFIG_A The new value will not be used until the clock source rolls to zero This means that at the end of the current period the new value will be loaded resulting in a glitch free transition 40 Read No information is returned by PWM Out Reset Reset has no affect on this feature Example Generate a 10 kHz PWM starting at 25 DC First configure the clock source The higher the roll value the greater the duty cycle resolution will be For the highest resolution we want to maximize the roll value so use the smalle
96. d it in two separate packets using MB R Read a 32 bit register Value is expected to be changing and gt 24 bits use MB RA aU32 1 0x00 aU32 2 0x00 aU32 error MB RA 3000 0 2 DIOO_EF READ A Type is 0 instead of 1 DIOO_EF_READ A MSW aU32 1 DIO0_EF_READ A_LSW aU32 2 Value constant and gt 16 777 216 24 bits Read ETHERNET MAC address 60020 MAC_MSW MB R 60020 0 Read upper 16 bits Type is 0 instead of 1 MAC_LSW MB R 60021 0 Read lower 16 bits Value lt 16 777 216 24 bits Read AINO_EF_INDEX address 9000 AINO_index MB R 9000 1 Type can be 1 since the value will be smaller than 24 bits Write a 32 bit register Value might be changed or incremented by the T7 and gt 24 bits use MB WA aU32 1 OxFF2A aU32 2 OxFB5F error MB WA 44300 0 2 aU32 Write DIOO EF VALUE _A Type is 0 instead of 1 Value constant and gt 24 bits MB W 44300 0 OxFF2A Write upper 16 bits Type is 0 instead of 1 MB W 44301 0 OxFB5F Write lower 16 bits Value lt 16 777 216 24 bits Write DIOO_EF_ INDEX address 44100 MB W 44100 1 7 Type can be 1 since the value 7 is smaller than 24 bits Load Lua Script Manually To Device Kipling automatically handles loading the script files to the device when users press the Run button Kipling also automatically reads print statements and other output and displays them in the console However if users want to wr
97. d on every rising edge If you do another read before a new rising edge has occurred you will get the same values as before Many applications will want to use the read and reset option so that a value is only read once and extra reads will return 0 Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 5 DIO _EF_OPTIONS Bits 0 2 specify which clock source to use 000 for ClockO 001 for Clock1 and 010 for Clock2 All other bits reserved and should be set to 0 DIO _EF_CONFIG_A Bit 1 1 continuous 0 OneShot All other bits reserved DIO _EF_CONFIG_B Not used DIO _EF_CONFIG_C Not used DIO _EF_CONFIG_D Not used Update No update operations can be performed on Pulse Width In Read DIO _EF_READ_A Returns the measured high time in clock source ticks and saves the low time so that it can be read later If a full period has not yet been observed this value will be zero DIO _EF_READ_B Returns the measured low time in clock source ticks This is a capture register it is only updated when one of the READ_A registers is read DIO _EF_READ_A F Returns the measured high time in seconds and saves the low time so that it can be read later If a full period has not yet been observed this value will be zero DIO _EF READ _B F Returns the measured low time in seconds This is a capture register it is only updated when one of the READ_A registers is read Stream Read All operations discussed in this section are
98. de variety of mounting styles the simplest of which is the panel mount TE Connectivity 1546414 4 and Amphenol RJFEZ2203100BTX are both good options If selecting your own Ethernet interconnect insure that it is RJ45 straight through and without magnetics WiFi Antenna T7 Pro OEM ships with a simple 30mm U FL whip antenna such as the Anaren 66089 2406 See Antenna Details in the WiFi section of this datasheet for additional information JP1 JP6 Screw terminal Locations The screw terminals are not installed on the OEM T7 Customers will typically use the rectangular header locations J2 J3 instead of the screw terminals However if a different screw terminal style is required it is possible to buy an OEM T7 and order a custom variety The screw terminal holes are compatible with almost all 4 position 0 198 5 00mm pitch terminal blocks A Weidmuller 9993300000 works quite well and accepts 14 24 AWG wire P2 P3 DB D Sub Locations The DB15 and DB37 connectors are not installed on an OEM T7 Customers will typically use the rectangular header locations J2 J3 instead of the DB connectors However if a different DB mating style is required it is possible to buy an OEM T7 and order a custom variety The DB connectors are standard D Sub two row receptacles female sockets through hole 15 pin and 37 pin The following represent a few valid options FCI 10090099 S154VLF FCID15S33E4GVOOLF Sullins Connector Solution
99. ded Then the EF can be enabled The following seven registers are used for configuration DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX Index number specifying the Extended Feature DIO _EF_OPTIONS Bits 2 0 Specifies the clock source to use DIO _EF_VALUE_A Extended Feature specific value DIO _EF_VALUE_B Extended Feature specific value DIO _EF_VALUE_C Extended Feature specific value DIO _EF_VALUE_D Extended Feature specific value 36 Read Some Extended Features produce results or provide status information that can be read This information is usually a binary integer When possible the LabJack will convert the binary integer into a real world unit such as seconds When available converted values can be read from the registers designated with _F The following registers are used to read results from a DIO Extended Feature DIO _EF_READ_A Extended feature specific value Reading this value takes a snapshot of READ_B READ _B F DIO _EF_READ_B Extended feature specific value Reading this returns the snapshot acquired by READ_A DIO _EF_READ_A_F Returns READ_A converted to a real world value and takes a snapshot of READ_B READ_B F DIO _EF_READ_B_F Returns the READ_B snapshot converted to a real world value Update Some Extended Features can be updated while running Updating allows the Extended Feature to change its operation parameters without restarting Note that the ClockSource and Feature
100. ded value Does not configure direction A read of an output returns the current logic level on the terminal not necessarily the output state written The upper 8 bits of this value are inhibits CIO_STATE Read or write the state of the 4 bits of CIO in a single binary encoded value Does not configure direction Aread of an output returns the current logic level on the terminal not necessarily the output state written The upper 8 bits of this value are inhibits MIO_STATE Read or write the state of the 3 bits of MIO in a single binary encoded value Does not configure direction Aread of an output returns the current logic level on the terminal not necessarily the output state written The upper 8 bits of this value are inhibits For example To read the digital state of all FIO lines in a bit mask read FIO_STATE The value will be something like 0611111011 representing 1 for logic high and 0 for logic low FlO2 is currently logic low Digital I O Direction Bit Masks Each of these is a single binary encoded value representing the direction of 8 bits of VO Each bit designates an I O line O Input and 1 Output The upper 8 bits of this value are inhibits The inhibit bits prevent the corresponding direction bit from being modified Direction Bit Masks Name Start Address Type Access Default FIO_DIRECTION 2600 UINT16 R W EIO_DIRECTION 2601 UINT16 R W CIO_DIRECTION 2602 UINT16 R W MIO_DIRECTION 2603 UINT16 R W FIO_DIRECTION Read or w
101. ding the average time per iteration for each task The execution time includes LabVIEW overhead LJM library overhead Windows overhead communication time USB Ethernet WiFi and T7 processing time A USB high high configuration means the T7 is connected to a high speed USB2 hub which is then connected to a high speed USB2 host Even though the T7 is not a high speed USB device such a configuration does provide improved performance Typical examples of USB other would be a T7 connected to an old full speed hub hard to find or more likely the T7 is connected directly to the USB host your PC even if the host supports high speed Preemptive Operating Systems and Thread Priority itis important to understand that Linux Mac and Windows are generally best effort operating systems and not real time meaning that the speeds below can vary based on each individual computer the hardware inside of it its currently enabled peripherals current network traffic strength of signal design of the application software other running software and many more variables 1 98 Ethernet amp USB These times are quite predictable Software issues mentioned above are important but in terms of hardware the times below will be consistent The T7 is not consuming a major portion of USB or Ethernet bandwidth Therefore the overhead times listed are typically maintained even with substantial activity on the bus WiFi The WiFi times tend to vary mu
102. dings For differential readings channels are grouped into pairs the positive channel is an even number and the negative channel is odd Only adjacent channel numbers can be used as differential e g 0 and 1 form a pair but 0 and 3 cannot form a pair Differential channel pairs Differential Pair Positive Negative AIN AIN Other unique analog channels 74 AIN Function Internal Temperature Sensor 14 volts 15 199 Ground GND Special AINs Name Start Address Type Access Default AIN 14 15 28 FLOAT32 R AIN 14 15 Returns the voltage of the specified analog input Names Addresses AIN14 AIN15 28 30 itis possible to read GND directly via AIN15 or AIN199 Read more on the temperature sensor in temperature sensor section 14 3 Extended Channels The Mux80 is a ready made analog input expansion board which adds 80 analog inputs when used in conjunction with a T7 The extended channels can be read using the following registers For details about the physical mapping of pins see the Mux80 Datasheet For differential extended channels the positive channel must map to an even channel from 0 12 and the negative channel must map to the odd channel 1 higher i e 1 13 That means that for extended channel numbers the negative channel must be 8 higher than the positive channel For example a valid differential extended channel pair would be Ch AIN102 and Ch AIN110 since AIN102 m
103. ds will start from INTERNAL_FLASH_READ Data read from internal flash INTERNAL_FLASH_WRITE_POINTER Address in internal flash where writes will begin INTERNAL_FLASH_WRITE Data written here will be written to internal flash INTERNAL_FLASH_ERASE Erases a 4k section of internal flash starting at the specified address 61812 Read 1 512 registers starting from this address to get the data Flashis read in 32 bit chunks so you must read an even number of registers You can only read multiple registers starting from this Modbus address you can t read 61812 then read 61814 and so on The number of registers you can read at once might be further limited by the maximum packet size of the particular interface if you don t want to worry about that just stick to 13 values 26 registers or less per read For example To read 8 floats out of memory starting at external flash address 3948544 initialize the read pointer Modbus address 61810 to a value of 3948544 using eWriteAddress then read Modbus addresses starting at address 61812 using eReadAddresses The read pointer address 61810 does not automatically increment Calibration Constants The T7 automatically returns calibrated readings so most people should not concern themselves with this section If the factory applied calibration constants are of interest they are stored on internal memory and can be accessed at any time through the use of the Modbus registers listed in the
104. e collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false Lua functions IOMEM R Address Value IOMEM R Reads from the FIFO a value written to the 47000 range Address is zero if FIFO is empty IOMEM W void IOMEM W Address Value Writes to the IO RAM Values here are simply RAM you can overwrite them and they can be read through modbus at any time Example script MB W 6006 1 10 while true do add val IOMEM R if add gt 0 then print string format New MB Write 0 0f Sf add val IOMEM W add 1000 val 100 end end Writing to 6006 sets the number of floats that you would like to allocate to transferring information from Lua You can now use a host program to write to the 47000 range the script will display the address and value received then save that value to a read location The location is the write address 1000 and 100 is added to the value Read from the 46000 range to see the data Examples in the works as of 12 8 2014 e Low power logging e Benchmarking tests Future Features Firmware Related 94 e Save a script to flash e Read a script from flash e Write data to web services such as DAQConnect Kipling Related e Easy toggle between modbus Names and Addresses Since Addresses are required at the lo
105. e approval of the manufacturer could result in the product not meeting the Class A limits in which case the FCC could void the user s authority to operate the equipment Declaration of Conformity Manufacturers Name LabJack Corporation Manufacturers Address 3232 S Vance St STE 100 Lakewood CO 80227 USA Declares that the product Product Name LabJack T7 Pro Model Number LJT7 Pro conforms to the following Product Specifications EMC Directive 2004 104 EEC EN 55011 Class A EN 61326 1 General Requirements and is marked with CE RoHS2 The T7 Pro is ROHS compliant to Directive 2011 65 EU of the European Parliament on the restriction of the use of certain hazardous substances in electrical and electronic equipment REACH The T7 Pro is REACH compliant REACH Product Compliance Program has been implemented in accordance with Regulation No 1907 2006 of the European Parliament and the Council of 18 December 2006 LabJack Corporation does not currently have a direct REACH obligation to pre register substances LabJack s REACH Product Compliance is determined by a certification from our supply chain LabJack products are deemed to be REACH compliant when they do not contain Substances of Very High Concern SVHCs beyond the specified concentration limits of less than 0 1 by weight as outlined in REACH 1907 2006 EU regulation CFM LabJack Corporation does not knowingly use these minerals or any by products as spec
106. e digital O include an internal series resistor that provides overvoltage short circuit protection These series resistors also limit the ability of these lines to sink or source current Refer to the Digital V O Specifications The fact that the digital O are specified as 5 volt tolerant means that 5 volts can be connected to a digital input without problems see the actual limits in the specifications in Appendix A Increase logic level to 5V In some cases an open collector style output can be used to get a 5V signal To get a low set the line to output low and to get a high set the line to input When the line is set to input the voltage on the line is determined by a pull up resistor The T7 has an internal 100k resistor to 3 3V but an external resistor can be added to a different voltage Whether this will work depends on how much current the load is going to draw and what the required logic thresholds are Say for example a 10k resistor is added from EIO0 to VS EIOO has an internal 100k pull up to 3 3 volts and a series output resistance of about 180 ohms Assume the load draws just a few microamps or less and thus is negligible When EIO0 is set to input there will be 100k to 3 3 volts in parallel with 10k to 5 volts and thus the line will sit at about 4 85 volts When the line is set to output low there will be 180 ohms in series with the 10k so the line will be pulled down to about 0 1 volts The surefire way to get 5 volts fro
107. e measured on an AIN channel 2 Resolution index 0 defaults the T7 to resolution index 8 and the T7 Pro to resolution index 9 3 The T7 Pro is equipped with a 24 bit delta sigma ADC in addition to the standard 16 bit ADC Analog conversions occur on the 16 bit ADC when resolution index values 0 8 are used Analog conversion occur on the 24 bit ADC when resolution index values 9 12 are used A 3 2 Signal Range The following figures show the approximate signal range of the T7 analog inputs Input Common Mode Voltage or Vcm is Vpos Vneg 2 Keep in mind that the voltage of any input compared to GND should be within the Vm and Vm rails by at least 1 5 volts so if Vmis the typical 13 volts the signals should be within 11 5 volts compared to GND Example 1 Say a differential signal is measured where Vpos is 10 05 volts compared to GND and Vneg is 9 95 volts compared to ground and G 100 That means Vcm 10 0 volts Vdiff 0 1 volts and the expected Vout 10 0 volts There is not figure for G 100 below but Vcm 10 0 volts and Vout 10 0 volts is not valid at G 1 or G 1000 so is certainly not valid in between Example 2 Say a differential signal is measured where Vpos is 15 0 volts compared to GND and Vneg is 14 0 volts compared to ground and G 1 That means Vcm 14 5 volts Vdiff 1 0 volts and the expected Vout 1 0 volts The voltage of each input compared to 106 GND is too high so this would not work at all Example 3 Say a
108. e the triangle waveform 0 5V 1V 1 5V 1V so the next step is to write these datum to the appropriate buffer Because it is a DAC output floating point number use the STREAM _OUTO_BUFFER_F32 register 1 STREAM _OUTO_BUFFER_F32 gt Write the four values one at a time or as an array 2 STREAM_OUTO_LOOP_SIZE 4 gt Loop four values 3 STREAM_OUTO_SET_LOOP 1 gt Begin using new data set immediately Observe result with stream mode Every time the stream is run AINO is read then DACO is updated with a data point from Stream Out0 s buffer then AIN2 is read Thus the streaming speed dictates the frequency of the output waveform Sequential Data Once a sequence of values has been set via the STREAM _OUT _ SET LOOP register that sequence of values will loop and only be interrupted at the end of the sequence Therefore to have stream out continuously output a sequence of values that is larger than the size of one stream out buffer probably the easiest way to do so is to 1 Start by dividing the stream out buffer into 2 halves 2 Write one half of the buffer with your sequential data 3 Ina loop every time the STREAM_OUT _BUFFER_STATUS reads as being half full empty write another half buffer worth of values Note that the buffer is a circular array so you could end up overwriting values if you re not careful Here s an example Stream out buffer is 512 bytes divide that by 2 to get the number of samples the buffer ca
109. ed ONEWIRE_GO Instructs the T7 to perform the configured 1 wire transaction ONEWIRE_ROM_MATCH_H Upper 32 bits of the ROM to match ONEWIRE_ROM_MATCH_L Lower 32 bits of the ROM to match ONEWIRE_ROM_BRANCHS_FOUND_H Upper 32 bits of the branches detected during a search ONEWIRE_ROM_BRANCHS_FOUND_L Lower 32 bits of the branches detected during a search ONEWIRE_SEARCH_RESULT_H Upper 32 bits of the search result ONEWIRE_SEARCH_RESULT_L Lower 32 bites of the search result ONEWIRE_PATH_H Upper 32 bits of the path to take during a search ONEWIRE_PATH_L Lower 32 bits of the path to take during a search ONEWIRE_DATA_TX Data to be transmitted over the 1 wire bus ONEWIRE_DATA_RX Data received over the 1 wire bus 13 6 Asynchronous Serial The T7 has UART functionality available that supports asynchronous asynch serial communication The TX transmit and RX receive lines can appear on any digital O Baud rates up to 38400 are supported but the T7 processor is heavily loaded at that rate Number of data bits number of stop bits and parity are all controllable This asynchronous support is similar to RS 232 except that the logic is normal CMOS TTL Connection to an RS 232 device will require a converter chip such as the MAX233 which inverts the logic and shifts the voltage levels This serial link is not an alternative to the USB Ethernet WiFi connection Rather the host application will write read data to fro
110. edges DIO2_EF_CONFIG_C 0 Reset events clear the count of DIOO_EF DIO2_EF_ENABLE 1 Turn on the DIO_EF Now falling edges on DIO2 will set the count of DIOO_EF to zero 13 2 I2C 56 The T7 supports Inter Integrated Circuit PC or I2C communication as the master only PC is a synchronous serial protocol typically used to communicate with chips that support I2C as slave devices Any 2 digital I O lines are used for SDA and SCL Note that the PC bus generally requires pull up resistors of perhaps 4 7 KQ from SDA to Vs and SCL to Vs and also note that the screw terminals labeled SDA and SCL if present are not used for PC This serial link is not an alternative to the USB connection Rather the host application will write read data to from the T7 and the T7 communicates with some other device using the serial protocol Using this serial protocol is considered an advanced topic A good knowledge of the protocol is recommended and a logic analyzer or oscilloscope might be needed for troubleshooting I2C Registers Name Start Address 12C_SDA_DIONUM 5100 I2C_SCL_DIONUM 5101 I2C_SPEED_ THROTTLE 5102 I2C_SLAVE_ADDRESS 5104 I2C_NUM_BYTES TX 5108 I2C_NUM_ BYTES RX 5109 I2C_OPTIONS 5103 I2C_GO 5110 I2C_ACKS 5114 I2C_DATA_TX 5120 I2C_DATA_RX 5160 12C_SDA_DIONUM The number of the DIO line to be used as the I2C data line Ex Writing 0 will force FIOO to become the I2C SDA line 12C_SCL_DIONUM The number of the DIO line to be used
111. ely read the temperature in degrees Kelvin using the registers TEMPERATURE_AIR_K and TEMPERATURE_DEVICE_K Internal Temp Sensor Name Start Address Type Access Default TEMPERATURE_AIR_K 60050 FLOAT32 R TEMPERATURE_DEVICE_K 60052 FLOAT32 R TEMPERATURE_AIR_K Returns the estimated ambient air temperature just outside a T7 in its red plastic enclosure This register is equal to TEMPERATURE_DEVICE_K 4 3 If Ethernet and or WiFi is enabled subtract an extra 0 6 for each TEMPERATURE_DEVICE_K Takes a reading from AIN14 using range 10V and resolution 8 and applies the formula Volts 92 6 467 6 to return degrees K AIN14 is internally connected to an LM94021 U24 with GS 10 which is physically located on the bottom of the PCB between the AINO 1 and AIN2 3 screw terminals Offset considerations The unadjusted sensor reading best reflects the temperature of the device inside the enclosure and the temperature of the AINO 3 screw terminals This is what you get from TEMPERATURE_DEVICE_K in degrees Kelvin TEMPERATURE_AIR_K is an estimate of the ambient air temperature outside the device It is calculated depending on whether Ethernet and or WiFi is enabled as follows USB TEMPERATURE_AIR_K TEMPERATURE_DEVICE_K 4 3 USB amp Ethernet TEMPERATURE_AIR_K TEMPERATURE_DEVICE_K 4 9 USB amp WiFi TEMPERATURE_AIR_K TEMPERATURE_DEVICE_K 4 9 USB amp Ethernet amp WiFi TEMPERATURE_AIR_K TEMPERATURE_DEVICE_K 5 5 These offsets were
112. er READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A_AND_RESET Performs the same operation as DIO _EF_READ_A then sets the count to zero Example Configure FIO2 amp FIO3 as quadrature inputs DIO2_EF_ENABLE 0 Make sure DIO EF is disabled on FIO2 DIO3_EF_ENABLE 0 Make sure DIO EF is disabled on FIO3 DIO2_EF_INDEX 10 Set feature index for FIO2 to quadrature DIO3_EF_INDEX 10 Set feature index for FIO3 to quadrature DIO2_EF_ENABLE 1 Enable quadrature DIO EF on FIO2 for A phase DIO3_EF_ENABLE 1 Enable quadrature DIO EF on FIO3 for B phase Edges on the two lines will now be decoded and the count will be incremented or decremented according to the edge sequence The current count can be read from DIO2_EF_READ_Aor DIO2_EF_READ_A_AND_RESET Testing On some LabJack devices you can randomly tap a GND wire into FIO2 and FIO3 to cause some counts but that does not work on the T7 Testing needs to be done with a proper quadrature signal If testing with an actual encoder first start with DIO EF enabled and simply watch e g in Kipling the digital inputs as you slowly turn the encoder to see if the inputs change between high and low That confirms a valid electrical connection 53 You can test using 2 digital inputs to create a quadr
113. er way to think of the edge limit and understand error that could be introduced when using multiple interrupt based DIO EF is to consider that the interrupt that processes an edge can take up to 14 us to complete When a particular channel sees an applicable edge an IF interrupt flag is set for that channel that tells the processor it needs to run an ISR interrupt service routine for that channel Once an ISR is started it runs to completion and no other ISR can run until it is done except that stream interrupts are higher priority and will preempt other interrupts When an ISR completes it clears the IF for that channel So it is okay to have edges on multiple channels at the same time as long as there is not another edge on any of those channels before enough time to process all the initial edges Say that channel A amp B have an edge occur at the same time and an ISR starts to process the edge on channel A If channel A has another edge during the first 14 us that edge will be lost If channel B has another edge during the first 14 us the initial edge will be lost If channel B has another edge during the second 14 us during the ISR for channel B the new edge will be lost 13 1 13 Conditional Reset DIO_EF Conditional Reset will reset a specified DIO_EF after a specified number of edges have been detected Configure To set up a DIO_EF Conditional Reset is simple Just set the DIO num of the DIO_EF you would like to reset and then
114. erform the math to handle cold junction compensation CJC and voltage to temperature conversion Firmware automatically handles any complicated math e RTDs Automatically calculate a resistance value from an RTD Can use either a constant current source known excitation voltage or secondary measurements across a shunt resistor AIN EF is only supported in command response mode not stream mode Configuration Before anAIN_EF can be used a few settings need to be written The desired operation is selected by writing the associated index number to AIN 0 13 EF_INDEX Depending on the selected index several configuration registers can be written The details of the configuration registers can be found in the associated index section Analog input settings such as range resolution settling and negative channel are configured through the normal AIN registers Reading When READ_ Ais read from the LabJack it will read from analog inputs run calculations and then return the result If the selected index produces more than one result they will be saved so that they can be read later Reading from result registers other thanA read from the saved values and do not initiate a new reading List of index values 69 0 None disabled 1 Slope Offset 11 FlexRMS 20 Thermocouple type E 21 Thermocouple type J 22 Thermocouple type K 23 Thermocouple type R 24 Thermocouple type T 24 Thermocouple type T 24 Thermocouple type T 40
115. ess The starting address of each register Valid through LJM or with direct Modbus Details Click to get text pulled from the description field in the JSON Type Specifies the datatype which also tells you how many registers each value uses Access Read only write only or read amp write Tags Used to associate registers with particular functionality Useful for filtering For a U3 U6 with firmware less than 2 0 or for the UE9 see the deprecated Modbus system called UD Modbus Device AllDevices AIN AIN_EF ASYNCH CONFIG CORE DAC DIO DIO_EF Tags ETHERNET z Expand addresses Show 10 entries Search name address type access tags details AIN 0 254 0 FLOAT32 R AIN CORE DAC 0 1 1000 FLOAT32 R W DAC CORE CURRENT_SOURCE_10UA_CAL_VALUE 1900 FLOAT32 R CONFIG CURRENT_SOURCE_200UA_CAL_VALUE 1902 FLOAT32 R CONFIG in FIO 0 7 2000 UINT16 R W DIO CORE DIO 0 7 2000 UINT16 R W DIO CORE EIO 0 7 2008 UINT16 R W DIO CORE EEEREN anno LINTAG Dam nina conc A TE 3 2 Stream Mode The highest input data rates are obtained in stream mode Stream is a continuous hardware timed input mode where a list of channels addresses is scanned at a specified scan rate The scan rate specifies the interval between the beginning of each scan The samples within each scan are acquired as fast as possible The max sample rate of t
116. firmware files onto a T7 Also use Kipling to identify the current WiFi and Firmware versions on your T7 Change Log 1 0146 Fixed a bug that would prevent UART from being disabled once enabled Also fixed a bug involving AIN_EF power up default settings On previous versions of firmware configuring some AIN_EF channels as theromocouples and then saving those settings as 113 power up defaults would cause the device to enter a continuously resetting state on the next power reset wherein the LEDs would blink rapidly itis possible to recover from the continuously resetting state by jumpering a wire between SPC and FIO3 or between SPC and FlO2 Click To Expand Change Log Appendix D Packaging Information Package Contents The normal retail packaged T7 or T7 Pro consists of T7 Pro unit itself in red enclosure USB cable 6ft 1 8m Ethernet Cable 6ft 1 8m USB 5V power supply Screwdriver Antenna T7 Pro only Other package details There is no software CD included so an internet connection is required to download software Go to the T7 Support Homepage labjack com support t7 to get started Contact support labjack com for additional information on shipping Package size 10 x7 x3 Package wt 1 2lb Appendix E Datasheet Revision History Revision G July 2014 Changed the modes for the Interrupt Counter with Debounce Extended Feature for consistency with firmware 1 0119 and greater Small change to
117. gital I O Extended Features PWM Out Produces a rectangular output with variable frequency and variable duty cycle PWM Out with Phase Allows a phase difference between multiple PWM outputs Pulse Out You can specify the number of pulses frequency of pulses and pulse width Frequency In Measures the period frequency Pulse Width In Measures the high and low time and thus also measures duty cycle Line to Line In Measures the time between edges on 2 different DIO lines High Speed Counter Hardware based edge counter Interrupt Counter A hardware edge counter that must service an interrupt for each edge Interrupt Counter with Debounce Use to avoid counting bounces from mechanical switches Quadrature In Tracks the forward reverse count provided by a quadrature signal Interrupt Frequency In Frequency measurement that must service an interrupt for each edge All counters are 32 bit Each digital IO has a set of registers dedicated to the configuration of and results produced by the Extended Features These registers are used to perform four operations on the Extended Feature Configure Read Update and Reset Below you will find general descriptions of the four operations Details about each feature can be found in their corresponding sections Configure Configuration is the initial setup of the Extended Feature Configuration requires that any EF running at the pin in question first be disabled Options can then be loa
118. he Lua Script to the device LJM_eWriteName handle LUA_SOURCE_SIZE scriptLength 3 Break up the Lua Script array into 32 byte chunks and write them to LUA SOURCE WRITE int numPackets Math ceil scriptLength 32 Calculate the number of packets to send int numFullPackets Math floor scriptLength 32 Calculate the number of full packets to send int numPartialPackets numPackets numFullPackets Calculate the number of partial packets to send for i 0 i lt numFullPackets i subStr scriptData split i 32 i 1 32 1 get the current packet s data dataArray convertStrToArrayOfDoubles subStr LJM_eWriteNameArray handle LUA_SOURCE_WRITE 32 dataArray Write data to device 4 If necessary write the remaining chunk of data if numPartialPackets gt 0 firstCharIndex numFullPackets 32 subStr scriptData split firstCharIndex scriptLength dataArray convertStrToArrayOfDoubles subStr int dataLength dataArray length LJM_eWriteNameArray handle LUA_SOURCE_WRITE dataLength dataArray Write data to device Information regarding the functions used in this example are available on LJM s function reference page 13 1 3 PWM Out with Phase Capable DIO FIOO FIO2 FIO3 FIO4 FIO5 Requires Clock Source Yes Index 1 PWM Output with phase control generates PWM waveforms with the pulse positioned at different points in the period This is achieved by setting the DIO li
119. he T7 is 100 ksamples second This is achievable for any single address stream but for a multi address stream is only true if ResolutionIndex 0 or 1 and Range 10V for all analog inputs The max scan rate depends on how many addresses you are sampling per scan Sample gt A reading from one channel address Scan gt One reading from all channels addresses in the scan list SampleRate NumAddresses ScanRate For example if streaming 5 channels at ResolutionIndex 0 and all at Range 10V the max scan rate is 20 kscans second calculated from 100 ksamples second divided by 5 Ethernet is capable of the fastest stream rates USB is typically a little slower than Ethernet and WiFi is much slower For more information on speeds see the Data Rates Appendix Stream mode is not supported on the hi res converter resolutions 9 12 not supported in stream As samples are collected they are placed ina FIFO buffer on the T7 until retrieved by the host The size of the buffer is variable and can be set to a maximum of 32764 bytes Each data packet has various measures to ensure the integrity and completeness of the data received by the host Data can be sent to the host in two different ways The first is Spontaneous In spontaneous mode packets are automatically sent to the host as soon as there is enough data to fill a packet The packet size is adjustable see the register definitions below The second is Command Response C
120. he device In other words data transfer is software paced Command response is generally used at 1000 scans second or slower and is generally simpler than stream mode Command response mode is generally best for minimum latency applications such as feedback control By latency here we mean the time from when a reading is acquired to when it is available in the host software A reading or group of readings can be acquired in times on the order of a millisecond See AppendixA 1 for details on c r data rates Stream Mode Stream mode is generally best for maximum throughput applications However streaming is not recommended for feedback control operations due to the latency in data recovery Data is acquired very fast but to sustain the fast rates it must be buffered and moved from the device to the host in large chunks Streaming is only available through the high level LUM library and is not possible using direct Modbus communication Stream mode is a continuous hardware paced input mode where a list of addresses is scanned at a specified scan rate The scan rate specifies the interval between the beginning of each scan The samples within each scan are acquired as fast as possible As samples are collected automatically by the device they are placed ina buffer on the device until retrieved by the host Stream mode is generally used when command response is not fast enough Stream mode is not supported on the hi res converter resolutions 9 12 not s
121. he initial edges Say that channel A amp B have an edge occur at the same time and an ISR starts to process the edge on channel A If channel A has another edge during the first 14 us that edge will be lost If channel B has another edge during the first 14 us the initial edge will be lost If channel B has another edge during the second 14 us during the ISR for channel B the new edge will be lost 50 13 1 10 Interrupt Counter with Debounce Capable DIO FIOO FIO1 FIO2 FIO3 FIO6 and FIO7 Requires Clock Source No Index 9 Requires firmware 1 0119 or higher Interrupt Counter with Debounce will increment its count by 1 when it receives a rising edge a falling edge or any edge 2x counting After seeing an applicable edge any further edges will be ignored during the debounce time This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge See the discussion of edge rate limits at the bottom of this page Debounce Modes DIO _EF_CONFIG_B The exact behavior of the counting debouncing is controlled by an index value written to DIOH_EF_CONFIG_B Count falling debounce all self restarting timeout Count rising debounce all self restarting timeout Count amp debounce all self restarting timeout Count amp debounce falling fixed timeout Count amp debounce rising fixed timeout Timeout starts on falling edge During t
122. hnician for help To satisfy FCC RF Exposure requirements for mobile and base station transmission devices a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during operation To ensure compliance operation at closer than this distance is not recommended The antenna s used for this transmitter must not be co located or operating in conjunction with any other antenna or transmitter Canada Contains transmitter module IC 6514A RN171 This device complies with Industry Canada license exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including interference that may cause undesired operation of the device Le pr sent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autoris e aux deux conditions suivantes 1 l appareil ne doit pas produire de brouillage et 2 l utilisateur de l appareil doit accepter tout brouillage radio lectrique subi m me si le brouillage est susceptible d en compromettre le fonctionnement Under Industry Canada regulations this radio transmitter may only operate using an antenna of a type and maximum or lesser gain approved for the transmitter by Industry Canada To reduce potential radio interference to other users the antenna type and its gain should be so chosen that the equ
123. ice each edge This makes it substantially slower than other DIO EF that are purely hardware based To avoid missed edges the aggregate limit for edges seen by all interrupt based DIO EF is 70k edges second If stream mode is active the limit is reduced to 20k edges second Excessive processor loading e g a busy Lua script can also reduce these limits The more proper way to think of the edge limit and understand error that could be introduced when using multiple interrupt based DIO EF is to consider that the interrupt that processes an edge can take up to 14 us to complete When a particular channel sees an applicable edge an IF interrupt flag is set for that channel that tells the processor it needs to run an ISR interrupt service routine for that channel Once an ISR is started it runs to completion and no other ISR can run until it is done except that stream interrupts are higher priority and will preempt other interrupts When an ISR completes it clears the IF for that channel So itis okay to have edges on multiple channels at the same time as long as there is not another edge on any of those channels before enough time to process all the initial edges Say that channel A amp B have an edge occur at the same time and an ISR starts to process the edge on channel A If channel A has another edge during the first 14 us that edge will be lost If channel B has another edge during the first 14 us the initial edge will be lost If channe
124. idth In will measure the high time and low time of a digital input signal by counting the number of clock source ticks while the signal is high and low The number of high ticks can be read from DIO _EF_READ_A and the number of low ticks can be read from DIO _EF_ READ B Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR Aypically 80M Divisor HighTime s DIO _EF_READ_A Clock Frequency LowTime s DIO _EF_READ_B Clock Frequency Resolution s 1 Clock Frequency Max High or LowTime s DIO_LEF_CLOCK _ROLL_VALUE Clock Frequency CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO_EF_CLOCK _DIVISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to a divisor of 1 For more details about Clock Frequency and DIO_EF_CLOCK _DIVISOR see the DIO EF Clock Source section Roll value for this feature would typically be left at the default of 0 which is the max value 232 for the 32 bit Clock0 but you might be 45 using a lower roll value for another feature such as PWM output A couple typical scenarios with roll value 0 and using the 32 bit clock Clock0 Divisor 1 Resolution 12 5 nanoseconds MaxTime 53 7 seconds Divisor 256 Resolution 3 2 microseconds MaxTime 229 minutes Once this feature is enabled a new measurement happens on every applicable edge and both result registers are update
125. ified by the Conflict Minerals Trade Act Compliance Information for the WiFi module in the T7 Pro and T7 Pro OEM FCC Contains FCC ID T9J RN171 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV tec
126. ill just get the value from the last WiFi communication that occurred OEM Whip Antenna The OEM whip antenna is a short segment of wire only 30mm in length This whip antenna provides an inexpensive solution for adding WiFi to an OEM board without the need to figure out mounting of a bigger antenna The signal strength of a 30mm whip antenna is on average 11dB less than that of the stock antenna The table below demonstrates the 30mm antenna signal strength at various distances Distance RSSI 10m 49dBm 25m 58dBm 50m 70dBm 100m 73dBm 24 Improve signal strength The first step to improve the signal strength at large distances is to insure direct line of sight Beyond that the next best thing is to elevate the transmitter and receiver antennas Even an elevation of 1m off the ground helps quite a bit Be sure to consider the probability of lightning strikes if the antenna is high relative to the surroundings e a The next step to improve signal strength is to use a directional WiFi antenna Directional antennas improve range ae substantially such that even a homemade solution can increase range to fifteen times that of a non directional antenna If you need something to work at 500m it s possible to buy a simple yagi antenna for 60 USD approx Network Diagrams Figure 1 demonstrates a basic network diagram where the T7 Pro is connected to the Office WiFi network The T7 Pro can be controlled by either host o
127. ill read between 0 and ROLL_VALUE 1 13 1 2 PWM Out Capable DIO FIOO FIO2 FIO3 FIO4 and FIO5 Requires Clock Source Yes Index 0 PWM Out will generate a pulse width modulated wave form Operation PWM output will set the DIO high and low relative to the clock source s count When the the count is zero the DIO line will be set high When the count matches Config A the line will be set low Therefore Config A is used to control the duty cycle and the resolution is equal to the roll value Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR I typically 80M Divisor PWMFrequency Clock Frequency DIO_EF_CLOCK _ROLL_VALUE DutyCycle 100 DIO _EF_CONFIG_A DIO_EF_CLOCK _ROLL_VALUE For the common case of CoreFrequency 80 MHz we can rewrite output frequency as PWMFrequency 80M DIO_EF_CLOCK _DIVISOR DIO_EF_CLOCK _ROLL_VALUE and for 50 duty cycle square wave simply set DIO _EF_CONFIG_A DIO_EF_CLOCK _ROLL_VALUE 2 CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO_EF_CLOCK _DIVISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to a divisor of 1 For more details about Clock Frequency and DIO_EF_CLOCK _DIVISOR see the DIO EF Clock Source section PWM Out is capable of glitch free updates in most situations A glitch free update means that the PWM will finish the current perio
128. imeout a rising edge cancels and a falling edge restarts the timeout After timeout any edge causes a count e 6 Timeout starts on rising edge During timeout a falling edge cancels and a rising edge restarts the timeout After timeout any edge causes a count akWN O Self restarting timeout means that during timeout any edge will restart the timeout with the value specified with DIO _EF_CONFIG_A Mode 0 is commonly used with a normally open push button switch that is actuated by a person We only want to count the push falling edge but expect bounce on the push amp release falling amp rising edges so need to debounce both Mode 4 might be used with some sort of device that outputs a fixed length positive pulse For example say a device provides a 1000 Us pulse and there is always at least 5000 us between pulses Set the debounce timeout to 2000 us so that the timeout period safely covers the entire pulse but the timeout will for sure be done before another pulse can occur Modes 5 amp 6 implement a requirement that the state of the line must remain low or high for some amount of time For example if you use mode 5 with a push button switch and set DIO _EF_CONFIG_A 50000 that means that someone must push the switch and hold it down solidly for at least 50ms and then the count will occur when they release the switch An advantage to these modes is that they will ignore brief transient signals Configure DIO _EF_ENABLE 0 Di
129. inals are the same and connect to the same ground plane GND is also connected to the ground pin on the USB connector so if there is a connection to a USB port on a hub host as opposed to just a power supply connection then GND is the same as the ground line on the USB connection which is often the same as ground on the PC chassis which is often the same as AC mains ground See the AIN DAC and Digital O FIO EIO ClO MIO Sections for more information about grounding The max total current that can be sunk into GND is 500mA DeviceSupplyCurrent so if the T7 needs 250mA to run the current sunk into GND terminals should be limited to 250mA Note that sinking substantial current into GND can cause slight voltage differences between different ground terminals which can cause noticeable errors with single ended analog input readings 11 0 SPC SPC outputs diagnostic timing signals while streaming see Stream Section for details and is also used to force special startup behavior Lo sci To force special startup behavior securely install a short jumper wire from SPC to one of the following digital VO lines FIOO Force boot to main firmware internal image Used to boot the internal firmware even if its checksum is bad FIO1 Force copy of backup image to overwrite internal image Used to load the external firmware even if its checksum is bad F1O2 Factory reset Sets the start up configuration to factory settings Disables Lua script
130. ind sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false 14 1 1 Thermocouples Index 20 24 The AIN extended features system can automatically perform the necessary calculations for Type E J K R and T thermocouples Thermocouple modes read an analog input connected to a thermocouple and a second specified AIN connected to a CJC sensor The CJC slope and offset are used to compute the CJC temperature then the thermocouple temperature is calculated The on board temperature sensor is the default CJC channel The thermocouple feature will use the normal analog input settings for negative channel resolution index and settling For example if you want a differential reading of AINO AIN1 set AINO_NEGATIVE_CH 1 If the range of the applicable channel is set to the default 10 volts the thermocouple feature will automatically use the 0 1 volt range otherwise the specified range will be used CJC calculations are always done in degrees K regardless of whether Config A is used to change the output units Config D and Config E should be used as needed to scale the CJ sensor reading to degrees K Thermocouple feature index values 20 Thermocouple type E 21 Thermocouple type J 22 Thermocouple type K 23 Thermocouple type R
131. ine version of this entire document click Print all towards the upper right of this page allow 30 seconds To make an offline version of a particular section go to that page and click Print all towards the upper right of that page Doing so converts this page and all sub pages to a single HTML page If you need to translate the document do that now To produce a PDF use the print option in your browser and use whatever print to PDF option you might have available e g PrimoPDF Rather than downloading though we encourage you to use this web based documentation Some advantages e We can quickly improve and update content e Click able links to further or related details throughout the online document e The site search includes the datasheet forum and all other resources at labjack com When you are looking for something try using the site search e For support try going to the applicable datasheet page and post a comment When appropriate we can then immediately add change content on that page to address the question Occasionally we export a PDF and attach it to this page below Datasheet File attachment T7 Datasheet Export 20150217 pdf Preface Warranty Liability Compliance For the latest version of this and other documents go to www labjack com Copyright 2013 LabJack Corporation Warranty The LabJack T7 is covered by a 1 year limited warranty from LabJack Corporation covering this product and parts against
132. ionality provided by these two utilities will soon be integrated into Kipling Know Issues e Images currently do not transfer properly File attachment Hi 17 WebPages PoC 20151301 zip Appendix A Specifications Specifications for describing the T7 can be broken down into several primary sections with a few sub sections Navigate the following sections to see specifications A 1 Data Rates Communication Modes Communications between the host computer and the T7 occur using one of two modes 1 Command Response 2 Stream The Command Response mode will apply to most applications and consists of command data packet sent from the host followed by a response data packet from the T7 Stream mode relies on the T7 to carry out periodic sampling events automatically Collected data is stored in the T7 s memory until it retrieved by the host application Figure A1 1 1 depicts a the two operating modes for the T7 97 command A c IO Data Command Response Mode Host USB ee Ethernet OR Application WiFi cay Co Ceen At At Moa Moa Figure A1 1 T7 communication modes The use of a particular mode will depend desired T7 functionality and the hardware response time required by the end application Not all functionality is supported in stream mode Please refer to the Stream Mode section of the user s manual detailing stream mode operations Command Response Data Rates All communication performed with the T7 is ac
133. iplexer ICs such as the DG408 from Intersil The multiplexers can only pass signals within their power supply range so Vm Vm can be used to pass bipolar signals Nominal voltage is 13 volts at no load and 12 volts at 2 5 mA Both lines have a 100 ohm source impedance and are designed to provide 2 5 mA or less This is the same voltage supply used internally by the T7 to bias the analog input amplifier and multiplexers If this supply is loaded more than 2 5 mA the voltage can droop to the point that the maximum analog input range is reduced If this supply is severely overloaded e g short circuited then damage could eventually occur If Vm Vm are used to power multiplexers series diodes are recommended as shown in Figure 9 of the Intersil DG408 datasheet Not so much to protect the mux chips but to prevent current from going back into Vm Vm Use Schottky diodes to minimize voltage drop CB37 Terminal Board The CB37 terminal board from LabJack connects to the DB37 connector and provides convenient screw terminal access to all lines The CB37 is designed to connect directly to the DB37 but can also connect via a 37 line 1 1 male female cable When using the analog connections on the CB37 the effect of ground currents should be considered particularly when a cable is used and substantial current is sourced sunk through the CB37 terminals When any sizeable cable lengths are involved a good practice is to separate current carrying ground fr
134. ite their own code to load a script file to the T7 that process is outlined in the pseudocode below Only attempt this process if you are unhappy with Kipling because Kipling is cross platform and should work for most users The LJM functions used in this Pseudocode example are e LUM Opens e LJM_ eWriteName e LJM_eWriteNameArray Configure Lua Script Functionality on T7 95 int handle LJM_OpenS ANY ANY ANY Open the first found device Start and Stop a Lua Script LJM_eWriteName handle LUA_RUN 1 LJM_eWriteName handle LUA_RUN 0 Start a Lua Script Stop a Lua Script Saving Lua Script to a Device 1 Stop the Lua Script LUM_eWriteName handle LUA_RUN 0 Stop the Lua Script string scriptData LJ IntervalConfig 0 1000 while true do if LJ CheckInterval 0 then print Hello world from VERSION n end end int scriptLength scriptData length 2 Write the size of the Lua Script to the device LJM_eWriteName handle LUA_SOURCE_SIZE scriptLength 3 Break up the Lua Script array into 32 byte chunks and write them to LUA SOURCE WRITE int numPackets Math ceil scriptLength 32 Calculate the number of packets to send int numFullPackets Math floor scriptLength 32 Calculate the number of full packets to send int numPartialPackets numPackets numFullPackets Calculate the number of partial packets to send for i O i lt numFullPac
135. ivalent isotropically radiated power e i r p is not more than that necessary for successful communication Conform ment a la r glementation d Industrie Canada le pr sent metteur radio peut fonctionner avec une antenne d un type et d un gain maximal ou inf rieur approuv pour l metteur par Industrie Canada Dans le but de r duire les risques de brouillage radio lectrique a l intention des autres utilisateurs il faut choisir le type d antenne et son gain de sorte que la puissance isotrope rayonn e quivalente p i r e ne d passe pas l intensit n cessaire a l tablissement d une communication satisfaisante This radio transmitter identify the device by certification number or model number if Category II has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Conform ment a la r glementation d Industrie Canada le pr sent metteur radio peut fonctionner avec une antenne d un type et d un gain maximal ou inf rieur approuv pour l metteur par Industrie Canada Dans le but de r duire les risques de brouillage radio lectrique a l intention des autres utilisateurs il faut choisir le type d antenne et son gain de sorte que la puissance isotrope
136. kets i subStr scriptData split i 32 i 1 32 1 get the current packet s data dataArray convertStrToArrayOfDoubles subStr LJM_eWriteNameArray handle LUA_SOURCE_WRITE 32 dataArray Write data to device 4 If necessary write the remaining chunk of data if numPartialPackets gt 0 firstCharIndex numFullPackets 32 subStr scriptData split firstCharIndex scriptLength dataArray convertStrToArrayOfDoubles subStr int dataLength dataArray length LJM_eWriteNameArray handle LUA_SOURCE_WRITE dataLength dataArray Write data to device Information regarding the functions used in this example are available on LJM s function reference page 26 0 HTTP Server HTTP Server Alpha Required firmware 1 0136 The T7 has a simple http server that can be used to display data or control the T7 Web pages are stored on the internal flash chip where there is a maximum of 2MB available to store web pages Templating Files that end in htm or html will be scanned for two tildas surrounding a list of parameters that make a modbus command When found the command will be executed and the resulting string will replace everything enclosed in the tildas The command is a set of parameters separated by commads Refer to the following list for parameter definitions Parameter 1 The first parameter is the direction R for read and W for write Parameter 2 The second parameter is the modbus address Paramete
137. l B has another edge during the second 14 us during the ISR for channel B the new edge will be lost 13 1 11 Quadrature In Capable DIO FIOO FIO1 FlO2 FIO3 FIO6 and FIO7 Requires Clock Source No Index 10 Quadrature input uses two DIOs to track a quadrature signal Quadrature is a directional count often used in rotary encoders when you need to keep track of absolute position with forward amp reverse movement If you have movement in only one direction or another way to know direction you can simply use a normal counter with one phase of the encoder output The T7 uses 4x quadrature decoding meaning that every edge observed rising amp falling on both phases will increment or decrement the count This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge See the discussion of edge rate limits at the bottom of this page Quadrature is prone to error if the edge rate is exceeded This is particularly likely during direction change where the time between edges can be very small Errors can occur when two edges come in too quickly for the device to process which can result in missed counts or missed change in direction These errors will be recorded and the quantity encountered can be read If three edges come in 52 too quickly an undetectable error can occur Some quadrature encoders also include a third output channel called a zero z phase o
138. l PT100 41 RTD model PT500 42 RTD model PT1000 Names Addresses AINO_EF_INDEX AIN1_EF_INDEX 9000 9002 9004 Show All AIN2 EF INDEX Show All AIN_ALL_EF_INDEX Write 0 to deactivate AIN_EF on all AINs No other values may be written to this register Reads will return the AIN_EF index if all 128 AINs are set to the same value If values are not the same retuns OxFFFF 65535 AIN 0 13 _EF_CONFIG_A Names Addresses 70 AINO EF CONFIG A AIN1 EF CONFIG A 9300 9302 9304 Show All AIN2 EF CONFIG A Show All AIN 0 13 _EF_CONFIG_B Names Addresses AINO EF CONFIG B AIN1 EF CONFIG B 9600 9602 9604 Show All AIN2 EF CONFIG B Show All AIN 0 13 _EF_CONFIG_C Names Addresses AINO EF CONFIG C AIN1 EF CONFIG C 9900 9902 9904 Show All AIN2 EF CONFIG C Show All AIN 0 13 _EF_CONFIG_D Names Addresses AINO EF CONFIG D AIN1 EF CONFIG D 10200 10202 10204 Show All AIN2 EF CONFIG D Show All AIN 0 13 _EF_CONFIG_E Names Addresses AINO EF CONFIG E AIN1 EF CONFIG E 10500 10502 10504 Show All AIN2 EF CONFIG E Show All AIN 0 13 _EF_CONFIG_F Names Addresses AINO EF CONFIG F AIN1 EF CONFIG F 10800 10802 10804 Show All AIN2 EF CONFIG F Show All AIN 0 13 _EF_CONFIG_G Names Addresses AINO EF CONFIG G AIN1 EF CONFIG G 11100 11102 11104 Show All AIN2_ EF CONFIG G Show All document ready function collapsed content expander closest content f
139. le Reads the current throttle setting Lua IO Memory Lua IO Memory consists of a list of modbus addresses where data can be sent to and read from a Lua script Data transferring from the Lua script to modbus is handled with simple RAM Lua writes to the locations and another modbus master can read that information Data transferring to the Lua script from modbus is handled differently When a Lua_lO_Write address is written to the address and data are stored ina linked list The linked list is read as a FIFO by the Lua script This prevents issues arising from write order and multiple writes to the same address The dataType currently associated with these operations is Float F32 The number of floats dedicated to data transferring to Lua is specified Note that RAM usage is four times this number Lua IO Memory Name Start Address Type Access Default LUA_NUM_IO_ FLOATS 6006 UINT32 R W 93 LUA_IO 0 127 READ 46000 FLOAT32 R W LUA_IO 0 127 WRITE 47000 FLOAT32 R W LUA_NUM_IO_FLOATS Allocates memory for x input output floats LUA_lO 0 127 READ User configurable registers for Lua scripts Names Addresses LUA_I00_ READ LUA_I01_ READ LUA_1I02 READ 46000 46002 46004 Show All Show All LUA_10O 0 127 _WRITE Names Addresses LUA IO0 WRITE LUA IOl WRITE 47000 47002 47004 Show All LUA IO2 WRITE Show All document ready function collapsed content expander closest content find sometimes shown hid
140. load and update write a new firmware version to the WIFI_FIRMWARE_UPDATE_TO_VERSIONX register At the time of this witing we recommend using Kipling to update WiFi firmware since Kipling connects to the FTP server to identify what firmwere is available and monitors the WIFI_FIRMWARE_UPDATE_STATUS register automatically WiFi Firmware Registers Name Start Address Type Access Default WIFI _VERSION 60008 FLOAT32 R WIF _FIRMWARE_UPDATE_TO_VERSIONX 49402 FLOAT32 WwW 23 WIFILFIRMWARE_UPDATE_STATUS 49454 UINT32 R WIFI_VERSION The current firmware version of the WiFi module if available WIFI_FIRMWARE_UPDATE_TO_VERSIONX Start an update by using USB or Ethernet to write the desired version to update to WIFI_FIRMWARE_UPDATE_STATUS CONFIGURING 2920 IN_PROGRESS 2921 REBOOTING 2923 UPDATE_SUCCESS 2924 UPDATE_FAILED 2925 Antenna Details The T7 Pro ships with a standard RP SMA 2 4 GHz antenna similar to the W1030 or the A24 HASM 450 The connection to the WiFi module on the T7 Pro PCB is made via a snap on snap off ultra miniature coaxial connector called male U FL aka AMC IPEX IPAX IPX MHF UMC or UMCC The normal T7 Pro uses a U FL to bulkhead RP SMA cable with a length of 140mm similar to the Taoglas Limited CAB 622 Emerson 415 0100 150 Laird 1300 00041 Amphenol 336306 14 0150 or Amphenol 336306 12 0150 To search for U FL to RP SMA cable options at Digikey go to the Cable Assemblies gt Coaxial Cables
141. lt would be in the form of a floating point number e g 0 000197456 amps Some Examples Multiple resistances can be measured by putting them in series and measuring the voltage across each Some applications might need to use differential inputs to measure the voltage across each resistor but for many applications it works just as well to measure the single ended voltage at the top of each resistor and subtract in software e 200UA AINO R1 e 200UA AIN1 R2 e AINO e AIN2 R1 R3 e GND e GND Figure 12 1 Figure 12 2 Figure 12 1 shows a simple setup measuring 1 resistor If R1 3k the voltage at AINO will be 0 6 volts Figure 12 2 shows a setup to measure 3 resistors using single ended analog inputs If R1 R2 R3 3k the voltages at AINO AIN1 AIN2 will be 1 8 1 2 0 6 volts That means AINO and AIN1 would be measured with the 10 volt range while AIN2 could be measured with the 1 volt range This points out a potential advantage to differential measurements as the differential voltage across R1 and R2 could be measured with the 1 volt range providing better resolution 30 e 200UA e 200UA e AINO ee AINO R1 R1 e AIN1 AIN1 R2 R2 R3 e GND e GND Figure 12 3 Figure 12 4 Figure 12 3 shows a setup to measure 2 resistors using differential analog inputs AIN3 is wasted in this case as it is connected to ground so a differential measurement of AIN2 AIN3 is the same as a single ended measurement of AIN2 That le
142. m a digital output is to add a simple logic buffer IC that is powered by 5 volts and recognizes 3 3 volts as a high input Consider the CD74ACT541E from TI or the inverting CD74ACT540E All that is needed is a few wires to bring VS GND and the signal from the LabJack to the chip This chip can level shift up to eight 0 3 3 volt signals to 0 5 volt signals and provides 35 high output drive current 24 mA Note DACO DAC1 channels on the T7 can be set to 5 volts providing 2 output lines with such capability 13 1 DIO Extended Features Digital extended features measure and generate digital waveforms Almost every digital VO line can be assigned a feature and many can be active simultaneously Features include things like PWM Quadrature and pulse generation Features are assigned to DIOs using their type index and configured using the options and value registers The table below lists the features available on each DIO The Digital O of the LabJack are on the top of the table with the features to the left l FIO 0 7 EIO 0 7 CIO 0 3 MIO 0 2 DIO Feature Index 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 PWM Out 0 v Ys sy y PWM Out with Phase 1 v vvve Pulse Out 2 v vss y Frequency In 34 v v Pulse Width In 5 v vy Line to Line In 6 v v High Speed Counter 7 Vss Interrupt Counter 8 vvv viv Interrupt Counter with Debounce 9 vvv viv Quadrature In 10 l vivvdg viv Interrupt Frequency In 11 l Ys s Y s Di
143. m the T7 over USB Ethernet WiFi and the T7 communicates with some other device using the serial protocol Using this serial protocol is considered an advanced topic A good knowledge of the protocol is recommended and a logic analyzer or oscilloscope might be needed for troubleshooting Also consider that a better way to do RS 232 or RS 485 or RS 422 communication is usually with a standard USB lt gt RS 232 adapter converter dongle so the user should have a particular reason to not use that and use a T7 instead Asynchronous Serial Name Start Address Type Access Default ASYNCH_ENABLE 5400 UINT16 R W 0 ASYNCH_BAUD 5420 UINT32 R W 0 ASYNCH_RX_DIONUM 5405 UINT16 R W 0 ASYNCH_TX_DIONUM 5410 UINT16 R W 0 ASYNCH_NUM_DATA BITS 5415 UINT16 R W 0 ASYNCH_RX_BUFFER_SIZE_ BYTES 5430 UINT16 R W 0 ASYNCH_NUM_BYTES RX 5435 UINT16 R 0 ASYNCH_NUM_ BYTES TX 5440 UINT16 R W 0 ASYNCH_TX_GO 5450 UINT16 WwW 0 ASYNCH_NUM_STOP_BITS 5455 UINT16 R W 0 ASYNCH_PARITY 5460 UINT16 R W 0 ASYNCH_NUM_PARITY_ERRORS 5465 UINT16 R W 0 ASYNCH_DATA_TX 5490 UINT16 R W 0 ASYNCH_DATA_RX 5495 UINT16 R W 0 ASYNCH_ENABLE 1 Turn on Asynch Configures timing hardware DIO lines and allocates the receiving buffer ASYNCH_BAUD The symbol rate that will be used for communication 9600 is typical Up to 38400 works but heavily loads the T7 s processor ASYNCH_RX_DIONUM The DIO line that will receive data RX ASYNCH_TX_DIONUM The DIO line that will transmit data T
144. meaning of the integer is dependant on selected feature index Names Addresses DIOO EF READ A DIO1 EF READ A 3000 3002 3004 Show All DIO2 EF READ A Show All DIO 0 22 EF_READ_A_AND_RESET Reads the same value as DIO 0 22 EF READ A and forces a reset Names Addresses DIOO EF READ A AND RESET 3100 3102 3104 Show All DIO1l EF READ A AND RESET DIO2 EF READ A AND RESET Show All DIO 0 22 EF_READ_B Reads an unsigned integer value The meaning of the integer is dependant on selected feature index Names Addresses DIOO EF READ B DIO1 EF READ B 3200 3202 3204 Show All DIO2 EF READ B Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false How To Use a digital extended feature Disable features on the DIO using _ EF_ENABLE Select a feature and assign the corresponding type index to EF_INDEX Write to _EF_OPTIONS if necessary Write to _EF_VALUE_A EF_VALUE_B _ EF_VALUE_C _ EF_VALUE_D if necessary Enable feature on the DIO using _ EF_ENABLE Read results using _ EF_READ_A _EF_READ_B or EF READ A AND RESET DOE OOS 13 1 1 EF Clock Source The ClockSour
145. mers however will use our LJM library which provides convenient device discovery high level functions and programming flexibility Power Considerations USB ground is connected to the T7 ground GND and USB ground is generally the same as the ground of the PC chassis and AC mains since standard USB is non isolated Itis possible to isolate USB and thereby protect the T7 from a power surge coming through the computer if you use a USB isolator USB isolators typically go for 40 to 100 USD depending on the capabilities The T7 Pro will generally require a powered USB hub when in operating at full power since some USB ports hubs will not supply the current necessary 500mA Our experience with cheap USB supplies has shown them to be unreliable above 200mA We recommend a powered USB hub rated for battery charging 18 applications since these are typically rated for 1 2A See electrical specifications for details on USB current requirements If designing your own driver The LabJack vendor ID is OxOCD5 The product ID for the T7 is 0x0007 The USB interface consists of the normal bidirectional control endpoint 0 OUT amp IN 3 used bulk endpoints 1 OUT 2 IN 3 IN and 1 dummy endpoint 3 OUT Endpoint 1 consists of a 64 byte OUT endpoint address 0x01 Endpoint 2 consists of a 64 byte IN endpoint address 0x82 Endpoint 3 consists of a dummy OUT endpoint address 0x03 and a 64 byte IN endpoint address 0x83 Endp
146. microseconds MaxPeriod 229 minutes Line to Line In operates in a one shot mode Once the specified combination of edges is observed the data is saved and measuring stops Another measurement can be started by resetting or performing the configuration procedure again Configure Configuring Line to Line In requires configuring two digital VO lines FIOO amp FIO1 only as Line to Line feature index 6 The first DIO configured should be the one expecting the first edge Any extended features on either DIO should be disabled before beginning configuration DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 6 DIO _EF_OPTIONS Bits 0 2 specify which clock source to use 000 for ClockO 001 for Clock1 and 010 for Clock2 All other bits reserved and should be set to 0 DIO _EF_CONFIG_A 0 falling edge 1 rising edge DIO _EF_CONFIG _B Not used DIO _EF_CONFIG_C Not used DIO _EF_CONFIG_D Not used Update No update operations can be performed on Line to Line In Read DIO _EF_READ_A Returns the one shot measured time in clock source ticks If the specified combination of edges has not yet been observed this value will be zero DIOO amp DIO1 both return the same value DIO _EF_READ_A F Returns the time in seconds 47 Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the S
147. mp black wires and make some sort of custom cable for your 5V power supply The supply range for specified operation is 4 75 to 5 25 volts whichis the same as the USB specification for voltage provided to a device Nonetheless we have seen some USB host ports providing a lower voltage If your USB host port has this problem add a USB hub with a strong power supply See information about Power over Ethernet PoE at the end of the Ethernet Section See related data in the General section of Specifications Normal retail units not OEM include a 5V 2A wall wart style power supply Compatibility Make Mfr Model No North America VA PSU US JXB0520B 1 B 28 Europe VA PSU EU1 JX B0520A 1 B See VA PSU UK1 JX B0520C 1 B Kingdom Australia JX B0520D 1 B China JX B0520H 1 B Note that the JX B0520 supply is rated for 0 to 40 deg C operation 10 0 SGND and GND SGND SGND is located near the upper left of the device This terminal has a self resetting thermal fuse in series with GND This is often a good terminal to use when connecting the ground from another separately powered system that could unknowingly already share a common ground with the T7 See the AIN DAC and Digital l O FIO EIO ClO MIO application notes for more information about grounding GND The GND connections available at the screw terminals and DB connectors provide a common ground for all LabJack functions All GND term
148. mum number of command response data sets 2 Table A1 4 and A1 5 provide typical stream related performance results The tabulated data is useful for determining what types of signals can be analyzed using a T7 The T7 is capable of streaming analog data at regular discrete intervals As a result various discrete time signal analysis tools can be utilized to interpret data The scan rates shown in table A1 4 are continuous over USB or Ethernet When using WiFi the device can acquire data at the fastest rates but transfer of data to the host is limited to about 4 ksamples second so the fastest stream rates cannot be maintained continuously In this case stream burst can be used rather than continuous stream where each stream is limited to a specified number 100 of scans that fits in the device s stream buffer Table A1 4 Stream scan rates for stream mode over various gain resolution index channel count combinations Maximum Scan Rate Gain Range 1 Channel 2 Channels 4 Channels 8 Channels Hz Hz Hz Hz 1V 4 1k 1 4k 585 0 1V 850 315 N S 0 01V N S N S N S 19 8k 9 0k 4 0k Resolution 10 1V 48k 3 6k 1 3k 550 Index 2 48k 400 N S N S N S N S N S N S 22k 9 9k 4 5k 2 4k Resolution l 10 1V 22k 1 4k 500 225 Index 3 l 100 0 1V N S N S NES N S 1000 0 01V N S N S N S N S 1 10V 11k 4 9k 2 2k 1 3k Resolution l 10 1V 11k 1 3k 45 N S Index 4 l 100 0 1V N S N S
149. n hold gt 256 samples 256 samples divided by 2 to get the loop size AKA the set of data to be written at a time size gt 128 samples Write 128 samples Write 128 to STREAM _OUTO_LOOP_SIZE Write 128 samples to STREAM_OUTO_BUFFER_F32 This should probably be done by array write which is much faster than writing values individually Write 1 to STREAM_OUTO_SET_LOOP 12 Loop while you have more sequential data to write Read STREAM _OUTO_BUFFER_STATUS If STREAM_OUTO_BUFFER_STATUS is 128 or greater write the next 128 samples Sleep for something like 1 scanRate to prevent unnecessary work for the hardware 3 2 1 Stream Out 3 2 2 Low Level Streaming Introduction Streaming is a data input output mode of the T7 that collects data at a constant rate and is capable of fast data collection and data output rates approximately 100 kHz Stream mode is complicated but can easily be executed using the LUM stream functions The rest of this section is about low level stream protocol For details on how to configure stream see Stream Mode The Basics There are three input output combinations of stream mode Stream in The T7 collects data and streams it to the host Stream out The T7 does not collect data but streams it out See Stream Out Stream in out The T7 collects data and streams it to the host It also streams data out The stream channels determine which of these modes are used Streamable channels may be either st
150. nd disable the probes SBUS_ALL_DATA_DIONUM 8 SBUS_ALL_CLOCK_DIONUM 9 SBUS_ALL_POWER_DIONUM 10 E103 0 E104 0 You can now read from SBUS11_TEMP SBUS11_RH for ProbeA values or SBUS12_TEMP SBUS12_RH for ProbeB values El 1050 SHT1x or SHT7x using individual data clock lines and DACO for power Say you connect an El 1050 and SHT71 as follows GND Ground black DACO Power red FIOO Data for El 1050 green FIO1 Clock for El 1050 white DACO Enable El 1050 brown FIO2 Data for SHT71 FIO3 Clock for SHT71 Since the El 1050 is tied to power it will always be enabled We can do that because we have assigned it dedicated DIO for data and clock The SHT71 does not have an enable Note that the SHT x datasheet shows an added 10k pull up resistor from Data to Power The LabJack has an internal 100k pull up that usually works but some applications might need the stronger 10k pull up and perhaps even a capacitor from Clock to GND near the sensor pins Write the following registers to configure and power the probes SBUSO_DATA_DIONUM 0 SBUSO_CLOCK_DIONUM 1 SBUS3_DATA_DIONUM 2 62 SBUS3_CLOCK_DIONUM 3 SBUS_ALL_POWER_DIONUM 9999 DACO 3 3 You can now read from SBUSO_TEMP SBUSO_RH for the El 1050 values or SBUS3_TEMP SBUS3_RH for the SHT71 values Note that the in the register names above can be about anything you want Say for the SHT71 you instead did SBUS7_DATA_DIONUM 2 SBUS7_CLOCK_DIONUM 3 Now if y
151. ne high and low relative to the clock source s count Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR typically 80M Divisor PWMFrequency Clock Frequency DIO_EF_CLOCK _ROLL_VALUE DutyCycle 100 DIO _EF_CONFIG_A DIO _EF_CONFIG_B DIO_EF_CLOCK _ROLL_VALUE Phase Offset 360 DIO _EF_CONFIG_A DIO_EF_CLOCK _ROLL_VALUE When the the count matches Value_B the DIO line will be set high When the count matches Value A the line will be set low Therefore Value_A minus Value_B controls the duty cycle CoreFrequency is always 80 MHz at this time but in the future some low power operational modes might result in different core frequencies The valid values for DIO_EF_CLOCK _DIVISOR are 1 2 4 8 16 32 64 or 256 and a value of 0 default equates to a divisor of 1 For more details about Clock Frequency and DIO_EF_CLOCK _DIVISOR see the DIO EF Clock Source section Configure DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 1 DIO _EF_ OPTIONS Bits 0 2 specify which clock source to use 000 for ClockO 001 for Clock1 and 010 for Clock2 All other bits reserved and should be set to 0 DIO _EF_CONFIG_A When the clock source s count matches this value the line will transition from high to low DIO _EF_CONFIG_B When the clock source s count matches this value the line will transition from low to high DIO _EF_CONFIG _B Not used DIO _EF_CONFIG _B Not used Update The duty cycle can be updated at any time To u
152. ng too close to VS With a 1000 ohm load noise increases noticeably at 4 4V and higher With a 330 ohm load noise increases noticeably at 3 7V and higher With a 100 ohm load noise increases noticeably at 2 7V and higher 3 For currents up to about 8mA this source impedance dominates the error due to loading For example if you load DACO with a 1000 ohm resistor from DACO to GND and set DACO to 3 0V the actual voltage at the DACO terminal will be about 3 0 1000 50 1000 2 86V For currents gt 8mA you increasingly get added droop due to the ability of the output buffer to drive substantial current close to the power rails 4 The output buffer will limit current to about 20mA and can maintain this value continuously without damage Take for example a 100 ohm resistor from DACO to GND with the internal source impedance of 50 ohms and DACO set to 4 5V A simple calculation would predict a current of 4 5 50 150 30mA but the output buffer will limit the current to 20mA A simple calculation taking into account only the voltage droop due to the internal 50 ohm resistance would predict a voltage at the DACO terminal of 4 5 100 50 100 3 0V but since the current is limited to 20mA the actual voltage at DACO would be more like 100 0 02 2 0V A 5 General Specs Supply The following table shows the supply voltage that is required by the T7 The USB hub or 5V USB adapter should fall within the acceptable range General Power Mecha
153. nical Supply Parameter Condition Min Typical Max Units Supply Voltage 4 75 5 25 Volts Supply Current No connected loads 8 1 250 mA Power Consumption The T7 has several power domains USB and Core speed are not yet ready user level control but have been included in the following table to show the capabilities of the device The values shown are typical 108 General Power Mechanical Power Core Speed Eth 1 Eth Linked AINs 80M ON Yes ON 80M ON Yes ON 80M ON Yes ON 80M ON No ON 80M OFF No ON 80M OFF No OFF 80M OFF No OFF 80M OFF No OFF 20M OFF No OFF 2M OFF No OFF 250k OFF No OFF WiFi ON ON OFF OFF OFF OFF OFF OFF OFF OFF OFF WiFi Linked LEDs USB 1 Draw mA 1 Ethernet and USB require that the core be running at least 20MHz 200pA and 100pA Current Sources General Power Mechanical Current Sources Parameter Condition Accuracy vs Cal Value 1 25 C Accuracy vs Nominal 1 25 C TempCo 200UA 2 25 C TempCo 10UA 2 25 C Maximum Voltage Min Yes ON ON 290 No ON ON 285 No ON ON 253 No ON ON 210 No ON ON 174 No ON ON 142 No OFF ON 105 No OFF OFF 79 No OFF OFF 23 No OFF OFF 8 8 No OFF OFF 8 1 Typical Max Units 0 1 0 2 5 20 ppm C 5 ppm C VS 2 0 volts 1 First spec is the accuracy compared to the value stored during calibration The second spec is the accuracy compared to the nominal value e g 200 0 pA for the 200UA source 2 Tempco varies str
154. nnect the T7s and your laptop to the hotspot Figure 5 demonstrates how to use a Mobile Hotspot with a laptop and T7 The Laptop acts as the host for the T7s and can get internet through the cell phone s cellular network connection 26 Lm Internet og T7 PRO Wireless device T7 PRO Dee ai Wireless device nents er Host Mobile Hotspot Name Johns Cell y Encryption WPA2 Ov OE Wireless A kiii Johns Cer Cell Network 3G 4G Figure 5 Laptop and Mobile Hotspot The cell phone creates the wireless network AP Note that 3G and 4G depend on your cell provider Unlimited data plans often throttle your connection after the data limit is exceeded Due to the data limits on cell networks we advise caution for internet users on these setups Figure 3 is still a good option to create a wireless local network but the data will usually stay on the host computer 7 0 WiFi 8 0 LEDs STATUS green LED The status LED indicates when the T7 is performing autonomous tasks such as running a Lua script or streaming The LED will blink when a script accesses a modbus register or when a stream packet is prepared The status LED also activates during firmware updates to indicate various stages of the process refer to the Combined LED Activity section COMM yellow LED The primary indicator for packet transfer If the T7 is communicating the COMM LED will be blinking A few blinks after connecting
155. ns e DB Edge The DB Edge has 2 D sub type connectors a DB15 and DB37 The DB15 has 12 digital O The DB37 has the same I O as the screw terminals plus additional analog inputs and digital I O for a total of 14 analog inputs 2 analog outputs 2 fixed current sources and 11 digital O 15 WoD Y DLefqe MMM ZL Perge Figure 4 1 Enclosure amp Connectors USB Can be used for communication Power is always provided through this connector Ethernet 10 100Base T Ethernet connection can be used for communication WiFi T7 Pro only 2 4 GHz 802 11 b g WiFi connection can be use for communication LEDs The Power and Status LEDs convey different information about the device VS All VS terminals are the same These are outputs that can be used to source about 5 volts GND SGND All GND terminals are the same SGND has a self resetting thermal fuse in series with GND 10UA 200UA Fixed current sources providing 10uA 200pA at a max voltage of about 3 volts FIO EIO CIO MIO These are the 23 digital VO and are also referred to as DIOO DIO22 Besides basic digital V O operations some of these terminals can also be configured with Extended Features frequency input pwm output etc and all can be configured for various serial protocols I2C serial SPI serial SBUS serial E 1050 SHT sensors 1 Wire serial and Asynchronous serial AIN AINO AIN13 are the 14 analog inputs DAC DACO amp DAC 1 are the 2 analog outp
156. nt from 0 999999 with each count equal to 0 1 microseconds and thus a max period of about 0 1 seconds Advanced If CLOCKO is enabled and CLOCK1 and CLOCK2 are disabled you can still select CLOCK1 or CLOCK2 as the source for a DIO EF channel CLOCK1 CLOCK2 are actually the LSW amp MSW of CLOCKO The frequency of CLOCK1 is the same as CLOCKO If DIO_EF_CLOCKO_ROLL_VALUE is gt 2416 then the frequency of CLOCK2 is CLOCKO_freq divided by the modulus remainder portion of CLOCKO_ freq 216 If CLOCKO_ROLL_VALUE 1 is lt 2416 then the frequency of CLOCK2 is 0 CLOCK1_ROLL_VALUE is the modulus of CLOCKO_ROLL_VALUE 1 2416 and CLOCK2_ROLL_VALUE is the quotient integer portion of CLOCKO_ROLL_VALUE 1 2 16 Digital EF Clock Source Name Start Address Type Access Default DIO_EF_CLOCKO_ENABLE 44900 UINT 16 R W DIO_EF_CLOCKO_DIVISOR 44901 UINT16 R W DIO_EF_CLOCKO_OPTIONS 44902 UINT32 R W DIO_EF_CLOCKO_ROLL_VALUE 44904 UINT32 R W DIO_EF_CLOCKO_COUNT 44908 UINT32 R DIO_EF_CLOCK0_ENABLE 1 enabled 0 disabled Must be disabled during configuration DIO_EF_CLOCKO_DIVISOR Divides the core clock Valid options 1 2 4 8 16 32 64 256 DIO_EF_CLOCK0_OPTIONS Bitmask bit0 1 use external clock All other bits reserved 39 DIO_EF_CLOCK0_ROLL_VALUE The number of clock pulses to count before starting over at zero The clock pulses counted are those after the divisor DIO_EF_CLOCK0_COUNT Current tick count of this clock W
157. ntax errors and undefined variables no longer reset the T7 Itis highly recommended to use FW 1 0134 or newer for scripting Starting with FW 1 0134 the File IO system can create files on the SD card instead of just using existing files Starting with FW 1 0128 reading the RTC returns the correct time Added the ability to run a script when the T7 starts up New firmware solves a bug with converting constants during compilation Starting with FW 1 0059 a jumper between SPC and FIO2 will turn off the script at startup This hardware level restore defaults feature is very helpful if the currently loaded Lua script is constantly resetting the device The T7 can execute Lua code to allow independent operation This can be used to collect data without a host computer or perform complex tasks producing simple results that a host can read And probably other things we haven t thought of Getting Started 1 Get or launch Kipling v3 2 Make sure your T7 has firmware v1 0100 or later Minimum of 1 0134 is recommended 90 Device informaton gt eo 8 Dashboard Example Name Anaiog inputs Anziog Outputs Regster Maru Network Settings Global Configuration Power Up Defauts Device Updater 1 devices conmected Serxi Ocwres 3 Launch Kipling v3 and navigate to the Lua Script Debugger Connect your T7 to your computer and press run Open the Get Device Temperature example and click Run Now click Stop Note that clicking sto
158. o determine real time after reboot The system time is stored in seconds since 1970 also known as the Epoch amp Unix timestamp Remarks As of this writing the T7 Pro ships with a 2GB SD card RTC and battery battery holder installed The T7 has none of these but does have the socket installed to hold a micro SD card The T7 Pro RTC can be read a few different ways Read the system time in seconds with address 61500 or get a simple calendar time representation by reading six consecutive addresses starting with address 61510 Change the system time by writing a new timestamp in seconds to address 61504 To time events faster than 1 second apart itis possible to read the CORE_TIMER address 61520 and see how it changes from second to second To access the core timer value in Lua scripts use the LJ Tick function RTC Registers Name Start Address Type Access Default RTC_TIME_S 61500 UINT32 R RTC_SET_TIME_S 61504 UINT32 Ww RTC_SET_TIME_SNTP 61506 UINT32 Ww RTC_TIME_CALENDAR 61510 UINT 16 R RTC_TIME_S Read the current time on the RTC in seconds since Jan 1970 aka Epoch or Unix time RTC_SET_TIME_S Write a new timestamp to the RTC in seconds since Jan 1970 aka Epoch or Unix timestamp RTC_SET_TIME_SNTP Write any value to instruct the T7 to update its clock from a SNTP server RTC_TIME_CALENDAR Read six consecutive addresses of type UINT 16 starting with this address The result will be in year month day hour minute
159. of the file folder 4 Write a value of 1 to FILE_IO_DIR_NEXT The error returned indicates whether anything was found No error 0 indicates that there are more items gt go back to step 2 FILE_lIO_NOT_FOUND 2960 indicates that there are no more items gt Done Change the CWD 1 Find from the list of items a directory to open e g DIR1 Directories can be parsed out of the list of items by analyzing their FILE_IO_ATTRIBUTES bitmask If bit 1 of the FILE_IO ATTRIBUTES bitmask is set then the item is a directory 2 Write the directory name length in bytes to FILE_IO_NAME_WRITE_LEN ASCII so each char is 1 byte also don t forget to add 1 for the null terminator 3 Write the directory string converted to an array of bytes with null terminator to FILE_IO_NAME_WRITE array size length from step 2 4 Write a value of 1 to FILE_IO_DIR_CHANGE 5 Done Optionally get a list of items in the new CWD Get disk size and free space 1 Read FILE_lIO_ DISK_SECTOR_SIZE FILE_IO DISK_SECTORS_PER_CLUSTER FILE_IO_DISK_TOTAL_CLUSTERS FILE_lIO_DISK_FREE_CLUSTERS Disk operations are performed when you read sector size all others are snapshots 2 Total size sector_size sectorsPerCluser Total_Clusters Free size sector_size sectorsPerCluser free_Clusters Read a file Write the length of the file name to FILE_IOQ_NAME_WRITE_LEN add 1 for the null terminator Write the name to FILE_IO_NAME_WRITE with null terminator Read
160. of the wired Ethernet module WIFI_MAC The MAC address of the WiFi module SERIAL_NUMBER The serial number of the device DEVICE_NAME_DEFAULT The current device name Up to 49 characters cannot contain periods There are several other useful device control registers listed below These registers have device wide impact Miscellaneous Device Registers Name Start Address Type Access Default CORE_TIMER 61520 UINT32 R SYSTEM_REBOOT 61998 UINT32 Ww WAIT_US_BLOCKING 61590 UINT32 R W CORE_TIMER Internal 32 bit system timer running at 1 2 core speed thus normally 80M 2 gt 40 MHz SYSTEM_REBOOT Issues a device reboot Must write 0x4C4Axxxx where xxx is number of 50ms ticks to wait before reboot WAIT_US_BLOCKING Delays for x microseconds Range is 0 100000 5 0 USB Communication Protocol Modbus TCP Connector Type USB B Receptacle Compatible USB 1 1 Max Cable Length 5 meters Max Packet Size 64 bytes packet Power is supplied to the T7 through the 5V USB connection If the Ethernet or Wi Fi connection is preferred for communication use the provided AC USB 5V adapter for power When used for communication itis a full speed USB connection compatible with USB version 1 1 or higher Interface Talk to the T7 Modbus TCP is the protocol used by all connections on the T7 USB Ethernet WiFi If you want to handle USB communication yourself find open write read close you can use the Modbus protocol Most custo
161. oint 3 OUT is not supported by the firmware and should never be used All commands should always be sent on Endpoint 1 and the responses to commands will always be on Endpoint 2 Endpoint 3 is only used to send stream data from the T7 to the host 6 0 Ethernet Communication Protocol Modbus TCP Connector Type RJ 45 Socket Cat 5 Compatible 10 100Base T PoE Compatible Nol Max Cable Length 100 meters typical Max Packet Size 1040 bytes packet TCP 64 bytes packet UDP Overview The T7 has a 10 100Base T Ethernet connection This connection only provides communication so power must be provided through the USB connector Refer to this WiFi and Ethernet tutorial to get started Note If you need a wireless connection instead of Ethernet you can buy a wireless bridge and connect the T7 to the bridge and the bridge will connect to the wireless network Find more information in the Convert Ethernet to WiFi App Note Config _ DEFAULT Registers versus Status Registers The first list below is the config registers These are generally written to configure default Ethernet settings but can also be read Configure the Ethernet parameters in Kipling software Any register with DEFAULT at the end is non volatile Whatever value you write to a DEFAULT register will be retained through a reboot or power cycle The second list below consists of read only registers to read the status of Ethernet For example if you write ETHERN
162. om ADC reference ground An easy way to do this on the CB37 is to use GND as the current source sink and use AGND as the reference ground This works well for passive sensors no power supply such as a thermocouple where the only ground current is the return of the input bias current of the analog input EB37 Experiment Board The EB37 experiment board connects to the DB37 connector and provides convenient screw terminal access Also provided is a solderless breadboard and useful power supplies The EB37 is designed to connect directly to the DB37 but can also connect via a 37 line 1 1 male female cable OEM The OEM T7 has a separate header location to bring out the same connections as the DB37 connector This OEM header location is labeled J3 The J3 holes are always present but are obstructed when the DB37 connector is installed Find the pinout and other OEM information for J3 in OEM Versions 17 0 DB15 77 Number of Pins 15 Screw type 4 40 Contacts Gold coated Form factor D Sub The DB15 connector brings out 12 additional digital VO It has the potential to be used as an expansion bus where the 8 EIO are data lines and the 4 CIO are control lines EIO0O CIO3 can also be addressed as DIO8 DIO19 EIOO EIO7 aka DIO8 DIO15 CIOO CIO3 aka DIO16 DIO19 The CB15 is a connector board that provides convenient screw terminals for the DB15 lines but the CB15 is not required to access VO onthe DB15 Any method you see fit can be
163. ongly with temperature See the charts in the 200UA and 10uA datasheet section VM VM General Power Mechanical VM VM Parameter Condition Typical Voltage No load 2 5 mA Maximum Current System Clock General Power Mechanical Clock Parameter Condition Min Clock Error 25 C 10 to 60 C 40 to 85 C Mechanical General Power Mechanical Mechanical Parameter Condition USB Cable Length Operating Temperature Screw Terminal Wire Gauge Mounting Screws Enclosure Screws x6 wood screw sizes PH1 pan head Min Typical Max 13 12 2 5 Units volts volts mA Typical Max Units Min 40 20 ppm 50 ppm 100 ppm Typical Max Units 2 5 85 26 14 6 8 4 20 x 5 8 meters C AWG Phil 1 109 Appendix B Enclosure and PCB Drawings See below drawings of the T7 The square holes on the back of the enclosure are for DIN rail mounting adapters TE Connectivity formerly Tyco part TKAD or Newark PN 50F2979 CAD drawings of the T7 enclosure are attached to the bottom of this page DWG DXF IGES STEP LABJACK T7 MECHANICAL CONNECTIONS DIMENSIONS IN INCHES yg KENSINGTON LOCK PORT 4 125 7 40 WALL MOUNT DIN RAIL MOUNT 5 750 15000 GOO 0600 OOOO 0000 OOO SCREW MOUNT 0 17 8 SCREWS 110 LABJACK T7 ELECTRICAL CONNECTIONS C Pl o B o Ol iO K S000 0000 0000 DIGITAL I O DB37 MIXED I O SCREW TERMINAL
164. ons are thread priority logging to file updating the screen and other programs running on the machine 2 The number of command response data sets used to retrieve stream data from the T7 depends on the number of data points allowed to accumulate in the in the T7 s stream buffer A 2 Digital I O General Info Below you can find information regarding the T7 s Digital Input Output lines 102 Parameter Conditions Min Typical Max Units Low Level Input Voltage 0 3 0 5 Volts High Level Input Voltage 2 64 5 8 Volts Maximuminput Voltage 1 FIO 10 10 Volts EIO CIO MIO 6 6 Volts Output Low Voltage 2 No Load 0 01 Volts FIO Sinking 1 mA 0 55 Volts ElO CIO Sinking 1 mA 0 15 Volts ElO CIO Sinking 5 mA 0 75 Volts Output High Voltage 2 No Load 3 3 Volts FIO Sourcing 1 mA 2 75 Volts ElO CIO Sourcing 1 mA 3 15 Volts ElO CIO Sourcing 5 mA 2 6 Volts Short Circuit Current 2 FIO 6 3 mA EIO CIO MIO 22 9 mA Output Impedance 2 FIO 550 Q EIO CIO MIO 180 Q 1 Maximum voltage to avoid damage to the device Protection works whether the device is powered or not but continuous voltages over 5 8 volts or less than 0 3 volts are not recommened when the T7 is unpowered as the voltage will attempt to supply operating power to the T7 possibly causing poor start up behavior 2 These specifications provide the answer to the question How much current can the digital I O sink or source For instance if EIOO is configured as o
165. or Config_B will take effect when Config_C is written Read DIO _EF_READ_A The number of pulses that have been completed DIO EF READ _B The target number of pulses Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A_AND_RESET Reads number of pulses that have been completed Then restarts the pulse sequence Example First configure a clock source to drive the pulse generator Assuming the core frequency is 80 MHz writing the following registers will produce a 1 kHz pulse frequency DIO_EF_CLOCK0_DIVISOR 8 DIO_EF_CLOCK0_ROLL_VALUE 10000 DIO EF CLOCKO ENABLE 1 43 Thus ClockOFrequency 80 MHz 8 10 MHz and PWMFrequency 10 MHz 10000 1 kHz Now that we have a clock to work with we can configure our pulse DIOO_EF_ENABLE 0 DIOO 0 set DIOO to output low DIOO_EF_INDEX 2 pulse out type index DIOO_EF_CONFIG_A 2000 high to low count DIOO_EF_CONFIG_B 0 II low to high count DIOO_EF_CONFIG_C 5000 number of pulses DIOO_EF_ENABLE 1 Thus duty cycle 100 2000 0 10000 20 The LabJack will now output 5000 pulses over 5 seconds at 20 duty cycle 13 1 5 Frequency In Capable DIO FIO
166. ot a good idea For example when a USB device resets it takes a little time for USB to re enumerate and software to be able to talk to the device again so you could getina situation where the device keeps resetting so often that you can t start talking to it again This might require using the reset to factory jumper FIO2 lt gt SPC Watchdog Registers Name Start Address Type Access Default WATCHDOG_ENABLE_DEFAULT 61600 UINT32 R W 0 WATCHDOG_ADVANCED_ DEFAULT 61602 UINT32 R W 0 WATCHDOG_TIMEOUT_S_ DEFAULT 61604 UINT32 R W 0 WATCHDOG_STARTUP_DELAY_S_ DEFAULT 61606 UINT32 R W 0 WATCHDOG_STRICT_ENABLE_DEFAULT 61610 UINT32 R W 0 WATCHDOG_STRICT_KEY_DEFAULT 61612 UINT32 R W 0 WATCHDOG _STRICT_CLEAR 61614 UINT32 WwW 0 WATCHDOG_RESET_ENABLE_DEFAULT 61620 UINT32 R W 0 WATCHDOG _DIO_ENABLE_DEFAULT 61630 UINT32 R W 0 WATCHDOG _DIO_STATE_DEFAULT 61632 UINT32 R W 0 WATCHDOG_DIO_DIRECTION_DEFAULT 61634 UINT32 R W WATCHDOG_DIO_INHIBIT_DEFAULT 61636 UINT32 R W 0 WATCHDOG_DACO_ENABLE_DEFAULT 61640 UINT32 R W 0 WATCHDOG_DACO_DEFAULT 61642 FLOAT32 R W 0 WATCHDOG_DAC1_ENABLE DEFAULT 61650 UINT32 R W 0 WATCHDOG_DAC1_DEFAULT 61652 FLOAT32 R W 0 WATCHDOG_ENABLE_DEFAULT Write a 1 to enable the watchdog or a 0 to disable The watchdog must be disabled before writing any of the other watchdog registers except for WATCHDOG_STRICT_CLEAR WATCHDOG_ADVANCED_DEFAULT A single binary encoded value where each bit is an advanced option If bit 0 is set I
167. ou read SBUS7_TEMP SBUS7_RH the LabJack will use FIO2 3 to talk to the sensor A possible problem though is that the LabJack will also control FIO7 as an enable It will set FIO7 to output high talk to the sensor and then set FIO7 to output low The way to prevent control of an enable line is to use a that is the same as the data or clock line 13 5 1 Wire This document assumes that the reader has a basic understanding of the 1 wire protocol 1 Wire is a serial protocol that uses only one data line Multiple devices can be connected to a single 1 Wire bus and are differentiated using a unique 64 bit number referred to as ROM Hardware Devices on the 1 wire bus need to be connected to GND Vs and the data line DQ DQ also needs a pullup resister of 2 2 4 7 kQ to Vs FIO lines can not be used for 1 Wire They have too much impedance which prevent the signal from reaching logic thresholds The T7 supports a DPU dynamic pull up A dynamic pull up uses an external circuit such as a transistor to provide extra power to the DQ line at proper times This can be helpful if the line is large or you are using parasitic power Configuration ONEWIRE_DQ_DIONUM This is the DIO line to use for the data line DQ ONEWIRE_DPU_DIONUM This is the DIO line to use for the dynamic pullup control ONEWIRE_OPTIONS A bit mask for controlling operation details bit 0 Reserved write 0 bit 1 Reserved write 0 bit 2 DPU Enable Write 1 to enable
168. p clears the Lua VM so even if a program has concluded it is still necessary to press the stop button 4 Try out some other examples Running a script when the T7 powers up The T7 can be configured to run a script when it powers on or resets Typically scripts are tested for a while with the Run Stop button while viewing the debug output in the console Then once everything is working correctly users will enable the script at startup and close Kipling gt a Eo D ve S Flas Example Save Script to Flash creen 1 Click Save Script to Flash gt amp W B Example Name Enable Script at startup 2 Click Enable Script at Startup Now when the T7 is powered on or reset it will run your script Learning more about Lua Learning Lua is very easy There are good tutorials on Lua org as well as several other independent sites If you are familiar with the basics of programming such as loops and functions then you should be able to get going just by looking at the examples If you have suggestions or comments please email support labjack com Not sure how to accomplish a goal Shoot us an email We will make a new example and add functions as necessary Some things to keep in mind while writing Lua for the T7 e Try to keep names short String length directly affects execution speed and code size 91 e Based on eLua 0 8 which is based on Lua 5 1 4 e Lua supports muti return D T LJ TickDelta LT Both D
169. pdate write the new value to Config_A then Config_B The value written to Config_Ais stored until Config_B is written After writing Config_B the new value will be loaded at the start of the next period Updates are glitch less unless switching from a very high to very low duty cycle or a very low to very high duty cycle DIO _EF_CONFIG_A Values written here will set the new falling position The new value will not take effect until Config_B is written DIO _EF_CONFIG _B Values written here will set the new rising position When Config_B is written the new Config_A is also loaded Read No information is returned by PWM Out with Phase Reset Reset has no affect on this feature 13 1 4 Pulse Out 42 Capable DIO FIOO FIO2 FIO3 FIO4 FIO5 Requires Clock Source Yes Index 2 Pulse output will generate a specified number of pulses The high time and the low time are specified relative to the clock source the same way as PWM with Phase Control Clock Frequency CoreFrequency DIO_EF_CLOCK _DIVISOR I typically 80M Divisor PulseOutFrequency Clock Frequency DIO_EF_CLOCK _ROLL_VALUE DutyCycle 100 DIO _EF_CONFIG_A DIO _EF_CONFIG_B DIO_EF_CLOCK _ROLL_VALUE ifA gt B For the common case of CoreFrequency 80 MHz and Config B fixed at 0 we can rewrite these as PulseOutFrequency 80M DIO_EF_CLOCK _DIVISOR DIO_EF_CLOCK _ROLL_VALUE DutyCycle 100 DIO _EF_CONFIG_A DIO_EF_CLOCK _ROLL_VALUE and thus for 50 duty
170. ppen and return the temperature of the remote end of the thermocouple If the remote end is at room temperature you should read about 298 degrees K For more information see the Thermocouples Application Note and its T7 specific child page 14 1 2 Offset and Slope Index 1 The T7 AIN extended feature system can automatically add a slope and a offset to analog readings the results of which can be read through the AIN EF registers Configuration Registers CONFIG_D Custom slope to be applied to the analog voltage reading Default is 1 00 CONFIG_E Custom Offset to be applied to the analog voltage reading Default is 0 00 Result Registers READ_A returns measured volts slope offset Example First write some values to configure the AIN EF for AIN3 AIN3_EF_INDEX 1 II feature index for type K thermocouple AIN3_EF_CONFIG_D 2 0 II slope AIN3_EF_CONFIG_E 0 5 II offset Now each read of AIN3_EF_READ_Awill cause a new measurement to happen and return 2 0 volts 0 5 14 1 3 RTD BETA Index 40 42 AIN Extended Features can compute the temperatures of a resistance temperature detector First the resistance of the RTD is determined then the rational polynomial technique is used to calculate the temperature that resistance corresponds to There are 2 general supported methods to determine the resistance of the RTD current source or voltage divider Current source Resistance is calculated as R V I V is the voltage
171. ption 1 or 2 For more information on how to setup a WiFi network and some basic troubleshooting steps see the Basic Networking amp Troubleshooting App Note Km e Internet T7 PRO Pa Wireless device Modem Fa ain a ee Host option 1 Wireless Router Name Office WiFi Encryption WPA PSK LE Desktop f Host option 2 Wreless A reais Office WiFi Ethernet i Figure 1 Most common configuration for a home or small office network In a slightly larger network there may be more computers and several wireless networks wireless access points APs Figure 2 demonstrates a medium sized network where there are two APs the Wireless Router creates one and the Wireless Access Point creates another The Wireless Access Point might be on the manufacturing floor outdoors in the lab etc Note that it s possible to control the T7s using any of the host computer options 1 3 Modem a ry x Desktop 5 P a sae Host option 2 E 7 _ Hast opten 3 Wireless Router a ie Name Office WFT Eamon Wn saa GEES SwitchHub ae uae P Wireless device 25 Figure 2 A medium sized office network with a secondary wireless network AP for other devices It s possible to communicate with T7 Pros using only a laptop and WiFi as shown in figure 3 and figure 4 Simply configure the laptop to create a wireless network wireless access point AP Windows 7 and other new operating sy
172. r 3 The third parameter is the data type These numbers match the LJM constants in LabJackM h Parameter 4 The fourth parameter tells the T7 how to convert the value to a string Example SN R 60028 2 1 Here we are reading from address 60028 serial number data type is 32 bit unsigned integer and the string format is also 32 bit unsigned integer The resulting string is SN 470010531 ReST The T7 will respond to ReST commands The command format is modbus followed by several parameters direction read or write modbus address length number of registers format Formatindex value X XX for writes only custom string The custom string is a printf instruction that will be used to change the result string is formatted Write Example 96 modbus write 1000 length 2 amp format 2 amp value 2 7 Read Example modbus read 0 length 2 amp format 2 amp custom 0 6f MIMEs At the moment only a handful of MIMEs are supported e htm e html e js png e css Device Name When both the T7 and the computer requesting a web page are on the same network the NBNS can be used instead of an IP Either the IP address or the device name followed by a can be used to connect to the T7 Examples 192 168 0 131 my_t7_0531 Uploading To send web pages to the T7 they must be packaged and then loaded into flash Below are two proof of concept programs One to package webpages and another to load them onto the T7 The funct
173. r index or reference signal which supplies a single pulse per revolution This single pulse is used for precise determination of a reference position The T7 supports resets according to this reference signal Z phase will reset the the count when a high state is detected on the specified DIO line If set to one shot mode Z phase will clear the count only once If the reference pulse is wider than A and B pulses consider using the Conditional Reset feature instead of Z phase Configure Configuring the T7 for quadrature requires configuring two DIO The two lines must be an adjacent even odd pair FIO0 1 FlO2 3 and FIO6 7 are valid pairs The even IO line will be phase A and the odd will be phase B DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 10 DIO _EF_OPTIONS Not used DIO _EF_CONFIG_A Z phase control 0 Z phase off 1 Z phase on 3 Z phase on in one shot mode DIO _EF CONFIG _B Z phase DIO number DIO _EF_CONFIG_C Not used DIO _EF_CONFIG_D Not used Update No update operations can be performed with Quadrature In Read DIO _EF_READ_A Returns the current count as a signed 2 s complement value DIO _EF_READ_B Returns the number of detected errors DIO _EF_READ_A F Starting with firmware 1 0114 READ_A_F will return the count in a single precision float float32 Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integ
174. re PWM measure Edge capture amp compare High speed counter Software counter Software counter w debounce Quadrature Input Easy Frequency Input Analog Input Extended Features e User Defined Slope amp Offset e Thermocouple E J K R and T calculations e RTDs Other highlights e Built In CJC Temperature Sensor e Watchdog system e Field Upgradable Firmware e Programmable Startup Defaults e LJTick Compatible Fixed Current Outputs e 200 pA e 10A 1 2 Family Variants Info T7 vs T7 Pro The T7 Pro has all features of the normal T7 with the following added e Wireless Ethernet 802 11b g e 24 bit Low Speed ADC for 22 Bit Effective Resolution e Battery Backed Real Time Clock to assist Scripts Also see the block diagram in the hardware overview section T7 OEM and T7 Pro OEM There is also an OEM version of the T7 and T7 Pro The OEM versions are the same in terms of features but the enclosure and most connectors are not installed on the OEM versions which allows customers to easily configure as needed See AppendixA OEM Versions for details 2 0 Installation 1 First install LabJack software and driver bundle based on your operating system T7 Digit Devices Windows Installer 79 09MB 2015 03 10 21 25 details I macosx Package 2 86MB 2015 02 10 12 56 details A Linux 32 bit Package 1 44MB 2014 07 29 15 57 A Linux 64 bit Package 1 45MB 2014 07 29 15 56 LinuxARMvz details Pa
175. reading from this AIN EF channel configure this channel as differential if needed and lis the value of the current source This feature can read the stored factory calibration value of the 200UA or 10UA source can use a specified constant value in amps for the current source or can measure the voltage across a fixed shunt 72 resistance which is in series with the RTD to determine current For the latter you must specify the resistance of the shunt in ohms and the AIN channel to use to measure the voltage across the shunt configure this channel as differential if needed Voltage divider Resistance is calculated as R Vexc V R2 V V is the voltage reading from this AIN EF channel configure this channel as differential if needed R2 is the fixed voltage divider resistor that goes from the RTD to GND and you must specify the value inohms Vexc is the excitation voltage for the voltage divider You either specify this value in volts or it is measured ona specified AIN channel RTD feature index values 40 PT100 41 PT500 42 PT1000 Configuration Registers CONFIG_A RTD_Options Bitmask containing additional options Bits 0 and 1 change the units of the output of the calculations The default is kelvin Bit 0 1 Report in C Bit 1 1 Report in F CONFIG_B Excitation Type This option tells the T7 how the RTD is connected There are several options 0 Current source 200 pA use factory cal value
176. ream in or stream out Executing stream mode involves the following Stream setup Stream start Stream in data collection Stream out buffer updates See Stream Out Stream stop Note that spontaneous stream mode is the mode where the T7 sends data without a Modbus command request Spontaneous stream mode is not compatible with WiFi T7 connections WiFi T7 stream requires Command Response stream Please leave a comment if you need low level documentation for WiFi Command Response stream Setup Stream setup requires configuration of the registers that LJM_eStreamStart takes care of and some others Stream Configuration Name Start Address Type Access Default STREAM_SCANRATE_HZ 4002 FLOAT32 R W 0 STREAM_NUM_ADDRESSES 4004 UINT32 R W 0 STREAM_SAMPLES_PER_PACKET 4006 UINT32 R W 0 STREAM_SETTLING_US 4008 FLOAT32 R W 0 STREAM_RESOLUTION_INDEX 4010 UINT32 R W 0 STREAM_BUFFER_SIZE_ BYTES 4012 UINT32 R W 0 STREAM_CLOCK_SOURCE 4014 UINT32 R W 0 STREAM_AUTO_TARGET 4016 UINT32 R W 0 STREAM_NUM_SCANS 4020 UINT32 R W 0 STREAM_EXTERNAL_CLOCK_DIVISOR 4022 UINT32 R W 0 STREAM_ENABLE 4990 UINT32 Ww 13 STREAM_SCANLIST_ADDRESS 0 127 4100 UINT32 R W 0 STREAM_SCANRATE_HZ The number of times per second that all channels in the scanlist will be read SampleRate NumChannels ScanRate Has no effect when using and external clock STREAM_NUM_ADDRESSES The number of entries in the scanlist STREAM_SAMPLES_PER_PACKET Specifies the number of d
177. red as 16 bit values only In the normal case of an analog input such as AINO the 16 bit binary value is actually is what is transferred and LJM converts it to a float on the host using the cal constants that LUM reads in before starting the stream Some registers in the list above e g DIO4_EF_READ_A have 32 bits data When streaming a register that produces 32 bit data the lower 16 bits LSW will be returned and the upper 16 bits MSW will be saved in STREAM _DATA_CAPTURE_16 To get the full 32 bit value add STREAM _DATA_CAPTURE_16 to the stream scan list after any applicable register then combine the two values in software LSW 65536 MSW Note that it would not be unusual to put STREAM_DATA_CAPTURE_ 16 in multiple locations in the scan list The following describes the Modbus registers related to stream mode Note that the LJM library provides special functions for stream so most users will not use the following registers Stream Configuration Name Start Address Type Access Default STREAM_SCANRATE_HZ 4002 FLOAT32 R W 0 STREAM_NUM_ADDRESSES 4004 UINT32 R W 0 STREAM_SAMPLES_PER_PACKET 4006 UINT32 R W 0 STREAM_SETTLING_US 4008 FLOAT32 R W 0 STREAM_RESOLUTION_INDEX 4010 UINT32 R W 0 STREAM_BUFFER_SIZE_ BYTES 4012 UINT32 R W 0 STREAM_AUTO_TARGET 4016 UINT32 R W 0 STREAM_NUM_SCANS 4020 UINT32 R W 0 STREAM_ENABLE 4990 UINT32 Ww STREAM_SCANLIST_ADDRESS 0 127 4100 UINT32 R W 0 STREAM_SCANRATE_HZ The number of times per second th
178. requencies 0 08718 870 kHz 12C Characteristics Clock Frequencies 9 3 472 kHz 103 A 3 Analog Input General Info Below you can find general information regarding the T7 s Analog input lines For further details consult the Noise and Resolution subsection Conditions Min Typical Max Units Typical Input Range 1 Gain 1 10 5 10 1 Volts Max AIN Voltage to GND 2 Valid Readings 11 5 11 5 Volts Max AIN Voltage to GND 3 No Damage 20 20 Volts Input Bias Current 4 20 nA Input Impedance 4 1 GQ Source Impedance 4 1 kQ Integral Linearity Error Gain 1 10 100 0 01 FS Gain 1000 0 1 FS Absolute Accuracy Gain 1 10 100 0 01 FS Gain 1000 0 1 FS Temperature Drift 15 ppm C Noise Peak To Peak See A 3 1 lt 1 uV Effective Resolution RMS See A 3 1 22 bits Noise Free Resolution See A 3 1 20 bits 1 Differential or single ended 2 This is the maximum voltage on any AIN pin compared to ground for valid measurements on that channel For single ended readings on the channel itself inputs are limited by the Typical Input Range above and for differential readings consult the signal range tables in Appendix 3 2 Further if a channel has over 13 0 volts compared to ground readings on other channels could be affected Because all even channels are on 1 front end mux and all odd channels on a 2nd front end mux an overvoltage gt 13V on a single channel will generally affect only even or only odd channels 3 M
179. rite the direction of the 8 bits of FIO in a single binary encoded value 0 Input and 1 Output The upper 8 bits of this value are inhibits EIO_DIRECTION Read or write the direction of the 8 bits of EIO in a single binary encoded value 0 Input and 1 Output The upper 8 bits of this value are inhibits CIO_DIRECTION Read or write the direction of the 4 bits of CIO in a single binary encoded value 0O Input and 1 Output The upper 8 bits of this value are inhibits MIO_DIRECTION Read or write the direction of the 3 bits of MIO in a single binary encoded value 0 Input and 1 Output The upper 8 bits of this value are inhibits For example To set FlO1 7 to output write a value of Ox01FF to FIO_DIRECTION FIOO is the least significant bit so to prevent modification the corresponding inhibit bit is set with 0x01 in the most significant byte The least significant byte is OxFF which is all 8 bits of FIO set to output Alternative DIO Registers The DIO registers are the same thing as EIO FIO CIO and MIO but with a more intuitive naming scheme and a more compact register allotment DIO Registers Name Start Address Type Access Default DIO 0 22 2000 UINT16 R W DIO_STATE 2800 UINT32 R W DIO_DIRECTION 2850 UINT32 R W DIO_INHIBIT 2900 UINT32 R W DIO 0 22 34 Read or set the state of 1 bit of digital O Also configures the direction to input or output Names Addresses DIOO DIO1 DIO2 Show All 2000 2001 2002 Show All DIO_ST
180. rst row of data in table A1 4 highlighted The reported scan rate is simply the maximum sample rate divided by the number of channels in the scan list within 10 Note that the sample rate and scan rate for a single channel stream are equal since the NumAddresses 1 The maximum scan rate decreases at resolution index and range settings other than listed above simply because analog conversions take longer to complete Table A1 5 illustrates how analog conversion times increase at different resolution index and range settings Table A1 5 Stream performance characteristics for single channel stream over various gain and resolution index combinations 101 Resolution Peak to Peak Interchannel Index Noise Delay 16 bit counts us Gain Range 1 10V 1 3 0 15 2 2 0 25 3 41 5 45 4 1 0 90 5 1 0 170 6 0 5 340 7 0 5 675 8 0 5 1 335 Gain Range 10 1V 1 44 5 210 2 3 0 220 3 2 0 545 4 41 5 585 5 1 0 1 200 6 0 5 2 415 7 0 5 2 750 8 0 5 3 415 Gain Range 100 40 1V 1 20 0 1 045 2 14 0 2 105 3 N S N S 4 N S N S 5 N S N S 6 N S N S 7 N S N S 8 N S N S Gain Range 1000 0 01V 1 N S N S 2 N S N S 3 N S N S 4 N S N S 5 N S N S 6 N S N S 7 N S N S 8 N S N S N S indicates settings are not currently supported in stream mode Notes 1 Various software issues need consideration when implementing a feedback loop that executes at the desired time interval Some considerati
181. s SDS101 PRW2 F 15 SN13 1 FCI 10090099 S374VLE FCI D37S33E4GVOOLF Sullins Connector Solutions SDS101 PRW2 F37 SN83 6 J2 J3 Header Locations Connectors J2 and J3 provide pin header alternatives to the DB15 and DB37 connectors The J2 and J3 holes are always present but are obstructed when the DB15 and DB37 are installed J2 16 position 2 row 0 1 pitch male pin rectangular header 86 Unshrouded Harwin Inc M20 9980846 Unshrouded 3x Taller Samtec Inc TSW 108 17 T D Shrouded Gold Finish On Shore Technology Inc 302 S161 Shrouded Right Angle TE Connectivity 1 1634689 6 J3 40 position 2 row 0 1 pitch male pin rectangular header Unshrouded Harwin Inc M20 9762046 Unshrouded 3x Taller Samtec Inc TSW 120 17 T D Shrouded Gold Finish On Shore Technology Inc 302 S401 Shrouded Right Angle TE Connectivity 5103310 8 Shrouded Gold Palladium Finish TE Connectivity 5104338 8 Sometimes customers order tall pin headers that mate directly to a separate custom PCB Refer to the pinout details below for electrical connections J2 1 GND 2 vs 3 Cloo 4 Cclo1 5 Cclo2 6 ClO3 7 GND 8 EIO0 9 E101 10 Elo2 11 ElO3 12 ElO4 13 ElO5 14 ElO6 15 ElO7 16 GND J2 OEM Pin Header J3 1 GND 2 GND 3 PIN20 10uA 4 PIN2 200uA 5 FIO7 6 FIO6 7 FIO5 8 FIO4 9 FIO3 10 FIO2 11 FIO1 12 FIOO 13 MIOO CIOO 14 MIO1 CIO1 15 MIO2 ClO2 16 GND 17 Vs 18 Vm 19 Vm 20 GND 21 DAC1 22 DACO 23 GND 24 AIN13 25 AIN12 26 AIN
182. s over all resolution index values Data for the T7 and T7 Pro data are combined and presented together for convenience where resolution index values 9 12 only apply to the T7 Pro The AIN sampling time is the typical amount of time required for the ADC hardware to make a single analog to digital conversion on any channel and is reported in milliseconds per sample The AIN sampling time does not include command response and overhead time associated with the host computer application Noise and Resolution Test procedure Noise and resolution data was generated by collecting 512 successive voltage readings using a short jumper between the test channel and ground The resulting data set represents typical noise measured on any one analog input channel in ADC counts The effective resolution is calculated by subtracting the RMS channel noise represented in bits from 16 bits Effective Resolution 16 bits log RMS Noise in ADC counts Table A 3 1 1 Effective resolution and sampling times for various gains and resolution index settings 9 12 T7 Pro Resolution Effective Effective AIN Sample Effective Resolution Vs Resolution Index Resolution Resolution Time Index bits uV ms sample 3300 Gain Range 1 10V S53 ns Sinan H Gain 10 1 16 0 316 0 04 p I Gain 100 2 16 5 223 0 1 1900 E Gain 1000 3 17 0 158 0 1 4 17 5 112 0 2 3 16 00 5 17 9 85 0 2 6 18 3 64 0 3 n 13 00 7 18 8 45 0 6 ha 8 19 1 37 1
183. s stated for the ADC The combined resolution for an in system ADC is termed effective resolution Simply put the effective resolution is the equivalent resolution where analog voltages less than LSB voltage are no longer differentiable from the inherent hardware noise In addition to defining the smallest measurable analog voltage the effective resolution also defines the RMS peak to peak noise on a given analog channel Closely related to the effective resolution is the error free code resolution EFCR or flicker free code resolution The EFCR represents the resolution on a channel immune to bounce or flicker from the inherent system noise The EFCR is not reported in this appendix However it may be closely approximated by the following equation 104 EFCR effective resolution 2 7 bits 1 The T7 offers user selectable resolution through the resolution index parameter on any one AIN channel Internally the ADC hardware uses modified sampling methods to increase measurement resolution beyond the ADC s base resolution Valid resolution index values are 0 8 for the T7 and 0 12 for the T7 Pro 2 1133 Increasing the resolution index value will improve the channel resolution but doing so will usually extend channel sampling times See section 14 0 AIN for more information on the resolution index parameter and its use Noise and Resolution Data The data shown below summarizes typical effective resolutions and expected channel sampling time
184. sable 1 Enable DIO _EF_INDEX 9 DIO _EF_OPTIONS Not used DIO _EF_CONFIG_A Debounce timeout in microseconds us DIO _EF_CONFIG_B Debounce mode index DIO _EF CONFIG _B Not used DIO _EF_CONFIG _B Not used Update No update operations can be performed on Interrupt Counter with Debounce Read DIO _EF_READ_A Returns the current Count Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer 51 READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A_AND_RESET Reads the current count then clears the counter Note that there is a brief period of time between reading and clearing during which edges can be missed During normal operation this time period is 10 30us If missed edges at this point can not be tolerated then reset should not be used Example Enable a debounce counter on FIOO DIOO_EF_ENABLE 0 DIOO_EF_INDEX 9 DIOO_EF_CONFIG_A 5000 5 ms debounce time DIOO_EF_CONFIG_B 0 count falling debounce all self restarting timeout DIOO_EF_ENABLE 1 Results can be read from the READ registers defined above Edge Rate Limits This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must serv
185. sed per T7 to add 20 analog outputs 16 0 DB37 Number of Pins 37 Screw type 4 40 Contacts Gold coated Form factor D Sub This high density connector provides access to the T7 features that are not available on the screw terminal edge of the unit It brings out analog inputs AIN analog outputs DAC digital I O FIO MIO and other signals The CB37 is a connector board that provides convenient screw terminals for the DB37 lines but the CB37 is not required to access I O on the DB37 Any method you see fit can be used to access the DB37 lines Some signals appear on both the DB37 connector and screw terminals so care must be taken to avoid contention For such signals only connect to one location not both Signals shared between T7 screw terminals and the DB37 are denoted in bold Pinout 76 DB37 Pinouts 1 GND 14 AIN9 27 Vs 2 200uA 15 AIN7 28 Vm 3 FIO6 16 AIN5 29 DAC1 4 FIO4 17 AIN3 30 GND 5 FIO2 18 AIN1 31 AIN12 6 FIOO 19 GND 32 AIN10 7 MIO1 20 10uA 33 AIN8 8 GND 21 FIO7 34 AIN6 9 Vm 22 FIOS 35 AIN4 10 GND 23 FIO3 36 AIN2 11 DACO 24 FIO1 37 AINO 12 AIN13 25 MIOO 13 AIN11 26 MIO2 DB37 Connector Pinouts 19 1 37 20 The above image shows standard DB37 pin numbers looking into the female connector on the T7 VS GND FIO MIO AIN DAC 200UA 10UA Descriptions of these can be found in their related sections of this datasheet VM VM Vm Vm are bipolar power supplies intended to power external mult
186. set the other options More options are likely to be added so be sure to leave unused bits cleared to zero DIO _EF_ENABLE 0 Disable 1 Enable DIO _EF_INDEX 12 DIO _EF_OPTIONS Not used DIO _EF_CONFIG_A Reset Options bitmask e bit 0 Edge select 1 rising 0 falling e bit 1 reserved e bit 2 OneShot 1 only reset once 0 reset every n edges DIO _EF_CONFIG_B Number of edges per reset DIO _EF_CONFIG_C IO number of DIO_EF to be reset DIO _EF_CONFIG_D Not used Update No update operations can be performed on Conditional Reset Read DIO _EF_READ_A Returns the current count DIO _EF_READ_B Not Used DIO _EF_READ_A_F Not Used DIO _EF_READ_A_AND_RESET Not Used Stream Read All operations discussed in this section are supported in command response mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_ 16 in the scan list to get the upper 16 bits Example This example assumes that DIOO has a running extended feature such as quadrature or a counter Now we will set up DIO2 as a falling edge trigger that will reset the count of DIOO_EF DIO2_EF_ENABLE 0 Ensure that the DIO_EF is not running so that it can be configured DIO2_EF_INDEX 12 Set to Conditional Reset DIO2_EF_CONFIG_A 0 Falling edges DIO2_EF_CONFIG_B 1 Reset every
187. single ended signal is measured where Vpos is 10 0 volts compared to GND and G 1 That means Vem 5 0 volts Vdiff 10 0 volts and the expected Vout 10 0 volts This is fine according to the figure below Input Common Mode Voltage Range vs Output Voltage G 1 INPUT COMMON MODE VOLTAGE V 16 12 12 16 OV 11 9V 11 8V 6 1V 12 1V 6 1V 11 8V 6 1V OV 12 2V OUTPUT VOLTAGE V Input Common Mode Voltage Range vs Output Voltage G 1000 INPUT COMMON MODE VOLTAGE V OV 11 7V 12 4V 5 5V 12 1V 5 5V 12 4V 5 5V 12 1V 5 5V OV 12 1V OUTPUT VOLTAGE V 107 A 4 Analog Output The T7 supports two analog output channels labeled DACO and DAC 1 General characteristics of the two channels are available below Parameter Conditions Typical Max Units Nominal Output Range 1 No Load 0 01 4 99 Volts 2 5mA 0 25 4 75 Volts Resolution 12 Bits Absolute Accuracy 5 to 95 FS 0 06 FS Integral Linearity Error 1 5 2 counts Differential Linearity Error 0 25 0 5 counts Noise 2 100 pV Source Impedance 3 50 Q Current Limit 4 Max to GND 20 mA Time Constant 4 us 1 Maximum and minimum analog output voltage is limited by the supply voltages VS and GND The specifications assume VS is 5 0 volts Also the ability of the DAC output buffer to driver voltages close to the power rails decreases with increasing output current 2 With load the noise increases if operati
188. sponse mode In stream mode you can read from the integer READ registers A B A AND_RESET but as mentioned in the Stream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A_AND_RESET Returns the same data as DIO _EF_READ_A and then clears the result so that zero is returned by subsequent reads until another full period is measured Example First configure the clock source Roll value would usually be set to 0 to provide the maximum measurable period but assume for this example that we have to use 10000 because of PWM output on another channel DIO_EF_CLOCKO_DNISOR 8 _ ClockOFrequency 80M 8 10 MHz DIO_EF_CLOCKO_ROLL_VALUE 10000 DIO_EF_CLOCKO_ENABLE 1 This clock configuration results in Resolution 1 10M 0 1 us and MaxPeriod 10000 10M 1 ms Now configure the DIO_EF on FIOO as frequency input DIOO_EF_ENABLE 0 DIOO_EF_INDEX 3 or 4 Select rising or falling edges DIO _EF_OPTIONS 0 Select the clock source DIOO_EF_ENABLE 1 Turnonthe DIO_EF At this point the LabJack is watching the IO lines for the specified edge After the first two edges have been observed the time between them is stored and this repeats for each subsequent edge Results can be read from the READ registers defined above 13 1 6 Pulse Width In Capable DIO FIOO FIO1 Requires Clock Source Yes Index 5 Pulse W
189. st clock divisor that will not result in a roll value greater than the clock source s maximum 32 bits or 16 bits With a divisor of 1 the roll value will be 8000 80 MHz 1 8000 10 kHz Now set the registers accordingly DIO_EF_CLOCKO_ENABLE 0 DIO_EF_CLOCKO_DIVISOR 1 DIO_EF_CLOCKO_ROLL_VALUE 8000 DIO_EF_CLOCKO_ENABLE 1 Once the clock source is configured we can use the roll value to calculate Config_A DC 25 100 Config_A 8000 So Config _A 2000 Now the PWM can be turned on by writing the proper registers DIOO_EF_ENABLE 0 DIOO_EF_INDEX 0 DIOO_EF_CONFIG_A 2000 DIOO_EF_ENABLE 1 Configure settings to generate LJM psuedocode Desired FIO Channel FIOO Desired Frequency Hz 1000 Desired Duty Cycle 50 Select Clock Source ClockO Select Clock Divisor 1 gt Pseudocode Configure Lua Script Functionality on T7 int handle LJM_OpenS ANY ANY ANY Open the first found device Start and Stop a Lua Script LJM_eWriteName handle LUA_RUN 1 LJM_eWriteName handle LUA_RUN 0 Start a Lua Script Stop a Lua Script Saving Lua Script to a Device 1 Stop the Lua Script LJM_eWriteName handle LUA_RUN 0 Stop the Lua Script string scriptData LJ IntervalConfig 0 1000 while true do if LdJ CheckInterval 0 then print Hello world from VERSION n end end int scriptLength scriptData length 2 Write the size of t
190. stems can configure their wireless cards to become an AP or do an Internet search to find a simple program that sets up the virtual access point for you we have found that My WiFi Router works well The laptop can control the T7 act as host or simply provide a link for the T7 Pro to access other parts of a network T7 PRO ra Wireless device m T7 PRO se on Wireless device Laptop as Wireless AP Name Laptop WiFi Encryption WPA PSK also acts as host canes Wireless A Laptop WiFi Cell Network PO Card 3G 4G Figure 3 Laptop only Laptop software and built in wireless card create a wireless network AP If you need internet access on your laptop but you are using it as a wireless access point then consider a 3G card or USB dongle to get a cellular internet connection Alternatively locate an Ethernet jack that you know is connected to the internet e Internet T7 PRO Modem te je d T7 PRO Gay m pe Wreless device JG Card ce USB Donge Wireless Router mie beers AP EAP Name Laptop WiFi WIFI AP disabled Encypon WPA PSK ne Of password unknown aiso acts as host a Weeess Laptop WF Ethemet W Figure 4 Laptop only with internet Either Option A or Option B can be used to get internet access Just like figure 3 the laptop is creating the wireless network AP If you have a cell phone or tablet and a laptop you can create a Mobile Hotspot with the cell phone and then co
191. t enabled the list may also include something to write each scan Names Addresses STREAM SCANLIST ADDRESSO 4100 4102 4104 Show All STREAM SCANLIST ADDRESS1 STREAM SCANLIST ADDRESS2 Show All document ready function collapsed content expander closest content find sometimes shown hide collapsed content expander click function e e target closest content find collapsed content expander fadeOut function e target closest content find sometimes shown fadeln return false 3 2 1 Stream Out Advanced Stream Out is a set of streamable registers that move data from a buffer to an output The output can be digital O DIO ora DAC The buffer can be read linearly to generate a irregular waveform or in a looping mode to generate a periodic waveform The T7 can output up to 4 waveforms using stream out Targets The following target list represents the I O on the device that can be configured to output a waveform using stream out Basically the list includes the analog and digital output lines DACO DACL FIO_STATE FIO_DIRECTION EIO_STATE EIO_DIRECTION CIO_STATE CIO_DIRECTION MIO STATE MIO DIRECTION Stream Out Name Start Address Type Access Default STREAM_OUTH 0 3 4800 UINT16 R 0 STREAM _OUT 0 3 Include one or more of these registers in STREAM_SCANLIST_ADDRESS 0 127 to trigger stream out updates This register returns null data when re
192. table above The cal constants begin at memory address 0x3C4000 or in decimal format 3948544 The structure location of each calibration value can be seen in the code snippet below Follow the above example to read out the first 8 values PSlope NSlope Center Offset HS Gain x1 and PSlope NSlope Center Offset HS Gain x10 typedef struct float PSlope float NSlope float Center float Offset Cal_Set typedef struct Cal_Set HS 4 Cal_Set HR 4 struct float Slope float Offset DAC 2 float Temp_Slope float Temp_Offset float ISource_10u float ISource_ 200u float I_Bias Device Calibration The full size of the calibration section is 164 bytes or 41 floats 81 The reason that there are Cal_Set s for each High Speed HS and High Resolution HR is that there are 2 analog converters ona T7 Pro A standard T7 uses only the High Speed analog converter so only the HS 4 calibration values will be populated with valid information A T7 Pro will have calibration information for both high speed and high resolution converters Additionally there are distinct sets of positive slope Pslope negative slope Nslope Center and Offset values for each of the 4 gain settings on the device High speed AIN calibration values HS 4 HS 0 calibration for gain x1 HS 1 calibration for gain x10 HS 2 calibration for gain x100 HS 3 calibration for gain x1000 High resolution Pro
193. tch rectangular header To prevent accidentally 85 switching V and GND use a keyed connector such as TE Connectivity 3 641215 2 J5 1 V 2 GND J5 OEM Pin Header The 5V supply from J5 goes through R21 0 1 ohms and then connects to the device wide VS bus The 5V supply from USB goes through R15 0 1 ohms and then connects to VS On the T7 T 7Pro R15 amp R21 are both installed by default and thus the connections for both sources are essentially shorted to each other and both should not be connected at the same time as one could back feed the other If you are going to connect to J5 and there is a possibility of power at the USB connection also remove R15 You can also replace R15 and R21 with diodes SMA package to prevent back feeding but even Schottky diodes will have voltage drop that needs to be considered Ethernet The same Ethernet connector is installed on all versions of the T7 due to the inherent magnetic complexities However it is possible to bring out a duplicate Ethernet jack to any custom enclosure with one of the following e A short Ethernet cable segment and an RJ45 coupler Plug to Plug These couplers come in a few varieties Free hanging in line Chassis Mount Panel Mount Bulkhead Wall Plate etc Conec 33TS3101S 88N and Emerson 30 1008KUL are both good options e ARJ45 Jack to Plug cable which is just a standard Ethernet plug on one end and a Jack female on the other end Again these come ina wi
194. ter positive barrel connector to USB A male plug e Tensility International Corp 10 00648 A Female to B Male USB cable This will fit on the USB A male plug Tensility 10 00240 and insert into the T7 7 0 WiFi T7 Pro only Communication Protocol Modbus TCP Connector Type Female RP SMA Transceiver 2 4 GHz 802 11 b g Compatible with ac and n routers Range With stock antenna similar to laptops and other WiFi devices Max Packet Size 500 bytes packet Overview The T7 Pro has a wireless module Refer to this WiFi and Ethernet tutorial to get started 21 DHCP is enabled from the factory so to get WiFi going from the factory write the desired SSID string case sensitive to WIFISSID_DEFAULT and the proper password string case sensitive to WIFIPASSWORD_DEFAULT Then write a 1 to WIFILAPPLY_SETTINGS and watch the status codes If you get back code 2900 the WiFi chip is associated to your network and you can then read the assigned IP from WIFI_IP Find more details and troubleshooting tips in the WiFi and Ethernet tutorial Note It s possible to get data faster on a T7 Pro using its Ethernet interface instead of its WiFi interface both for command response and streaming modes Wireless bridges and access points do not introduce a speed bottleneck so a bridge is a good way to get fast wireless data from a T7 or T7 Pro See the Convert Ethernet to WiFi App Note for setup information Config _DEFAULT Regis
195. ters versus Status Registers The first list below is the config registers These are generally written to configure default WiFi settings but can also be read except password Configure the WiFi parameters in Kipling software Any register with DEFAULT at the end is non volatile Whatever value you write to a DEFAULT register will be retained through a reboot or power cycle WiFi is unique compared to other systems on the T7 in that new values written to DEFAULT registers are not actually saved until a 1 is written to WIFIAPPLY_SETTINGS The second list below consists of read only registers to read the status of WiFi For example if you write WIFI_IP_DEFAULT 192 168 1 208 you actually write read the 32 bit numeric equivalent not an IP string then that value will be retained through reboots and is the default IP address If DHCP is disabled this will be the static IP of the device and what you get if you read WIFL_IP If DHCP is enabled then a read of WIFI_IP will return the IP set by the DHCP server WiFi Config Registers Name Start Address Type Access Default WIF _IP_DEFAULT 49250 UINT32 R W WIF _SUBNET_DEFAULT 49252 UINT32 R W WIFI GATEWAY _DEFAULT 49254 UINT32 R W WIFI_DHCP_ENABLE_DEFAULT 49260 UINT16 R W WIF I_SSID_ DEFAULT 49325 STRING R W WIFlI_PASSWORD_DEFAULT 49350 STRING Ww WIFI_APPLY_SETTINGS 49400 UINT32 WwW WIFI_IP_DEFAULT The new IP address of WiFi Use WIFILAPPLY_SETTINGS WIFI_SUBNET_DEFAULT The new subnet of
196. the dynamic pullup bit 3 DPU Polarity Write 1 to set the active state as high 0 to set the active state as low ONEWIRE_FUNCTION This controls how the ROM address of 1 wire devices will be used ONEWIRE_NUM_BYTES_TX The number of bytes to transmit to the device Has no affect when the ROM function is set to Search or Read ONEWIRE_NUM_BYTES_RX The number of bytes to read from the device Has no affect when the ROM function is set to Search or Read ONEWIRE_ROM_MATCH_H The upper 32 bits of the ROM of the device to attempt to connect to when using the Match ROM function ONEWIRE_ROM_MATCH_L The lower 32 bits of the ROM of the device to attempt to connect to when using the Match ROM function ONEWIRE_PATH_H Upper 32 bits of the search path ONEWIRE_PATH_L Lower 32 bits of the search path ROM Functions OxFO Search This function will read the ROM of one device on the bus The ROM found is placed in ONEWIRE_SEARCH_RESULT and if other devices were detected the branch bits will be set in ONEWIRE_ROM_BRANCHS_FOUND OxCC Skip This function will skip the ROM addressing step For this to work properly only one device may be connected to the bus 0x55 Match When using this function data will be sent to and read from a device whose ROM matches the ROM loaded into the ONEWIRE_ROM_MATCH registers 0x33 Read Reads the ROM of the connected device For this to work properly only one device may be connected to the bus Sending data
197. tream Section those reads only return the lower 16 bits so you need to also use STREAM_DATA_CAPTURE_16 in the scan list to get the upper 16 bits Reset DIO _EF_READ_A_AND_RESET Performs the same operation as DIO _EF_READ_A then clears the result and starts another measurement Example First configure the clock source DIO_EF_CLOCKO_DNISOR 1_ ClockOFrequency 80M 1 80 MHz DIO_EF_CLOCKO_ROLL_VALUE 0 DIO_EF_CLOCKO_ENABLE 1 This clock configuration results in Resolution 1 80M 12 5 ns and MaxPeriod 2432 80M 53 7 seconds Now configure the DIO EF on FIO0O amp FIO1 as line to line DIOO_EF_ENABLE 0 DIO1_EF_ENABLE 0 DIOO_EF_INDEX 6 Index for line to line feature DIOO_EF_OPTIONS 0 Select the clock source DIOO_EF_CONFIG_A 0 Detect falling edge DIOO_EF_ENABLE 1 _ Turnonthe DIO EF DIO1_EF_INDEX 6 Index for line to line feature DIO1_EF_OPTIONS 0 Select the clock source DIO1_EF_CONFIG_A 0 Detect falling edge DIO1_EF_ENABLE 1 _ Turnonthe DIO EF At this point the device is watching FIOO for a falling edge Once that happens it watches for a falling edge on FIO1 Once that happens it stores the time between those 2 edges which you can read from the READ registers described above To do another measurement repeat the DIOO EF configuration above or read from DIOO_EF_READ_A_AND_RESET 13 1 8 High Speed Counter Capable DIO CIO0 ClO1 ClO2 CIO3 Requires Clock Source No Index
198. ult the DIO lines are digital O but they can also be configured as PWM Output Quadrature Input Counters etc see Extended Feature section of this Datasheet FIO vs EIO vs CIO vs MIO DIO is a generic name used for all digital O The DIO are subdivided into different groups called FIO EIO CIO and MIO Sometimes these are referred to as different ports For example FIO is an 8 bit port of digital VO and EIO is a different 8 bit port of digital V O The different names FIO vs EIO vs CIO vs MIO have little meaning and generally you can call these all DIOO DIO22 and consider them all the same There are a couple details unique to different ports e The source impedance of an FIO line is about 550 ohms whereas the source impedance of EIO CIO MIO lines is about 180 ohms Source impedance might be important when sourcing or sinking substantial currents such as when controlling relays e The MIO lines are automatically controlled when using analog input channel numbers from 16 to 127 This is for controlling external multiplexers or the Mux80 expansion board Power up Defaults The default condition of the digital O can be configured by the user From the factory all digital O are configured as inputs by default Note that even if the default for a line is changed to output high or output low there could be a small time milliseconds during boot up where all digital O are in the factory default condition Protection All th
199. un until it is done except that stream interrupts are higher priority and will preempt other interrupts When an ISR completes it clears the IF for that channel So it is okay to have edges on multiple channels at the same time as long as there is not another edge on any of those channels before enough time to process all the initial edges Say that channel A amp B have an edge occur at the same time and an ISR starts to process the edge on channel A If channel A has another edge during the first 14 us that edge will be lost If channel B has another edge during the first 14 us the initial edge will be lost If channel B has another edge during the second 14 us during the ISR for channel B the new edge will be lost 13 1 12 Interrupt Frequency In Capable DIO FIOO FIO1 FIO2 FIO3 FIO6 FIO7 Requires Clock Source No uses core clock 2 Index 11 54 Interrupt Frequency In will measure the frequency of a signal on the associated DIO line This interrupt based digital VO extended feature DIO EF is not purely implemented in hardware but rather firmware must service each edge See the discussion of edge rate limits at the bottom of this page To measure the frequency the LabJack will measure the duration of one or more periods There are several option available to control the way the LabJack does this The number of period to be averaged the edge direction to trigger on and whether to measure continuously or in a one shot
200. unction to close the connection Direct Modbus TCP Clients Itis easy to integrate a T7 over Ethernet or WiFi into standard COTS Modbus software platforms since the T7 is directly compatible People who already use Modbus software will find this option convenient Some COTS Modbus software is very powerful and will save users the time and money required to develop their own software Conceptual workflow 1 Configure the power up default registers on the T7 using the Kipling software program Change Ethernet WiFi IP settings any relevant analog input settings etc DEFAULT registers indicate that they are power up defaults 2 Open COTS Modbus program 3 Specify the Modbus registers by address such as 8 for AIN4 Find applicable registers with the register look up tool or by referencing the datasheet etc 4 See data directly from the T7 in COTS software Communication Speed Considerations There are two alternate methods for data transfer to occur command response is the lowest latency and streaming offers the highest data throughput the following sections provide more detail Command Response This is the default behavior for communication with a device and most people find the data throughput satisfactory Direct Modbus interactions will always use command response The high level LUM library also uses command response Communication is initiated by a command from the host which is followed by a response from t
201. upported in stream For example a typical stream application might set up the device to acquire a single analog input at 100 000 samples second The device moves this data to the host in chunks of 25 samples each The LJM library moves data from the USB host memory to the software memory in chunks of 2000 samples The user application might read data from memory once a second in a chunk of 100 000 samples The computer has no problem retrieving processing and storing 100k samples once per second but it could not do that with a single sample 100k times per second See Appendix A 1 for details on stream mode data rates Command response can be done while streaming but streaming needs exclusive control of the analog input system so analog inputs including the internal temperature sensor cannot be read via command response while a stream is running 3 1 Modbus Map This utility is used to find Modbus registers that pertain to the T7 simply select the T7 from the device filter and then narrow down results using either the search tool or the tag filters All of these registers use command response unless specified as STREAM http labjack com support modbus map We distribute a constants file called Ijm_constants json that defines all information about the Modbus register map The dynamic filter amp search tool below pulls data from that JSON file Name A string name that can be used with the LJM library to access each register Addr
202. utput high and shorted to ground the current sourced by EIOO is configured as output high and shorted to ground the current sourced by EIO0 into ground will be about 16 mA 3 3 180 If connected to a load that draws 5 mA ElOO can provide that current but the voltage will droop to about 2 4 volts instead of the nominal 3 3 volts If connected to a 180 ohm load to ground the resulting voltage and current will be about 1 65 volts 9 mA Extended Features Below you can find information regarding the T7 s DIO EF Extended Features Conditions Min Typical Max Units Frequency Output 1 0 02 5M Hz Counter Input Frequency 2 5 MHz Input Timer Total Edge Rate 3 4 No Stream 70k edges s While Streaming 50 kHz 20k edges s 1 Frequencies up to 40MHz are possible but they are heavily filtered 2 Hardware counters 0 to 3 3 volt square wave 3 To Avoid missing edges keep the total number of applicable edges on all applicable timers below this limit 4 Excessive processor loading could reduce these limits further Serial Communication Below you can find information regarding the T7 s Serial Communication abilities Please keep in mind our devices use 3 3V logic levels and provide 5V output along the VS screw terminal Some ICs require the same logic level as provided to the chip s VCC line so extra steps may be required to integrate specific sensors Serial Communication Conditions Min Max Units SPI Characteristics Clock F
203. uts Each DAC can be set to a voltage between about 0 01 and 5 volts with 12 bits of resolution 16 For information about reading inputs start in Section 3 For information about setting outputs start with the Waveform Generation Application Note Hi Speed ADC Up to 19 bit Up to 100 ksamples s Analog Outputs DACO and DAC Daco 12 b Resolution Microcontroller 200 vA Extended Features PWM Output ereere ereo Pulse Output Crystal P y Counter Quadrature input Figure 4 2 Block Diagram General Device Information Registers Name Start Address Type Access Default PRODUCT _ID 60000 FLOAT32 R HARDWARE_VERSION 60002 FLOAT32 R FIRMWARE_VERSION 60004 FLOAT32 R BOOTLOADER_VERSION 60006 FLOAT32 R WIFI _VERSION 60008 FLOAT32 R HARDWARE_INSTALLED 60010 UINT32 R 0 ETHERNET_MAC 60020 UINT64 R WIFI_MAC 60024 UINT64 R SERIAL_NUMBER 60028 UINT32 R DEVICE_NAME_DEFAULT 60500 STRING R W PRODUCT_ID The numeric identifier of the device Such as 3 for a U3 HV HARDWARE_VERSION The hardware version of the device FIRMWARE_VERSION The current firmware version installed on the main processor BOOTLOADER_VERSION The bootloader version installed on the main processor WIFI_VERSION The current firmware version of the WiFi module if available HARDWARE_INSTALLED Bitmask indicating installed hardware options bit0 High Resolution ADC bit1 WiFi bit2 RTC bit3 uSD ETHERNET_MAC The MAC address
204. w level customers must search for what names correspond with what addresses using the modbus map We hope to integrate this look up process eventually e When switching away from the Lua Script Debugger tab the active script is forgotten We hope to cache the open script file path so that users don t have to keep re opening their script file each time e View logged data on SD card Currently the easiest way to interact with the file system on the T7s uSD card is to physically remove the SD card from the device by unscrewing the enclosure Until K3 includes a tool customers can get data off of the uSD card with this beta program Note that the beta program is subject to changes and will not work with firmware older than 1 0150 Lua Known Issues e Lua is using a single precision float for its data type This means that working with 32 bit integer registers is difficult see examples below If any integer exceeds 24 bits the lower bits will be lost The workaround is to access the modbus register using two numbers each 16 bits Lua can specify the data type for the register being written so if users are expecting a large number that will not fit in a float gt 24bits such as a MAC then read or write the value as a series of 16 bit integers If you expect the value to be counting up or down use MB RA or MB RW to access the U32 as a contiguous set of 4 bytes If the value isn t going to increment e g the MAC address it is permissible to rea
205. wn fadeln return false STREAM_OUT 0 3 _ SET LOOP Controls when new data sets are used 1 Use new data immediately 2 Wait for synch New data will not be used until a different Stream Out channel is set to Synch 3 Synch This Stream Out as well as any Stream Outs set to synch will start using new data immediately gt 11 Example This example demonstrates how to configure DACO to output an analog waveform that resembles a triangle wave and also quickly measure two analog inputs AINO and AIN2 in streaming context Configuration steps specific to stream out 1 STREAM_OUTO_ENABLE 0 gt Turn off just in case it was already on 2 STREAM_OUTO_TARGET 1000 gt Set the target to DACO 3 STREAM_OUTO_BUFFER_SIZE 512 gt A buffer to hold up to 256 values 4 STREAM_OUTO_ENABLE 1 gt Turn on Stream Out0 General stream configuration 1 STREAM_SCANLIST_ADDRESSO AINO gt Add AINO to the list of things to stream in 2 STREAM_SCANLIST_ADDRESS1 STREAM_OUTO gt Add STREAM_OUTO DACO is target to the list of things to stream out 3 STREAM_SCANLIST_ADDRESS2 AIN2 gt Add AIN2 to the list of things to stream in 4 STREAM_ENABLE 1 gt Start streaming Note that there are some other settings related to streaming the analog inputs but those are covered under the section for stream mode Load the waveform data points The following data points have been chosen to produc

T7 Datasheet

Contents

Download Pdf Manuals

Related Search

Related Contents