WEB-TC User's Guide
Contents
1. 29 WEB TC User s Guide Specifications Note 3 Note 4 Note 5 Thermocouple measurement accuracy specifications include polynomial linearization cold junction compensation and system noise These specs are for one year or 3000 operating hours whichever comes first and for operation of the WEB TC between 15 C and 35 C after 30 minute warm up The tempco should be applied to the accuracy specifications for operation at an ambient temperature outside of the 15 C and 35 C range There are total of four CJC sensors two per side of the module Each CJC sensor is dedicated to one of the four channel pairs The accuracy listed above assumes the screw terminals are at the same temperature as the CJC sensor Errors shown do not include inherent thermocouple error Contact your thermocouple supplier for details on the actual thermocouple accuracy error Thermocouples must be connected to the WEB TC such that they are floating with respect to AGND pins 9 19 28 38 48 The WEB TC AGND pins are isolated from earth ground You can connect thermocouple sensors to voltages referenced to earth ground as long as the isolation between the AGND pins and earth ground is maintained When thermocouples are attached to conductive surfaces the voltage differential between multiple thermocouples must remain within 1 4 V For best results we recommend using insulated or ungrounded thermocouples when possible Throughpu2. Make no connection to terminals labeled NC or RSVD Use 16 AWG to 30 AWG wire for your signal connections Tighten screw terminal connections When making connections to the screw terminals be sure to tighten the screw until tight Simply touching the top of the screw terminal is not sufficient to make a proper connection Thermocouple input terminals COH COL to C7H C7L You can connect up to eight thermocouples to the differential sensor inputs COH COL to C7H C7L The WEB TC supports type J K R S T N E and B thermocouples The thermocouple type you select will depend on your application needs Review the temperature ranges and accuracies of each type to determine which is best suited for your application You can connect a different thermocouple type to each channel CJC sensors The WEB TC has four built in high resolution temperature sensors for thermocouple measurements Each CJC sensor is dedicated to two thermocouple input channels and is located behind the associated channel s screw terminal These sensors measure the ambient temperature at the terminal block so that the cold junction voltage can be calculated Digital terminals DIOO to DIO7 You can connect up to eight digital I O lines to the screw terminals labeled DIOO to DIO7 Each terminal is software configurable for input or output A PU D terminal is provided for pull up down configuration explained on page 19 If a digital bit is set
3. Off Digital logic voltage switch The digital logic voltage switch lets you set the voltage to either 3 3 V or 5 V default setting To interface with 3 3 V logic use the 3 3 V setting To interface with 5 V logic use the 5 V setting Refer to the digital I O specification on page 31 for the maximum and minimum threshold levels for each setting Left 5 V Right 3 3 V Figure 6 Output voltage switch positions To change the logic voltage slide the switch left or right with a screwdriver Factory default reset button Press and hold this button for three seconds to restore the factory default network settings on the WEB TC When held for 3 seconds the POWER LED will turn off for a short time indicating a reset is in process When the POWER LED turns back on reset is complete and the factory default network settings have been restored 23 Chapter 5 Ethernet Troubleshooting There are typically only two reasons why you would be unable to communicate with the WEB TC and access the web interface The WEB TC is configured incorrectly or is operating incorrectly The network is configured incorrectly Though the WEB TC is functioning normally you are unable to communicate with it over the network Though a detailed treatment of debugging the network is beyond the scope of this manual there are a few things to try to determine if the problem experienced is a problem with the WEB TC or with th
4. Network factory default Settings eie te SEE eR ED eii E ES 32 Network protocols RIDE ET l A E EP LED displays and the factory reset button sessi enne nee nennen ener entren nennen 33 Evironment ea P 33 Mechanical E aE P M 33 Screw terminal connector type and pin out esses enne enne eene nenne trennen tenerte nennen 34 Declaration of Conformity aeeeeeeeeeeeiie esee eeeneeeeen seen nnne enhn thia inta si sima natn nasa sa assis sa sn nasa 35 Preface About this User s Guide What you will learn from this user s guide This user s guide explains how to install configure and use the WEB TC so that you get the most out of its web server based thermocouple measurement features This user s guide also refers you to related documents available on our web site and to technical support resources Conventions in this user s guide For more information on Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading Caution Shaded caution statements present information to help you avoid injuring yourself and others damaging your hardware or losing your data dii Angle brackets that enclose numbers separated by a colon signify a range of numbers such as those assigned to registers bit settings etc bold text Bold t
5. Deleting an ARP table If you suspect that two devices on a network are assigned the same IP address you can delete the ARP table Address Resolution Protocol Do the following 1 Open a Command Prompt DOS window 2 Enter arp d followed by the address found in step 2 192 168 0 102 for example and press Enter The ARP table will update with the current IP addresses assigned to devices on the network Getting help If you are unable to communicate with the WEB TC first contact your network administrator or computer professional to verify that you are using the correct TCP IP network settings and that your network configuration is working If the network configuration and settings are properly set but you still cannot communicate with the WEB TC the problem may be with the WEB TC For hardware related issues contact Measurement Computing Corporation technical support by phone fax or email Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com For international customers contact the local distributor where you purchased the WEB TC Click on this link www measurementcomputing com sales asp to locate your distributor 27 Chapter 6 Specifications Typical for 25 C unless otherwise specified Specifications in italic text are guaranteed by design Analog input Table 1 Generic analog input specif
6. default is mccdaq set for the device and click the Log In button The user name and password cannot be changed from the web interface you must use nstaCal to change them o Temperature menu option Use the options on this page to set the thermocouple type for each temperature channel pair The factory default configuration is Disabled The Disabled mode disconnects the analog inputs from the terminal blocks and internally grounds all of the A D inputs Any channel you don t intend to use should be left disabled o DIO menu option Use the options on this page to set the direction of each digital I O channel and value of each digital I O channel configured for Output o Alarm menu option Use the options on this page to set up the temperature conditions to activate an alarm and the output state of the channel active high or low when activated You can configure up to eight independent alarms The configuration options are enabled on these pages when you are logged in The device is calibrated to the selected settings each time the Submit or Calibrate button is pressed Help summarizes the options on each web page and includes step by step procedures for setting up your temperature channels digital channels and alarms Logging in to a device Configurable options are disabled until you log in with the user name and password set for the device Only one user can be logged in at a time By default the user name
7. or refunded at MCC s discretion For specific information please refer to the terms and conditions of sale Harsh Environment Warranty Program Any Measurement Computing product that is damaged due to misuse or any reason may be eligible for replacement with the same or similar device for 50 of the current list price I O boards face some harsh environments some harsher than the boards are designed to withstand Contact MCC to determine your product s eligibility for this program 30 Day Money Back Guarantee Any Measurement Computing Corporation product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep it These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application The remedies provided herein are the buyer s sole and exclusive remedies Neither Measurement Computing Corporation nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from the use of its products even if Measurement Computing Corporation has been notified in advance of the possibility of such damages HM WEB TC doc Trademark and Copyright Information TracerDAQ Universal Library Harsh Environment Warranty Measurement Computing Corporation and the Measu
8. 35 NC No connect see Note 10 10 RSVD Reserved see Note 10 36 RSVD Reserved see Note 10 11 RSVD Reserved see Note 10 37 RSVD Reserved see Note 10 12 NC No connect see Note 10 38 AGND Analog ground 13 C2H CH2 sensor input 39 C5L CH5 sensor input 14 C2L CH2 sensor input 40 C5H CH5 sensor input 15 RSVD Reserved see Note 10 41 RSVD Reserved see Note 10 16 RSVD Reserved see Note 10 42 RSVD Reserved see Note 10 17 C3H CH3 sensor input 43 C4L CH4 sensor input 18 C3L CH3 sensor input 44 C4H CH4 sensor input 19 AGND Analog ground 45 NC No connect see Note 10 20 RSVD Reserved see Note 10 46 RSVD Reserved see Note 10 21 5V 5V output 47 NC No connect see Note 10 22 PU D Pull up down for digital outputs 48 GND Digital ground 23 DIOO Digital Input Output 49 DIO7 Digital Input Output 24 DIO1 Digital Input Output 50 DIO6 Digital Input Output 25 DIO2 Digital Input Output 51 DIO5 Digital Input Output 26 DIO3 Digital Input Output 52 DIO4 Digital Input Output Note 10 Do not make connections to pins marked NC or RSVD 34 C Declaration of Conformity Manufacturer Measurement Computing Corporation Address 10 Commerce Way Suite 1008 Norton MA 02766 USA Category Electrical equipment for measurement control and laboratory use Measurement Computing Corporation declares under sole responsibility that the product WEB TC EU EMC Directive 89 336 EEC Electromagnetic Co
9. Ethernet from an external application and the configuration is made non volatile through the use of the EEPROM Note 2 The factory default configuration is Type J 28 WEB TC User s Guide Specifications Compatible thermocouples Table 3 Compatible sensor type specifications Parameter Conditions Thermocouple J 210 C to 1200 C K 270 C to 1372 C R 50 C to 1768 C S 50 C to 1768 C T 270 C to 400 C N 270 C to 1300 C E 270 C to 1000 C B 0 C to 1820 C Accuracy Thermocouple measurement accuracy Table 4 Thermocouple accuracy specifications including CJC measurement error All specifications are Sensor Sensor temperature Accuracy error Accuracy error typical C Tempco C C Type maximum C J 210 C 3 098 1 762 0 040 0 C 1 282 0 724 1200 C 1 178 0 684 K 210 C 3 318 1 843 0 045 0 C 1 292 0 730 1372 C 1 495 0 799 S 50 C 1 892 1 058 0 027 250 C 0 853 0 479 1768 C 0 734 0 416 R 50 C 2 010 1 124 0 025 250 C 0 844 0 475 1768 C 0 612 0 347 B 250 C 2 199 2 192 0 004 700 C 0 824 0 821 1820 C 0 471 0 469 E 200 C 3 050 1 708 0 038 0 C 1 465 0 826 1000 C 1 010 0 564 T 200 C 3 226 1 797 0 045 0 C 1 334 0 754 400 C 0 856 0 496 N 200 C 3 406 1 897 0 035 0 C 1 300 0 735 1300 C 0 978 0 571
10. Stes eS a Ses Microchip aa Sie Se a Say 5V DC Ethernet o External MAC PHY Bo Power Controller o Ba Ba O ss o Ost HE o t of Q ss z DIO Z o o o GOGGOGGOSGSGGSOGSOGSGSGGOGSSGOGSSSSSSSG 16 Mbit Microcontroller 500 V Isolation Barrier O Flash memory o Website Storage o o o o E 8 o8 E Q9 Es Thermocouple o ES BE inputs ote FS Microchip 8 channels olka o H Oc 2 Microcontroller Q2 S Configuration E a EEPROM Q2 o Figure 1 WEB TC functional block diagram Software features For information on the features of InstaCal and the other software included with your WEB TC refer to the Quick Start Guide that shipped with your device The Quick Start Guide is also available in PDF at www mccdaq com PDFEmanuals DA Q Software Quick Start pdf Check www mccdaq com download htm for the latest software version 9 Chapter 2 Installing the WEB TC What comes with your WEB TC shipment The following items are shipped with the WEB TC Hardware WEB TC Ethernet cable standard You can optionally purchase a crossover cable CAT 5 or higher to connect the WEB TC to an Ethernet card installed in a computer External power supply and cord 10 watt AC power adapter MCC part number PS 5V2AEPS 10 WEB TC User s Guide Installing the WEB TC Additional documentation In addition to this hardware user s guide you should also receive the Quick S
11. are properly connected to an active server hub switch and the LED is still off there is a problem with the WEB TC Contact MCC technical support Refer to Getting help on page 27 for contact information 3 Verify the network connection When the WEB TC is connected to a network the LINK ACTIVITY LED flashes when there is activity on the network o Ifthe LINK ACTIVITY LED is solid green your network s traffic is at its maximum limit and no communication is possible or the network traffic is idle Check with your network administrator o If the LINK ACTIVITY LED is not illuminated there are two possibilities You are not connected to the network even though the WEB TC is connected to an active server hub switch An average network has at least some traffic that causes the LED to blink Perform the procedure listed in Checking your TCP IP settings on page 25 The WEB TC is not receiving data and the network connection is verified by a network administrator Contact MCC technical support Refer to Getting help on page 27 for contact information 24 WEB TC User s Guide Ethernet Troubleshooting When the WEB TC is directly connected to a computer via a crossover cable or a single hub switch the LINK ACTIVITY LED flashes when data is transmitted or received over the Ethernet connection o Ifthe LINK ACTIVITY LED is not flashing there are two possibilities Your computer is not transmitting verify that your TCP IP settings are
12. continues to sample all channels when OTD is detected External components The WEB TC has the following external components as shown in Figure 5 Screw terminals Ethernet port External power connector Status LEDs POWER COMM and LINK ACTIVITY Digital output voltage switch Factory default reset button 21 WEB TC User s Guide Functional Details Screw terminal Pins 27 to 52 Power connector Factory default reset button LEDs POWER COMM top and LINK ACTIVITY bottom Digital output voltage switch Ethernet port Screw terminal Pins 1 to 26 Figure 5 WEB TC component locations Screw terminals The screw terminals provide connections for sensors digital channels power and ground Detailed information is provided in Chapter 3 Signal I O Connections beginning on page 17 Ethernet port The WEB TC has one 1 OBASE T communication port The port connector is an eight position RJ 45 connector Use the Ethernet cable provided to connect the device to a local or wide area network or to a hub attached to a single computer Use a CAT S or higher shielded or unshielded twisted pair crossover cable to connect directly to a computer The maximum communication distance without using a repeater is 100 meters Data can transmit up to 100 meters at speeds of up to 100 Mbps using only one crossover Ethernet cable connected to your computer External power connector Use the supplied external power
13. correct and that you are using a valid IP address for both your computer and WEB TC Perform the procedure listed in Check the network settings on the computer TCP IP settings below The WEB TC is not receiving contact MCC technical support Refer to Getting help on page 27 for contact information Check the network settings on the computer If the LINK ACTIVITY LED is not flashing verify that your TCP IP settings are correct and that you are using a valid IP address for both your computer and the WEB TC Use the ipconfig utility to return the TCP IP settings on your computer 1 Open a DOS Command Prompt window from your computer 2 Enter ipconfig and press the Return key Your computer will display all TCP IP network configuration values currently set on the computer An example is shown here Command Prompt lo xl Microsoft Windows XP Version 5 1 2666 lt C gt Copyright 1985 2661 Microsoft Corp C Documents and Settings JMS gt ipconf ig Mindows IP Configuration Ethernet adapter Local Area Connection Connection specific DNS Suffix mccdaq com 207 190 229 197 Subnet Mask 255 255 255 0 Default Gateway gt 18 17 4 1 C Documents and Settings JMS gt o Ifthe IP Address or Subnet Mask information are all 0 s or if the first three sets octets of numbers in either the IP address or Subnet Mask do not match the device s network settings then the computer will be unable to communi
14. differential thermocouple measurements without the need of ground referencing resistors A 32 bit floating point value in either a voltage or temperature format is returned by software An open thermocouple detection feature is available for each analog input which automatically detects an open or broken thermocouple Use the web interface or nstaCal to select the thermocouple type J K R S T N E and B and one or more sensor input channel to connect the thermocouple Wiring configuration Connect the thermocouple to the WEB TC using a differential configuration as shown in Figure 3 EYES Qao RSVD O zZ C H C L RSV RSV C H Cat AGN RSV V M Figure 3 Typical thermocouple connection Note There are two high low channel pairs on each terminal The indicates the channel number Do not connect any signal or sensor to the pins labeled NC or RSVD These pins must remain disconnected for the WEB TC to operate according to specification Thermocouples must be connected to the WEB TC such that they are floating with respect to AGND pins 9 19 28 and 38 The WEB TC AGND pins are isolated from earth ground so connecting thermocouple sensors to voltages referenced to earth ground is permissible as long as the isolation between the AGND pins and earth ground is maintained 19 WEB TC User s Guide Signal I O Connections When thermocouples are attached to conductive sur
15. goes above T2 Alarm when input temperature is lt T1 or gt T2 Note T1 and T2 may be independently set for each alarm Alarm output modes Disabled digital I O line may be used for normal operation Enabled active high output digital I O line goes high when alarm condition is met Enabled active low output digital I O line goes low when alarm condition is met Alarm update rate second Memory Table 8 Memory specifications EEPROM 512 bytes for sensor configuration FLASH 2 MB for device configuration and website storage Microcontroller Table 9 Microcontroller specifications Type One high performance 8 bit RISC microcontroller isolated One high performance 16 bit RISC microcontroller non isolated 31 WEB TC User s Guide Specifications Power Table 10 Power specifications Parameter Conditions Specification Supply current Note 9 Continuous mode 440 mA max External power input Note 8 5 VDC 5 5 VDC power supply provided External power supply included MCC p n PS 5V2AEPS 5 VDC 10W 5 regulation Voltage supervisor limits 4 75 V gt Vex or Vex gt 5 25 V PWR LED Off power fault 4 75 V lt Vex lt 5 25 V PWR LED On User output voltage range Available at 5V screw terminal 4 65 V min 5 25 V max User output current available Available at 5V screw terminal 10 mA max Note 8 Voltage specification a
16. is set to webtc and the password is set to mccdaq You can change these values with JnstaCal Base64 encryption is used to encrypt the login name and password JavaScript must be enabled on the browser to encrypt login information If JavaScript is disabled on your browser when you log in the user name and password values are transmitted as plain text with no encryption applied Configuring the WEB TC using nstaCal All hardware and network options are configurable with nstaCal When the device is using its default configuration nstaCal has access to all functions on the device Login is done in the background if the default user name and password are assigned to the device By default the user name is set to webtc and the password is set to mccdaq You can change these values with InstaCal If the user name and password have been changed configurable options are disabled until you log in with the user name and password set for the device Only one user can be logged in at a time It is recommended that you change the user name and password from the default To prevent unauthorized changes to your device configuration make sure you change the user name and password values from the default In the event that you forget your settings they can be reset to the default values using the reset button on the device Pressing and holding the reset button for three seconds sets all network settings back to default including the user name and pas
17. mccdag com PDFmanuals DAQ Software Quick Start pdf Connecting the AC power adapter Power to the WEB TC is provided with the 10 watt AC power adapter PS 5V2AEPS Connect the adapter cord to the power connector on the WEB TC device and plug the AC adapter into an electrical outlet The POWER COMM LED illuminates when 5 V power is supplied to the WEB TC If the voltage supply is less than 4 75 V or more than 5 25 V the POWER COMM LED will not light Refer to Figure 5 on page 22 for the location of the POWER COMM LED Connecting the WEB TC A TCP IP connection between the WEB TC and the network or computer is required to access the device s web interface A 10Base T compatible Ethernet port hub or switch is required You can connect the WEB TC using the following configurations Connect to your Local Area Network LAN for communication within a private network intranet refer to the procedure on page 12 Connect to your LAN for communication across networks communicate over the internet for example refer to the procedure on page 12 Connect directly to a computer s Ethernet port for local access requires a crossover cable not provided or network hub refer to the procedure on page 13 Use the standard Ethernet cable provided to connect the WEB TC to a TCP IP based local or wide area network or to connect to a single PC through a hub or switch Use a CAT 5 or higher crossover cable not provided to connect the
18. out Thermocouple input terminals COH COL to C7H C7L COV SenSOLS cereo eti mE ES cbs cas sa sas GUI E HR Ee daca ts OUO EO REGI GIN EREO bade E ada bane E A AS Digital terminals DIOQ to DIOT Jirin tte treten ete use ean eoe te Eee nein Eee aea anne eene Eee ES ER REN ben a aene Pull up down terminal PU D Ground terminals AGND and GND iniecto eite ison edet Powerterminal 385 V eerte o E C ee o NE Pet o ERO DEC BN OLG ENSE Thermocouple connections Wiking Config rationi eie nean r A a T E tidie bee ere TRIES Digital I O c nnectiofis ero Ee Due o MR e dt ebore I aaa are Configuring the DIO channels to generate alarms eeeeeeseeeseereeeeerenneeenen ennemi trennen eren nnennene WEB TC User s Guide Chapter 4 F nctional Details c 21 Thermocouple Measurements s eit re rte REC TR SER EE RS ERREUR METER E EO EE RR REUNIR 21 Cold junction compensation CIC 7 irr reo o D ERREUR UE T m ote d e tuts 21 Data nearizat on EE 21 Open thermocouple detection OTD 2 paite pce E EE RE E aise aes E A 21 External Components oi eoe ee R T A E A AE a A ER bleu eee d 21 Screw terminal ARR 22 i ATEAN TA port 1 e See els T E EEE EE EEEE T 22 External power Connector een eX RR ERR EO A AEE E Ee Ra A EF EP RENE AES 22 MD ee UBND 22 LINK ACTIVILY LED NE 23 Digital l
19. up as an alarm the bit is configured for output and assumes the state defined by the alarm configuration 18 WEB TC User s Guide Signal I O Connections Pull up down terminal PU D All digital I O lines are connected through 47k to the PU D pin which is floating by default For a pull up configuration connect the PU D pin to the 5V pin For a pull down configuration connect the PU D pin to the GND pin Ground terminals AGND and GND The analog ground AGND terminals pins 9 19 28 38 provide a common ground for the thermocouple input channels The AGND pins are isolated from the GND pin and from earth ground Thermocouple sensors can connect to voltages that are referenced to earth ground as long the isolation between the AGND pins and earth ground is maintained The digital ground GND terminal pin 48 provides a common ground for the digital I O channels The GND pin is isolated from the AGND pins and from earth ground Power terminal 5V The 5V output terminal is isolated 500 VDC from the thermocouple input channels Caution The 5V terminal is an output Do not connect an external power supply to this terminal or you may damage the WEB TC and possibly the computer Thermocouple connections A thermocouple consists of two dissimilar metals that are joined together at one end When the junction of the metals is heated or cooled a voltage is produced that correlates to temperature The WEB TC makes fully
20. B TC directly to a computer Use this procedure to connect the WEB TC directly to a computer This scenario provides local access only and requires that you set up your computer to use a static IP address for communication with the WEB TC If you are not using a network hub a CAT 5 or higher crossover cable is required to connect to the computer s Ethernet port If you are connecting to your computer through a network hub or switch the Ethernet cable provided with your device can be used Knowledge of network configuration is required If you are not familiar with network configurations and have questions regarding your network settings consult your network administrator or a computer professional 1 Select Start gt Control Panel gt Network Connections 2 Double click on Local Area Connection 3 Select Internet Protocol TCP IP and click Properties 13 WEB TC User s Guide Installing the WEB TC Internet Protocol TCP IP Properties x General fou can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically mA Use the following IP address IP address Subnet mask Default gateway x Obtain DNS server add automatically Use the following DNS server addresses 34 Preferred DNS server Alternate DNS server S
21. DP TCP NBNS HTTP Protocols using UDP or TCP for transport communicate on their IETF assigned ports for example HTTP on TCP port 80 UDP messaging protocol UDP port 54211 TCP downloading protocol TCP port 54267 HTTP 1 0 alternate port TCP port 49152 65535 not including 54267 Network name webtc_xxxxx where xxxxx is the device s serial number Network name publication via NBNS responds to b node broadcasts therefore only available on the local subnet Max number of simultaneous HTTP 3 connections Max number of non HTTP TCP 5 sockets Network security Table 15 Factory default specifications Security implementation IP address based session manager with user name password login for configuration and control transactions data is not secured Session timeout 5 minutes with no activity User name password encryption Base64 The default web page does not support encryption if Javascript is disabled in the web browser Vulnerabilities Denial of service attacks user name password spoofing script probing and simple decryption LED displays and the factory reset button Table 16 LED and button configurations POWER COMM LED top 4 75 V lt Vex lt 5 25 V On Vexr lt 4 75 V V4 5 25 V Off power fault Blinks during microcontroller communications LINK ACTTIVITY LED bottom On when there is a valid Ethernet connection and blinks when an Ethernet packet is sent or receive
22. I O Connections WEB TC screw terminal descriptions Pin Signal Name Pin Description Pin SignalName Pin Description 1 RSVD Reserved 27 RSVD Reserved 2 NC No connect 28 AGND Analog ground 3 COH CHO sensor input 29 C7L CH7 sensor input 4 COL CHO sensor input 30 C7H CH7 sensor input 5 RSVD Reserved 31 RSVD Reserved 6 RSVD Reserved 32 RSVD Reserved 7 C1H CH1 sensor input 33 C6L CH6 sensor input 8 C1L CH1 sensor input 34 C6H CH6 sensor input 9 AGND Analog ground 35 NC No connect 10 RSVD Reserved 36 RSVD Reserved 11 RSVD Reserved 37 RSVD Reserved 12 NC No Connect 38 AGND Analog ground 13 C2H CH2 sensor input 39 C5L CH5 sensor input 14 C2L CH2 sensor input 40 C5H CH5 sensor input 15 RSVD Reserved 41 RSVD Reserved 16 RSVD Reserved 42 RSVD Reserved 17 C3H CHS sensor input 43 C4L CH4 sensor input 18 C3L CH3 sensor input 44 C4H CH4 sensor input 19 AGND Analog ground 45 NC No connect 20 RSVD Reserved 46 RSVD Reserved 21 45V 5V output 47 NC No connect 22 PU D Pull up down for digital outputs 48 GND Digital ground 23 DIOO Digital Input Output 49 DIO7 Digital Input Output 24 DIO1 Digital Input Output 50 DIO6 Digital Input Output 25 DIO2 Digital Input Output 51 DIO5 Digital Input Output 26 DIO3 Digital Input Output 52 DIO4 Digital Input Output
23. To restore network settings to factory default values press and hold the device s reset button for three seconds If InstaCal is open when default settings are restored click the Refresh Boards button on nstaCal s tool bar to reflect the changes Calibrating the WEB TC The WEB TC is calibrated to the selected device settings each time a Submit or Calibrate button is pressed on a web interface configuration page or the OK button is pressed on an nstaCal board configuration page Warm up period After you configure the hardware options allow the WEB TC to warm up for 30 minutes before taking measurements This warm up time minimizes thermal drift and achieves the specified rated accuracy of measurements 16 Chapter 3 Signal I O Connections Screw terminal pin out The WEB TC has four rows of screw terminals two rows on the top edge of the housing and two rows on the bottom edge There are 26 connections on each side Signals are identified in Figure 2 Bo 88 T Bo 88 T n Or GIG 65 5 KL RF O0 00 o to O D HODDHHZTOHOZOOOO CaoOOmrmmrooztmr caoomrmcoozmezoaaaa Pl 00 O O QI CO st LO cO P 00 O O CO st LO CO Pl 00 O O QI CN CV QV CO CO CO CO CO CO C O CO CO x s SE SE SF SF SE SE SE SPOLO LO LO oooooooooo Qooooooooooooooo oOooQo0000000 Figure 2 WEB TC screw terminal pin numbers Do not make connections to the terminals labeled NC or RSVD 17 WEB TC User s Guide Signal
24. WEB TC 8 Channel Thermocouple Measurement with Web Interface User s Guide MEASUREMENT COMPUTING WEB TC 8 Channel Thermocouple Measurement with Web Interface User s Guide A A MEASUREMENT COMPUTING Document Revision 2 December 2007 Copyright 2007 Measurement Computing Corporation Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Refer to www mccdaq com execteam html for the names titles and contact information of each key executive at Measurement Computing Thank you for choosing a Measurement Computing product and congratulations You own the finest and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support It s the embodiment of our mission To provide PC based data acquisition hardware and software that will save time and save money Simple installations minimize the time between setting up your system and actually making measurements We offer quick and simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system Limited Lifetime Warranty Most MCC products are covered by a limited lifetime warranty against defects in materials or workmanship for the life of the product to the original purchaser unless otherwise noted Any products found to be defective in material or workmanship will be repaired replaced with same or similar device
25. WEB TC to an Ethernet card installed in a computer 11 WEB TC User s Guide Installing the WEB TC Once a TCP IP connection is established you can access the web interface from devices within the same network by entering the URL that is printed on the WEB TC The device s home page will open Note To open the home page from devices installed outside of the network enter the public IP address set for the device How you access the web interface once a TCP IP connection is established depends on your configuration When the WEB TC is connected to the same network as the computer browser enter the URL that is printed on the device to open the device s home page When the WEB TC is connected to a different network as the computer browser enter the public IP address set for the device to open the device s home page Refer to Connecting to a LAN for communication across networks below for more information Connecting to a LAN for communication within a network Use this procedure to connect the WEB TC to a local area network LAN When connected all computers installed on the same network can access the WEB TC s web interface Note This procedure assumes the network server is equipped with DHCP dynamic host configuration protocol and will automatically assign an IP address to the WEB TC when it is connected to the network 1 Connect the WEB TC to the network using the Ethernet cable provided The Link Activity LED will ill
26. are paced Digital input 50 port reads or single bit reads per second typical Digital output 100 port writes or single bit writes per second typical Input high voltage 5 V mode 4 V min 5 5 V absolute max Input high voltage 43 3 V mode 2 64 V min 5 5 V absolute max Input low voltage 45 V mode 1 V max 0 3 V absolute min Input low voltage 3 3 V mode 0 66 V max 0 3 V absolute min Output low voltage IOL 2 5 mA 0 6 V max Output high voltage IOH 2 5 mA 4 3 V min 5 V mode 2 7 V 43 3 V mode Note 7 Ground pins on the WEB TC labeled GND are isolated from AGND pins and from earth ground Temperature alarms Table 7 Temperature alarm specifications Number of alarms 8 one per digital I O line Alarm functionality Each alarm controls its associated digital I O line as an alarm output The input to each alarm may be any of the analog temperature input channels When an alarm is enabled its associated I O line is set to output and driven to the appropriate state determined by the alarm options and input temperature The alarm configurations are stored in non volatile memory and are loaded at power on Alarm input modes Alarm when input temperature gt T1 Alarm when input temperature gt T1 reset alarm when input temperature goes below T2 Alarm when input temperature lt T1 Alarm when input temperature lt T1 reset alarm when input temperature
27. ation information refer to the WEB TC setup options that shipped with the device Chapter 1 Introducing the WEB TC The WEB TC is a thermocouple measurement device with a built in web server You can connect the device to an Ethernet port or hub start up your browser and view current data The WEB TC is fully supported by the Universal Library and TracerDAQ These software programs are included on the Measurement Computing Data Acquisition Software CD Web interface The WEB TC s embedded web interface provides access to current data and configuration settings using a standard web browser Browse to the device s home page by entering the URL that is printed on the device into the browser View current thermocouple measurements and channel data and configure hardware options from the device s home page Only one user can change configuration options on the device at a time The web interface is built into the device s firmware and does not need to be installed on a computer No external software is required other than a web browser and a TCP IP connection TCP IP connection A TCP IP connection is required to access the web interface Connect the device s 10Base T Ethernet port to a local or wide area network using the supplied Ethernet cable to a single computer through a hub using the supplied Ethernet cable or directly to a computer using a standard CAT 5 crossover cable Browser requirement The web browser used to acc
28. cate with the WEB TC Contact your network administrator or computer professional Check whether DHCP is enabled on the network server You can determine whether DHCP is enabled on the network server open a DOS Command Prompt and enter ipconfig all Your computer will display additional TCP IP information including the status of DHCP on the network server Contact your network administrator regarding network settings Changes to network configuration should only be performed by your network administrator or computer professional Verify that the computer is connected to the network You can ping Packet InterNet Groper the computer to verify that it is connecting to your network Ping is a diagnostic utility used to send a request to a device The device then returns a response Enter ping followed by the IP address of the computer Using the address returned in the example above with ipconfig enter ping 127 0 0 01 and press the Return key This address tells the computer to test its network setup 25 WEB TC User s Guide Ethernet Troubleshooting If your computer is connected to the network a message similar to the one shown here is returned Command Prompt Microsoft Windows XP Version 5 1 2606 lt C Copyright 1985 2661 Microsoft Corp C Documents and Settings JMS gt ping 127 6 6 61 Pinging 127 0 0 1 with 32 bytes of data from 127 0 0 1 bytes 32 time lt ims TTL 128 from 127 0 0 1 bytes 32 tim
29. cted to a different network such as over the internet you must change the network configuration of the network router In the following procedure the WEB TC is installed at the host LAN and the computer is installed at the client LAN Caution This procedure should only be performed by a network administrator or computer professional Incorrect settings can significantly disrupt a network 1 Connectthe WEB TC to a LAN host that has access to the Internet using the cable provided The Link Activity LED will illuminate steady green to indicate that you have established a valid Ethernet connection 2 Configure the WEB TC at the host LAN to access the web page o Assign a fixed private static IP address to the WEB TC 12 WEB TC User s Guide Installing the WEB TC o Configure the firewall router to map a static public IP address to the private IP address assigned above Record this address for use in step 3 o Configure the firewall router to forward incoming traffic from the public IP address to the HTTP port port 80 of the private static IP address Note If your network has an HTTP server already running network address translation NAT allows different ports to redirect to the WEB TC on port 80 Contact your network administrator or computer professional for more information Note To access the device using nstaCal and the Universal Library configure the firewall to allow incoming traffic to the UDP por
30. d Factory reset button When held for 3 seconds the POWER LED will turn off for a short time indicating a reset is in process When the POWER LED turns back on reset is complete and the factory default network settings have been restored Environment Table 17 Environmental specifications Operating temperature range 0to55 C Storage temperature range 40 to 85 C Humidity 0 to 90 non condensing Mechanical Table 18 Mechanical specifications Dimensions 127 mm L x 88 9 mm W x 35 56 H 33 WEB TC User s Guide Specifications Screw terminal connector type and pin out Table 19 Screw terminal connector specifications Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Table 20 Screw terminal pin out Pin Signal Name Pin Description Pin SignalName Pin Description 1 RSVD Reserved see Note 10 27 RSVD Reserved see Note 10 2 NC No connect see Note 10 28 AGND Analog ground 3 COH CHO sensor input 29 C7L CH7 sensor input 4 COL CHO sensor input 30 C7H CH7 sensor input 5 RSVD Reserved see Note 10 31 RSVD Reserved see Note 10 6 RSVD Reserved see Note 10 32 RSVD Reserved see Note 10 7 C1H CH1 sensor input 33 C6L CH6 sensor input 8 C1L CH1 sensor input 34 C6H CH6 sensor input 9 AGND Analog ground
31. e lt ims TTL 128 from 127 0 0 1 bytes 32 time lt ims TTL 128 from 127 0 0 1 bytes 32 time lt ims TTL 128 Ping statistics for 127 0 0 1 Packets Sent 4 Received 4 Lost z loss Approximate round trip times in milli seconds Minimum ms Maximum ms Average Gms C Documents and Settings JMS gt If your computer is not connected to the network a Request timed out error ora Destination host unreachable message is returned Check with your network administrator Verify the network path to the WEB TC You can ping the WEB TC to verify that the network path from the computer to the device is set up correctly Enter ping followed by the IP address of the WEB TC For example enter ping 192 168 0 10 and press the Return key If you can successfully communicate with the WEB TC a message similar to the one below is returned Command Prompt C Documents and Settings JMS gt ping 192 168 0 10 Pinging 192 168 0 10 with 32 bytes of data 192 168 0 10 bytes 32 time ims TTL 108 192 168 0 10 bytes 32 time lt ims TTL 160 192 168 0 10 bytes 32 time lt ims TTL 160 Reply from 192 168 010 bytes 32 time lt ims TTL 166 Ping statistics for 192 168 0 10 Packets Sent 4 Received 4 Lost x loss Approximate round trip times in milli seco Minimum ms Maximum ims Average ms C Documents and Settings JMS gt If a Request timed out error or a Destination ho
32. e network configuration Perform the procedures below to verify the physical and network connections Contact your network administrator for issues with your network configuration Measurement Computing provides technical support for WEB TC connectivity and operation only For networking issues contact your network administrator or computer professional Check the WEB TC status LEDs 1 Verify the external power connection When external power is supplied to the WEB TC the POWER COMM LED illuminates steady green o Ifthe POWER COMM LED is off check the power cable and the socket that the cable is plugged into If the cable is good plugged in and the power to the socket is on then the WEB TC is not powering up correctly Contact MCC technical support Refer to Getting help on page 27 for contact information 2 Verify the Ethernet connection The LINK ACTIVITY LED illuminates steady green when the WEB TC is connected to an active Ethernet hub or switch o Ifthe LINK ACTIVITY LED is off verify that the Ethernet cable is the correct type that it is not damaged and that it is connected correctly between the WEB TC and a known functional server hub switch or connected to your computer if you are connected directly o Ifthe Ethernet cable is plugged into a wall socket check with your Network Administrator or computer professional that the wall socket is active and that it is connected to an active Ethernet hub or switch If you
33. easure the average temperature at the terminal block so that the cold junction voltage can be calculated A software algorithm automatically corrects for the additional thermocouples created at the terminal blocks by subtracting the calculated cold junction voltage from the analog input s thermocouple voltage measurement Increasing the thermocouple length If you need to increase the length of your thermocouple use the same type of thermocouple wires to minimize the error introduced by thermal EMFs Data linearization After the CJC correction is performed on the measurement data an on board microcontroller automatically linearizes the thermocouple measurement data using National Institute of Standards and Technology NIST linearization coefficients for the selected thermocouple type The measurement data is then output as a 32 bit floating point value in the configured format voltage or temperature Open thermocouple detection OTD The WEB TC is equipped with open thermocouple detection for each analog input channel OTD is automatically enabled when the channel pair is configured for thermocouple sensors With OTD any open circuit or short circuit condition at the thermocouple sensor is detected by the software An open channel is detected by driving the input voltage to a negative value outside the range of any thermocouple output The software recognizes this as an invalid reading and flags the appropriate channel The firmware
34. ess the WEB TC s web interface must support JavaScript The web interface was tested with the following browsers for compatibility Mozilla Firefox 2 x Microsoft Internet Explorer 6 x Microsoft Internet Explorer 7 x WEB TC features The WEB TC provides eight thermocouple channels and eight digital I O channels An external supply shipped with the device provides power On board LEDs display the status of communication and external power All hardware configurable options are selectable with the web browser or nstaCal Network configurable options are settable with JnstaCal When using nstaCal if the login settings have been changed from the default a login name and password are required to change the configuration settings Thermocouple input channels The WEB TC provides eight differential thermocouple input channels A 24 bit analog to digital A D converter is provided for each pair of analog inputs You can take measurements from type J K R S T N E and B thermocouples The thermocouple type is software programmable for each channel Four cold junction compensation CJC sensors are provided for thermocouple measurements Each CJC sensor is dedicated to two thermocouple input channels An open thermocouple detection feature lets you detect a broken thermocouple An on board microprocessor automatically linearizes the measurement data WEB TC User s Guide Introducing the WEB TC Alarms The WEB TC features ei
35. ext is used for the names of objects on the screen such as buttons text boxes and check boxes For example 1 Insert the disk or CD and click the OK button italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase For example The nstaCal installation procedure is explained in the Quick Start Guide Never touch the exposed pins or circuit connections on the board Where to find more information The following electronic documents provide helpful information relevant to the operation of the WEB TC MCC s Specifications WEB TC the PDF version of the Specifications chapter in this guide is available on our web site at www mccdag com pdfs WEB TC pdf MCC s Quick Start Guide is available on our web site at www mccdag com PDFmanuals DA Q Software Quick Start pdf MCC s Guide to Signal Connections is available on our web site at www mccdaq com signals signals pdf MCC s Universal Library User s Guide is available on our web site at www mccdag com PDFmanuals sm ul user guide pdf MCC s Universal Library Function Reference is available on our web site at www mccdaq com PDFmanuals sm ul functions pdf MCC s Universal Library for LabVIEW User s Guide is available on our web site at www mccdaq com PDFEmanuals SM UL Lab VIEW pdf WEB TC User s Guide this document is also available on our web site at www mccdaq com PDFmanuals WEB TC pdf For install
36. faces the voltage differential between multiple thermocouples must remain within 1 4 V For best results we recommend the use of insulated or ungrounded thermocouples when possible Maximum input voltage between analog input and ground The absolute maximum input voltage between an analog input and the isolated AGND pins is 25 VDC when the WEB TC is powered on and 40 VDC when the WEB TC is powered off If you need to increase the length of your thermocouple use the same type of thermocouple wires to minimize the error introduced by thermal EMFs Digital I O connections Connect up to eight digital I O lines to the screw terminals labeled DIOO to DIO7 Configure each digital bit for either input or output All digital I O lines are connected through 47k to the PU D pin which is floating by default For a pull up configuration connect the PU D terminal to the 5V terminal For a pull down configuration connect the PU D terminal to the GND terminal When configuring the digital bits for input the digital I O terminals can detect the state of a TTL compatible device The ground GND terminal pin 48 provides a common ground for the digital I O channels Refer to the schematic shown in Figure 4 If the switch is set to the 5V input DIOO reads TRUE 1 If the switch is moved to GND DIOO reads FALSE 0 DIOO Digital GND 5V Figure 4 Schematic showing switch detection by digital channel DIOO When configur
37. ght independent temperature alarms Each alarm controls an associated digital I O channel as an alarm output The input to each alarm is one of the temperature input channels The output of each alarm is software configurable as active high or low The user configurable threshold conditions activate each alarm When an alarm is activated the associated DIO channel is driven to the active output state selected Digital I O channels Eight digital I O channels are provided to communicate with external devices and to generate alarms The digital bits are software programmable for input or output The digital output voltage is switch selectable for 3 3 V or 5 V logic A screw terminal is provided for pull up or pull down configuration The digital I O channels power up in input mode unless the bit is configured for an alarm When a digital bit is configured as an alarm that bit is configured as an output and assumes the state defined by the alarm configuration If you need to log data or display data graphically The WEB TC displays current data read from the device and does not log or store historical data For logging or trending needs use the TracerDAQ software included on the Measurement Computing Data Acquisition Software CD WEB TC block diagram WEB TC functions are illustrated in the block diagram shown here RJ 45 Ethernet Port Controller LIN oum A NE 16 bit 40 MIPS ERE mee m See Se
38. hannel active high or low when activated When an alarm is enabled its associated I O line is set to output and driven to the appropriate state determined by the alarm options and input temperature Alarm configuration settings are stored in non volatile memory and are loaded on power up 20 Chapter 4 Functional Details Thermocouple measurements The WEB TC hardware level shifts the thermocouple s output voltage into the A D s common mode input range by applying 2 5 V to the thermocouple s low side at the C L input Always connect thermocouple sensors to the WEB TC in a floating fashion Do not attempt to connect the thermocouple low side C L to GND or to a ground referencing resistor Cold junction compensation CJC When connecting the thermocouple sensor leads to the sensor input channel the dissimilar metals at the WEB TC terminal blocks produce two additional thermocouple junctions This junction creates a small voltage error term which must be removed from the overall sensor measurement using a cold junction compensation technique The measured voltage includes both the thermocouple voltage and the cold junction voltage To compensate for the additional cold junction voltage the WEB TC subtracts the cold junction voltage from the thermocouple voltage The WEB TC has four high resolution CJC temperature sensors integrated into the design The CJC sensors are configured as one sensor for each channel pair CJC sensors m
39. i saa Advanced 4 Select Use the following IP address option and enter the following o IP address Enter 192 168 0 102 Note that the last three digits of this number can be any number between 11 and 254 inclusive but must be different from the IP address assigned to the device The default IP address set for the WEB TC is 192 168 0 101 Subnet mask Enter 255 255 255 0 Default gateway Enter 192 168 0 1 Caution Assigning an arbitrary IP address could result in duplicate IP addresses on the network This condition can cause a communication failure that affects both devices Make sure when configuring static IP addresses that you set different addresses for each device 5 Click OK 6 Connect the WEB TC s Ethernet port to your Ethernet hub using the supplied cable or to your computer s Ethernet port using a CAT 5 or higher crossover cable Note If you connect to an Ethernet hub you can use the Ethernet cable shipped with the device If you have multiple WEB TC devices configure each device separately and assign a unique IP address to each device You ll need to run nstaCal to change the IP address from the default 192 168 0 101 When connected the Link Activity LED illuminates steady green to indicate that you have established a valid Ethernet connection and blinks indicating network traffic Refer to Figure 5 on page 22 for the location of the Link Activity LED 7 Open your browser and enter the URL address that is p
40. ications range Parameter Conditions Specification A D converters Four dual 24 bit Sigma Delta type Number of channels 8 differential Input isolation 500 VDC minimum between field wiring and power supply input Channel configuration Software programmable to match sensor type Differential input voltage Thermocouple 0 080 V Absolute maximum input C0x through C7x relative to 25 V power on voltage AGND pins 9 19 28 38 40 V power off Input impedance 5 Gigohm power on 1 Mohm power off Input leakage current Open thermocouple detect disabled 30 nA max Open thermocouple detect enabled 105 nA max Common mode rejection ratio fix 60 Hz 100 dB min ADC Resolution 24 bits ADC No missing codes 24 bits Input coupling DC Warm up time 30 minutes min Open thermocouple detect The maximum open detection time is 3 seconds CJC sensor accuracy 15 C to 35 C 0 75 C to 0 5 C max 0 C to 55 C 1 5 C to 1 25 C max Channel configurations Table 2 Channel configuration specifications Sensor Category Conditions Specification Thermocouple J K S R B E T or N 8 differential channels Note 1 Channel configuration information is stored on a EEPROM external to the isolated microcontroller by the firmware whenever any item is modified Modification is performed by commands issued over
41. ing for the WEB TC is Enabled Disable this setting when the server is not DHCP enabled or when entering a static IP address Unless there is a reason to disable DHCP such as the network server is not DHCP enabled we recommend that you leave DHCP enabled IP The Internet Protocol IP address that is stored on the device Use this address when a DHCP server is not available or when DHCP is disabled Subnet The Subnet Mask that is stored on the device The Subnet Mask is the part of the IP address that denotes the local Subnet Use this address when a DHCP server is not available or when DHCP is disabled Gateway The Gateway IP address that is stored on the device Use this address when a DHCP server is not available or when DHCP is disabled A gateway is the IP address of the device that bridges subnets within a network Server Enables or disables the device s web page server Enable this value to view the device s web page with a browser Disable access to the web page when you want to restrict access to the device to nstaCal or the Universal Library API User Name and Password The user name and password used to log in to a device session Log in is required only when changing configurable options on the device Default values can be changed with InstaCal A unique 64 bit physical MAC address is also assigned to the device This address is set at the factory and is not user configurable Restoring factory default network settings
42. ing the digital bits use the switch on the side of the device to set the voltage to either 5 V or 3 3 V see page 23 for more information Refer to the digital I O specification on page 31 for the maximum and minimum threshold levels for each setting If a digital bit is set up as an alarm that bit is configured for output and assumes the state defined by the alarm configuration Caution The ground pin labeled GND pin 48 is isolated from the AGND pins and from earth ground If a connection is made to earth ground and AGND the thermocouples are no longer isolated In this case thermocouples must not be connected to any conductive surfaces that may be referenced to earth ground For general information regarding digital signal connections and digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdaq com signals signals pdf Configuring the DIO channels to generate alarms The WEB TC features eight independent temperature alarms All alarm options are configurable using the web browser or nstaCal When a digital bit is configured as an alarm that bit will be configured as an output on the next power cycle and assume the state defined by the alarm configuration Each alarm controls an associated digital I O channel as an alarm output The input to each alarm is one of the thermocouple input channels You set up the temperature conditions to activate an alarm and the output state of the c
43. m the ping of the public network but still cannot communicate with the WEB TC check the following A unique fixed static IP address has been assigned to the WEB TC The firewall is configured to allow incoming traffic to the HTTP port port 80 for access to the web page The firewall is configured to allow incoming traffic to the UDP port port 54211 by default for access through nstaCal and the Universal Library The network at the public IP address is configured to access the fixed address assigned to the WEB TC Contact your network administrator regarding firewall settings Changes to network configuration should only be performed by your network administrator or computer professional Check cached information When your network configuration changes for example when you change the static address on one of your devices you may have obsolete information on PCs that have previously accessed your device You may be able to update this information simply by disconnecting the network cable from the PC on which the problem exists and reconnecting it After a short time the cached information should update If this doesn t work the following procedures may help Deleting a NetBIOS table entry If NetBIOS is enabled nbtstat c will provide a list of names and IP addresses If the webtc name is listed check the associated IP address If it is different try typing nbtstat R to purge the NetBIOS cache
44. mpatibility EN 61326 1997 Amendment 1 1998 Emissions Group 1 Class A EN 55011 1990 CISPR 11 Radiated and Conducted emissions Immunity EN61326 Annex A EC 61000 4 2 1995 Electrostatic Discharge immunity Criteria B EC 61000 4 3 1995 Radiated Electromagnetic Field immunity Criteria B EC 61000 4 4 1995 Electric fast transient burst immunity Criteria B EC 61000 4 5 1995 Surge immunity Criteria A EC 61000 4 6 1996 Radio frequency common mode immunity Criteria B EC 61000 4 8 1994 Power frequency magnetic field immunity Criteria A TEC 61000 4 11 1994 Interrupt immunity Criteria A Declaration of Conformity based on tests conducted by Chomerics Test Services Woburn MA 01801 USA in August 2007 Test records are outlined in Chomerics Test Report EMIA891A 07 We hereby declare that the equipment specified conforms to the above Directives and Standards Carl Haapaoja Director of Quality Assurance Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdag com www mccdag com
45. n into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corporation products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people Table of Contents Preface About this User s Guide ccccsccsteessneeeseeeseaesesneeseeneeseseesseaesusneeeasneeseaesssaaesasneesesneeseaesdseaeseaneeesenens 7 What you will learn from this user s guide eeeeseesseseeeee eene eene eene nre nennen enne nennen nenne 7 Conventions in this user s guide teen eeaeee a a enen trennt trennen ensa i ein enne 7 Where to find more information Chapter 1 Introducing the WEB TG 2 iiec encase seessacteeseceedsted usscco so aiani oi kans di aeiae Sanada rai 8 Webnterface z o oon phe dei bee ped D eee P PO P e tee RE 8 TCP IP connection oio aom ne RE EIU uito dme 8 Browser requirement E ER 8 WEB TC features ics eter Eg p RUE D RERBA UE EEE AOL CIE RU Er E OO E EOE Io Pr FLORE De EE FRE EP vede re etg en 8 Thermocouple input channels 2 3 er tea ee e e e aT i E e D OY RE aes 8 Al arin cett Dieital I O channels a x1 ets etti tt Mo EE AL t pe Sok SE ENEE ups es 9 WBB TC block di gr ani cire ttg pie RUE D e EBORE De C ed ERG Rete 9 Software features i onis es etae don a ER ERE e ER damie
46. n neta 9 Chapter 2 Installing the WEB T e 10 What comes with your WEB TC shipment sees nennen nennen nre ene tnen nenne trennt 10 Hardware VuhipteiiKivenntancan ms 11 Unpacking the WEB IC ii eit hehe Pie ele ten eS ee H 11 Installing the software i aet cn canst cedavecsans cas deeedovsdaduasnuceseasibcsddecasceccdetheedensasenceadedacdecdateccdedecedendaece 11 Connecting the AC power adapter i e c ee aE EE EEE T aN EEEa ea e 11 Connecting the WEBB TC Sco ae a A SE A Be ae 11 Connecting to a LAN for communication within a network eese nennen ener 12 Connecting to a LAN for communication across networks seseseeeeseeeeeeeeeeeeeeee nennen ene eterne nennen nnne 12 Connecting the WEB TC directly to a computer essent nennen hene nennen tenete enne ne nne nnennene 13 Using th webntert ce ose xe pe it ek qe qe te idl E tet dese piede oreet 14 Logging I div E L 15 Configunng the WEBETC usins ZnstaCal trt tee tbe tee eto ei ER Ot Pre el eere ted 15 Settins the net work parameters euet eee tee t e d ete cm 15 Calibrating the WEB TO oe snide P S Cm nine or b mein tre ho e p ARP oes 16 Warm up penod e TESS 16 Chapter 3 Signal 1 O Connections ean a ea a rea aa aa pa a a am rra e da Aaaah inani nnns Aopare ss ansa snas snmma natn ns Screw terminal pin
47. ogic voltage switch Factory default reset D tton 2 5 eee A Ee REN eee A Eee 23 Chapter 5 Ethernet Troubleshooting nss rsks onesna rosi oaaae aaa raada Na aasa Eo Naua oada raae Naaa reisi an Check the WEB TC status LEDS sisi iere o e EEE bre eer e hie EE a Woda hovers cadena Check the network settings on the computer Check whether DHCP is enabled on the network server Verify that the computer is connected to the network essere 25 Verify the network path to the WEB TC Verify the network path to a remote WEB TC Check cached information 5 5 deer rte EO o apro pb ten e Oe oe nes eae REOR EN Deleting a NetBIOS table entry eseeeeseeeeeeeeeneeeeeneneneenee eene eee eeraa ie raaa nean o eaae rea ennt aa ne Dele ng an ARP t blez 5 iss as ne na O EUER OA VEA EENEN Getting help vaca SERERE n eSI Chapter 6 Specifications Analog IDnpUt i Ay iden eiecit edidere e D REIR t rete que n riti he PIER Channel config ratiOns ona rece e VI Reo Or lebe EL Rr HR Eo Pe ERE ERE DERE ese lean 28 Compatible thermocouples 21 2 Letter eee eret aee Here hee rere orta leere V rp edet edere Dedi 29 ACCULACY aie bebe meteo m e aibi epic IDEO dre 29 Thermocouple measurement accuracy 5 2 entere erret ye etre drea Stern E AEEA Ai PESENE IED TSSEA sATA ETATE 29 INGCWOTI 2 8 cnra Sette te p o e tete e ebat aee eto E re s dor red ruat Ethernet compliance Ethernet connection
48. pplies at barrel plug power input The power supply provided with the board meets this specification at the rated total power supply current If a different power supply is used small line resistances could cause significant voltage drop between the power supply and the barrel plug input Note 9 This is the total current requirement for the WEB TC which includes up to 20 mA for the LEDs and 10 mA for the user voltage output Network Ethernet compliance Table 11 Ethernet compliance specifications Device type IEEE 802 3 Ethernet 10Base T Device compatibility IEEE 802 3 2003 10 Mpbs Media Access Control Ethernet connection Table 12 Ethernet connection specifications Ethernet type 10Base T Connector RJ 45 8 position Cable CAT 5 shielded unshielded twisted pair Length 100 meters max MAC address 00 12 71 Cx xx xx where xxxxx is the device s serial number Network factory default settings Table 13 Factory default specifications Factory default IP address 192 168 0 101 Factory default subnet mask 255 255 255 0 Factory default Gateway 192 168 0 1 Factory default DHCP setting Enabled Factory default user name webtc Factory default password mccdaq Web Server Enabled 32 WEB TC User s Guide Specifications Network protocols Table 14 Factory default specifications Protocols implemented IP ARP ICMP DHCP U
49. rement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation Windows Microsoft and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation LabVIEW is a trademark of National Instruments CompactFlash is a registered trademark of SanDisk Corporation XBee and XBee PRO are trademarks of MaxStream Inc All other trademarks are the property of their respective owners Information furnished by Measurement Computing Corporation is believed to be accurate and reliable However no responsibility is assumed by Measurement Computing Corporation neither for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corporation All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without prior written consent from Measurement Computing Corporation Life support devices systems are devices or systems which a are intended for surgical implantatio
50. rinted on the device label The WEB TC Measurements page opens You can view current measurement data from this page Configuring the WEB TC All hardware options are configurable with nstaCal or the web interface JnstaCal must be used if any of the network parameters need to be changed such as the IP address of your device Configuration settings are stored in non volatile memory in EEPROM and are loaded on power up Refer to the sections Using the web interface below and Configuring the WEB TC using nstaCal on page 15 for detailed information Using the web interface You can view current measurements and configure hardware options from the device s web interface The web interface provides four tabs Each tab represents an HTML page that is stored on the device Measurements tab home page lists the thermocouple measurements digital values and alarm status read from each channel on the WEB TC 14 WEB TC User s Guide Installing the WEB TC System Info tab summarizes the current network settings set for the WEB TC and provides a button that when pressed flashes the POWER COMM LED on the device Settings on this tab are not configurable via the web interface use nstaCal to configure network settings Configuration tab provides separate menu options for configuring your thermocouple digital and alarm options To change configuration settings enter the user name default is webtc and password
51. st unreachable message is returned the network settings may not be set correctly Press the RESET button on the WEB TC to reset the network configuration settings to factory default values If DHCP is enabled an IP address is automatically assigned to the device If DHCP is not enabled assign the device a unique static IP address and re establish communication with the WEB TC Refer to Connecting the WEB TC directly to a computer on page 13 for information on how to assign a static IP address If the RESET button does not restore the network settings the microcontroller on the WEB TC may not be working Contact MCC technical support Refer to Getting help on page 27 for contact information Contact your network administrator regarding network settings professional Changes to network configuration should only be performed by your network administrator or computer 26 WEB TC User s Guide Ethernet Troubleshooting Verify the network path to a remote WEB TC You can ping the network where the WEB TC is installed to verify that the network path from the computer to a device installed on a different network is set up correctly Enter ping followed by the public IP address of the network where the WEB TC is installed Ifa Request timed out error or a Destination host unreachable message is returned verify that you have the correct public address for the network where the WEB TC is installed If you get a response fro
52. supply MCC p n PS 5V2AEPS to power the WEB TC POWER COMM LED The POWER COMM LED upper LED is steady green when external power is supplied The WEB TC has an on board voltage supervisory circuit that monitors the 5 V external power supply The table below explains the function of the POWER COMM LED LED Indication Steady green 4 75 V to 5 25 V external power is supplied to the WEB TC Off Check the following External power is not supplied verify that the supply is connected to the external power connector A power fault has occurred A power fault occurs when the input power falls outside of the specified voltage range of the external supply 4 75 V to 5 25 V 22 WEB TC User s Guide Functional Details LINK ACTIVITY LED The LINK ACTIVITY LED lower LED blinks green when a data packet is sent or received over the Ethernet connection The table below explains the function of the LINK ACTIVITY LED LED Indication Blinking green Data is being transmitted or received over the Ethernet connection Steady green The Ethernet is idle Your network traffic has reached its maximum limit and no communication is possible Check with your Network Administrator The Ethernet cable is not connected to the WEB TC The Ethernet cable is not connected to the network The Ethernet cable is damaged The Ethernet cable is not the correct type a crossover cable is required for a direct connection
53. sword Note For security purposes do not change the log in information to the name and password used to access secure accounts such as a credit card or bank account Setting the network parameters Use InstaCal to change configurable network settings set on the WEB TC The network parameters are not accessible via the web interface The device is shipped configured with the following default settings 15 WEB TC User s Guide Installing the WEB TC Default network settings Network setting Default value Identifier not set optional DHCP setting Enabled IP address 192 168 0 101 Subnet mask 255 255 255 000 Gateway 192 168 0 1 Server Enabled User name webtc Password mccdaq MAC address 00 12 71 Cx xx xx where xxxxx is the device s serial number read only The following default network parameters are programmable with JnstaCal Identifier Text that identifies the device This value is optional and is not set by default Up to 48 alpha numeric characters can be entered DHCP Enables configuration by a DHCP Dynamic Host Configuration Protocol Server DHCP is a service that automatically assigns IP addresses to clients supporting the protocol If the connected network has a DHCP server the WEB TC should be assigned an IP address shortly after it is powered up and attached to the network nstaCal will display the IP address assigned to the WEB TC The default DHCP sett
54. t port 54211 by default 3 Atthe client LAN open your web browser and enter the public IP address recorded in step 2 above Note To access the WEB TC by name a DNS entry must be assigned The WEB TC Measurements page opens You can view current measurement data from this page A log in name and password are required to change configuration settings Accessing the WEB TC using nstaCal and the Universal Library InstaCal cannot automatically detect a WEB TC that is installed on a different subnet To change configuration settings with nstaCal or communicate with a WEB TC using programs written with the Universal Library manually add the public IP address to nstaCal InstaCal can then search the public address provided for the WEB TC We recommend that the port number be set to 54211 for use with InstaCal and the Universal Library Port 80 is used for the web interface For information on port configuration contact your network administrator or computer professional Configuring the WEB TC All hardware options are configurable with nstaCal or the web interface JnstaCal must be used if any of the network parameters need to be changed such as the IP address of your device Configuration settings are stored in non volatile memory in EEPROM and are loaded on power up Refer to the sections Using the web interface on page 14 and Configuring the WEB TC using nstaCal on page 15 for detailed information Connecting the WE
55. t rate Table 5 Throughput rate specifications Number of Input Channels Maximum Throughput 2 Samples second 2 S s on each channel 4 S s total 2 S s on each channel 6 S s total 2 S s on each channel 8 S s total 2 S s on each channel 10 S s total 2 S s on each channel 12 S s total 2 S s on each channel 14 S s total CONTI HD NW BR wlrm re 2 S s on each channel 16 S s total Note 6 The analog inputs are configured to run continuously Each channel is sampled twice per second The maximum latency between when a sample is acquired and the temperature data is provided by the Ethernet unit is approximately 0 5 seconds 30 WEB TC User s Guide Specifications Digital input output Table 6 Digital input output specifications Digital type CMOS Number of I O 8 DIOO through DIO7 Configuration Independently configured for input or output Switch selectable output voltages 5 V and 3 3 V Power on conditions Power on reset is Input mode except when bits are configured to operate as alarms Pull up pull down configuration All pins are connected to 47 kOhm resistors that share a common point accessible at Pin 22 of the device PU D This pin is floating by default and is user configurable via external connection For pull up mode connect this pin to Pin 21 5V For pull down mode connect this pin to Pin 48 GND Digital I O transfer rate softw
56. tart Guide available in PDF at www mccdaq com PDFmanuals DA Q Software Quick Start pdf This booklet supplies a brief description of the software you received with your WEB TC and information regarding installation of that software Please read this booklet completely before installing any software or hardware An overview of installation options is provided in the WEB TC setup options page that ships with the device Detailed installation information is provided in this user s guide Unpacking the WEB TC As with any electronic device you should take care while handling to avoid damage from static electricity Before removing the WEB TC from its packaging ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge If your WEB TC is damaged notify Measurement Computing Corporation immediately by phone fax or e mail Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com For international customers contact the local distributor where you purchased the WEB TC Click on this link www measurementcomputing com sales asp to locate your distributor Installing the software Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data Acquisition Software CD This booklet is available in PDF at www
57. uminate steady green to indicate that you have established a valid Ethernet connection 2 Open your web browser and enter the URL that is printed on the device label The WEB TC Measurements page opens You can view current measurement data from this page A log in name default is webtc and password default is mccdaq are required to change configuration settings If the WEB TC is not recognized by the network If the WEB TC Measurements page does not open the server may not have DHCP or DHCP may be disabled on the server In either situation assign a static IP address to the WEB TC before connecting to the network Refer to Connecting the WEB TC directly to a computer on page 13 for instructions After you assign the static IP address connect to the network using the standard Ethernet cable shipped with the device open the browser and enter the static IP address Configuring the WEB TC All hardware options are configurable with nstaCal or the web interface JnstaCal must be used if any of the network parameters need to be changed such as the IP address of your device Configuration settings are stored in non volatile memory in EEPROM and are loaded on power up Refer to the sections Using the web interface on page 14 and Configuring the WEB TC using nstaCal on page 15 for detailed information Connecting to a LAN for communication across networks In order to communicate with the WEB TC from a computer conne
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