DAT 400 Manual 0.5 - Elettronica Lucense
Contents
1. Code Description 1 ILLEGAL FUNCTION The function is not valid or not supported 2 ILLEGAL DATA ADDRESS The specified data address is not available 3 ILLEGAL DATA VALUE The data value received is not valid 35 List of the Holding Registers 4x Modbus Description Range Value Stored in Address E2prom Set Points and Weight values Relevant menu 40001 Set point 1 temporary 0 to full scale NO 40002 Set point 2 temporary 0 to full scale NO 40003 Command register 01 05 10 12 13 20 See relative table Hex page 39 40004 Set point 1 permanent SET 1 0 to full scale YES 40005 Set point 2 permanent SET 2 0 to full scale YES 40006 Gross weight value H 0 to full scale 40007 Gross weight value L 40008 Input status byte See relative table page 38 40009 Net weight value H 0 to full scale 40010 Net weight value L Peak Value 40020 Peak gross weight 0 to full scale NO Command data and status registers 40081 Command data register 11 Hex See relative table page 39 40082 Status register 00 03 05 Hex See relative table page 39 40083 Status data register 06 Hex See relative table page 39 Basic Configuration 40100 Load cell s total capacity kg H CAPAC 0 500000 1 YES 40101 Load cell s total capacity kg L 40102 Sensitivity of load cell s SENSIT 1 0000 4 0000 5 YES 40103 Net weig2. 5 5 FUNCTION 5 FORCE SINGLE COIL QUERY Address Function Output address Status of output 2 byte Total byte A 0x05 0 x 0000 0 x FFOO CRC 8 RESPONSE Address Function Output address Status of output 2 byte Total byte A 0x05 0 x 0000 0 x FFOO CRC 8 Status of output FFOO On 0000 Off The response includes the echo of the query 5 6 FUNCTION 6 PRESET SINGLE REGISTER QUERY Address Function Register address Register value 2 byte Total byte A 0x06 0 x 0000 0 x 1234 CRC 8 RESPONSE Address Function Register address Register value 2 byte Total byte A 0x06 0 x 0000 0 x 1234 CRC 8 The response includes the echo of the query 5 7 FUNCTION 7 READ EXCEPTION STATUS NOT USED 5 8 FUNCTION 8 DIAGOSTIC NOT USED 5 11 FUNCTION 11 FETCH COMM EVENT CTR NOT USED 5 12 FUNCTION 12 FETCH COMM EVENT LOG NOT USED 5 15 FUNCTION 15 FORCE MULTIPLE COILS QUERY Address Function 1st Output address N of outputs N of bytes Status of outputs 2 byte Total byte A 0 x OF 0 x 0000 0 x 0002 0x01 0 x 00 CRC 10 RESPONSE Address Function 1st Output address N of outputs 2 byte Total byte A 0 x OF 0 x 0000 0 x 0002 CRC 8 Number of outputs Number of the output to be written starting from the address Number of bytes Number of bytes transmitted as status of outputs 8 outputs each by
3. or Complete Configuration The Basic Configuration procedure allows you to change selective parameters whereas the Complete Configuration procedure allows you to change all of the parameters For example if the transmitter requires calibration only the Basic Configuration procedure is recommended The following pages provide a detailed explanation of both configuration procedures Basic Configuration via the Front Panel To perform a Basic Configuration press and hold the PRG key until the display shows CAPAC Use either the UP or DOWN keys to navigate through the eight basic configuration sub menus shown below Display Sub menu Functions CAPAC Total capacity of transducer s SENSIT Rated output of the transducer s NET Net live weight value DEAD L Dead load weight value DSPDIV Increment size resolution SIGNAL Transducer s input signal view CALIBR Calibration procedure ANALOG Full scale value for analog output Basic Configuration cont d To set one of the following parameters CAPAC SENSIT NET DEAD L DSPDIV or ANALOG press the PRG key to view the default or previously selected value for that parameter To change the value press the O key to select a digit then use the UP or DOWN keys to increment or decrement the value of the selected digit When the desired value appears on the di
4. Command from the host The transmitter responds with the following data string In case of an error the transmitter will respond with the following data string Modbus mode The Modbus mode is used to communicate with Modicon Programmable Controllers using a unique message structure that the controllers can understand regardless of the type of networks being used Please refer to the tables on pages 29 through 39 for information regarding the MODBUS RTU Protocol Specifications Modbus and Modicon are registered trademarks of the Schneider Automation Group 23 Serial Output Wiring Connections RS 232 serial connections to a computer remote serial display or other data acquisition device See Figure 3 Figure 3 RS 422 485 multi drop serial configuration allows connection of up to 32 units to a distributed control system DCS or programmable logic controller PLC See Figure 4 for the RS422 connection and Figure 5 for the RS485 connection Figure 4 RS422 connection O60006 24 23 22 21 20 19 000000 24 23 22 21 20 19 Transmitter 32 Transmitter 1 24 Figure 5 RS485 Connection Gnd RS485 RS485 ioooooo 24 23 22 21 20 19 000000 24 23 22 21 20 19 Transmitter 32 Transmitter 1 INOVATION Software RS232 wiring to PC COM1 2 PC 9 pole sub D connector PC 25 pole sub D connector Rx Pin 2 Rx Pin 3 Tx Pin 3 Tx Pin 2 Gnd Pin 5
5. Edit Configuration Internal counts Reference only 155729 Offline Operating mode Net in A Filters z track The message Edit will appear on I the Digital filter value 0 to 9 0 no filter 9 max filter default 5 5 display showing this particular condition Motion band value 0 to 4 0 minimum 4 maximum default 2 1 Auto zero range setting at power up 0 to 10 0 of net weight 0 disble 0 0 Another useful function concern the Zero tracking 0 to 4 default 2 2 possibility to print out a report in which ae Ouipat config Out 1 m perating mode et all the parameters ofa given Contact status below setpoint value N Open config uration are included Positive Negative weight comparison Positive The Print command can be perfo rmed Immediate activation activation after stabilization Immediate eg iis An Hysteresis default 2 2 by clicking on Print Configuration Setpoint activation time length in 1 10 sec 0 disable 0 i Time delay for activating setpoint in 1 10 sec 0 disable 0 Besides the command Report Notes Output contig Out allows the operator to include a heading Operating mode Gross in the report in order to identify the plant Contact status below setpoint value N Closed i i Positive Negative weight comparison Positive the customer name or any other Immediate activation activation after stabilization Immediate useful information Hysteresis default 2 50 Setpoint activation time leng
6. Gnd_ Pin 7 Tx Rx Gnd OOOOOOOOO 19 Not only the RS232 but also the RS422 or RS485 can be used for the communication with the Inovation software Refer to Figures 3 4 5 depending on the desired connection 25 Sub menu parameter selections Table 2 PARAM Menu PARAMETERS SELECTIONS DESCRIPTION VALUES FILTER 0to9 Digital filtering value 0 no filtering See notes below Default 5 9 maximum filtering Weight stabilization 0 Weight always stable 1 slow stabilization 4 fast stabilization AUTO 0 0 0 to 10 0 Auto zero range 0 function disabled of net weight value power up 0 TRAC 0 to4 Zero tracking range 0 function disabled Default 2 0 BAND 0 to 200 divisions Zero key operating 0 function disabled See notes below Default 100 range Digital filtering affects the update rate and speed of the unit 0 BAND Filter setting 0 Update rate 25 Hz this parameter defines the operating Filter setting 1 Update rate 10 Hz range of the Zero key and Input 1 Filter setting 2 Updaterate 5 Hz ie Filter cating 3 Update rate 2 5 Hz used to zero the unit in Gross mode Filter setting 4 Update rate 1 5 Hz Filter setting 5 Update rate 1 Hz Filter setting 6 Update rate 0 7 Hz Filter setting 7 Update rate 0 4 Hz Filter setting 8 Update rate 0 2 Hz Filter setting 9 Update rate 0 1 Hz MOTION 0to4 Default 2 Table 3 SERIAL Menu PARA
7. are used when powering two transmitters from a single power supply See notes A red LED is illuminated when the power supply is ON Notes The power supply should be used to power two transmitters only when a single load cell is connected to each transmitter For multiple load cell applications it is recommended that an individual power supply be used for each transmitter This enables the power supply to compensate for any fluctuations in the incoming line voltage Recent field experiences have shown that voltage drops of greater than 10 can cause the transmitters to drift and become unstable Mains in 24 Vdc Fuse Replacement The following procedures require work inside the power supply enclosure and should be performed by qualified service personnel Before opening the unit disconnect the AC voltage Remove the front cover from the power supply Press down gently on the cover of the fuse holder and turn counter clockwise Pull out the cover and fuse as an assembly replace fuse with a new one Re install fuse and cover as an assembly press down gently and turn clockwise Replace the front cover on the power supply Re apply AC voltage to the unit In the event of a malfunction please contact the nearest distributor for assistance Any attempt to modify or repair the power supply will void the manufacturers warranty 41 EC DECLARATION OF CONFORMITY Via dei Chiosi 18 20040 CAVENAGO BRIANZA Ml Hereby decla
8. cont d NOTE In order to ensure greater stability during the calibration procedure the digital filter increases to the maximum value automatically value 9 therefore the weight indication updates very slowly at this stage Once the calibration procedure has been completed the digital filter will return to the pre vious value automatically Cont d from i the previous page C PRG Sets ZERO a calibration Enter the actual weight value SPAN PRG PRG Back to CALIBR Main menu The Precise 400 Series Transmitters can be calibrated via the front panel keys Model 400 or with the INOVATION configuration utility Both methods consist of the following steps Zero calibration Apply a known load test weight Edit weight value Span calibration Optional linearization See page 14 2 point calibration via the front panel keys To calibrate the transmitter with the front panel keys proceed as follows 1 With the unit in Basic Configuration mode and the message CALIBR displayed press the PRG key CAL will be blinking on the display 2 With the system unloaded press the O key to perform the ZERO calibration 3 Apply a known load not less than 10 of the net weight value and press the UP key NOTE Input signal from the transducer s must be stable when entering the zero and span values 4 Enter the actual weight value using
9. RECEIVED DATA If the string is received correctly but is not executable the slave answers the master with an EXCEPTION RESPONSE The field function is transmitted having the most significant digit MSD set to 1 EXCEPTION RESPONSE Address Function Exception code 2 byte A Function 80h 0x01 CRC Description of the Exception codes Code Description 1 ILLEGAL FUNCTION The function is not valid or not supported 2 ILLEGAL DATA ADDRESS The specified data address is not available 3 ILLEGAL DATA VALUE The data value received is not valid 34 6 BROADCAST MODE This function is not implemented in the instrument 7 1 COMMUNICATION ERRORS The communication strings are controlled by the CRC Cyclical Redundancy Check If a communication error occurs the slave unit doesn t answer The master unit controls a timeout when waiting for the response from the slave If the slave doesn t answer during this timeout it means that a communication error has occurred 7 2 ERRORS IN THE RECEIVED DATA If the string is received correctly but is not executable the slave answers the master with an EXCEPTION RESPONSE The field function is transmitted having the most significant digit MSD set to 1 EXCEPTION RESPONSE Address Function Exception code 2 byte A Function 80h 0x01 CRC Description of the Exception codes
10. Total capacity of transducers 10000 Full scale output value m 2 0000 Send Net weight value 8000 Dead load value 1998 Display resolution 1 Send Input signal m Reference only 0 599 Internal counts Reference only 155740 Operating mode Het v Send 10 Figure 2 1 INOVATION MAIN SETUP SCREEN Option Edit v Edit Configuration Offline Report Notes Print Configuration play Net Weight Gross Weight Device address Setpoint 1 value Setpoint 2 value C Peak Hold E nope Status Instrument Input 2 status 0 a Output Output2 Net Stable Instrument El The Inovation software also allows the PRINT CONFIGURATION operator to create new configurations Date 12 01 2004 Test Procedure for DAT instruments save new files and open existing files wi oise gee ent r thout having any instrument connec Setpoint 1 value 1500 ted to the com puter Setpoint 2 value 3500 Input 1 status 0 Thanks to this feature the download of Input 2 status 0 a Instrument software version 0 4 a given configuration to the instrument A Parameters can be performed at any time Total capacity of transducers 10000 Full scale output value mV V 2 0000 To perform the operation mentioned Net weight value 8000 above click on the Edit menu at the left Dead load value 1300 Display resolution 1 end upper corner See figure 2 1 then Input signal 0 599 enable the function
11. YES 0004 04 Hex Analog output full scale offset adjustment YES 0005 05 Hex Test input output NO 0006 06 Hex Test analog output Analog output NO 0 64000 For additional information regarding the Modbus protocol please refer to the Modbus Protocol Manual PI MBUS 300 Rev J 39 HL96Z SU H996Z 9X3 HL96Z jeuBbls S plus plus tv Bis Bis BiS BIS B ox 3x4 k 39x4 3x4 zal S plas t Bis Bis z xJ 9x3 Gal bal plaius Z Ox 9 S p us sueg S t Bis sues 7 Bis 9x3 z 9x4 BIS Z oxg BIS L xog uonjounr Bulwwns SSO epon AdAL YsledeVva NOILONNA suaiweg Ajajes SIsulnu SHONA 8 TdAddad aeg pl us aiUM jeuBis u io jeuBls AO A su s yoelg Oxy ebuelo SUBS peu OX YO109 NOILONNA J itusuei Boyeuy eyb OSY OOF IPPON VadvV SNOCYVZVH Vadv JJYS si uueg Ajayesg dISUIJ U 40 Options Precise 24 Volt Power Supply Installation Make sure the installation complies with local regulations and electrical codes Connect AC voltage to the terminals marked L and N The DC voltage is available on the terminals marked and The second set of terminals
12. installed between the Excitation and Sense leads terminals 14 to 15 and between the Excitation and Sense leads terminals 13 to 16 as shown below in Figure 1 Logic Input Connections Use terminal 4 for Input 1 and terminal 5 for Input 2 Terminal 6 is the common for both inputs These are powered inputs which require an input voltage of 24 Vdc to activate them See Figure 1 for additional information Input 1 is used to zero the unit in Gross mode tare the unit in Net mode and reset the peak value when operating in Peak Hold mode UOWWOD z indino b NAINO ets Input 1 ale Input 2 Common Not used 24 Vdc Current Out Voltage Out OPA r AlddN S YaMOd 1149 avol Logic Input Connections cont d Input 2 functions as a send data command closing the input causes the weight data to be sent to the RS 232 serial port Logic Output Connections Use terminal 1 for Output 1 and terminal 2 for Output 2 Terminal 3 is the common for both outputs The outputs utilize solid state relays with a maximum load rating of 24 Vdc 100mA Analog Output Connections Use terminal 10 for the 4 20mA output 300 Ohm load max or terminal 11 for a 0 to 5 Vdc or 0 to 10 Vdc output 10K Ohm load max Terminal 12 is used as the common for either output Serial Output Connections The transmitters serial port supports RS 232 RS 422 or RS 485 communications Serial parameter selec
13. pressed PRG PRG PRG PRG Place the unit in Basic Configuration mode by pressing and holding the PRG key until the display shows CAPAC Use either the UP or DOWN keys to scroll through the eight basic configuration menus shown above To set one of the following parameters CAPAC SENSIT NET DEAD L DSPDIV or ANALOG press the PRG key to view the default or previously selected value for that parameter To change the value press the O key to select a digit PRG PRG V _ transducer s PRG Enter total scale capacity PRG Enter PRG sensitivity Enter LIVE weight value PRG Enter Dead Load weight value PRG Select display divisions 0 001 50 PRG View input signal value o lt mV V See calib procedure on next page Enter FS value for analog out then use the UP or DOWN keys to increment or decrement the value of the selected digit Press the PRG key to enter the new value then press either the UP or DOWN keys to move to the next parameter To exit the setup procedure press the O key when any one of the sub menu parameters are displayed The display will indicate STORE press the PRG key to save the changes and return to the operating mode Basic Configuration Menu
14. the O key to select each digit then use the UP or DOWN keys to increment or decrement the value of the selected digit 5 Press the PRG key to enter the setting CAL will be blinking on the display 6 Press the PRG key the display indicates CALIBR press either the UP or DOWN keys to move to the next parameter 7 If no additional parameter changes are required press the O key the display indicates STORE 7 press the PRG key to save the changes and return to the operating mode Should it be necessary to erase either of the previous calibration entries proceed as follows When the message CAL is blinking on the display to erase the zero calibration press and hold the FUN key and then press the O key Release both keys the previous zero calibration entry has been erased To erase the span calibration press and hold the FUN key and then press the SET key Release both keys the previous span calibration entry has been erased End the procedure as described above points 6 and 7 Complete Configuration via the Front Panel Model 400 In order to perform a complete configuration the unit must be placed in setup mode To enter the setup mode press and hold the PRG and SET keys on the front of the unit The SET key must be pressed after the PRG key Release both keys when the word CONFIG is shown on the display The C
15. the parameter selections for the serial output The sixth folder contains the parameter selections for the analog output The seventh folder provides a means for testing the outputs and analog output The Main Setup Screen and file folders 1 through 6 all have SEND buttons on them for downloading the various parameter changes When configuration and calibration has been completed the data can be saved on a PC or floppy disk or downloaded sent to the transmitter This method of configuring and calibrating is very beneficial when several transmitters with similar configurations are being set up or when a transmitter has to be replaced To exit INOVATION click on the Exit Setup icon Now click on Option in the upper left corner of the screen from the drop down menu select EXIT a Save Changes window will appear click on OK This will return you to the Configuration Utility Screen click on QUIT Figure 2 shows an example of one of the INOVATION configuration screens Figure 2 INOVATION MAIN SETUP SCREEN E Option Edit Gross Weight Pes Device address 1 GAGs Setpoint 1 value 1500 j d 1 0 0 0 Grose Weight Setpoint 2 value 3500 P Geshe _ Input 1 status lo Status Instrument Input 2 status lo g 3 x Instrument Instrumeni Output Output2 Net Stable Software Ver 20 Parameters 1 Calibration T Filters z track Output config Y Serial Ana output Ti Test
16. Dr ecl 2 eTM DAT 400 Series Digital Analog Transmitters Installation amp Operating Manual version 0 5 Precise Tustrament Corp 76 Winn Street Woburn MA 01801 Tel 781 937 3115 Fax 781 937 3116 Technical Specifications Power Requirements Input Voltage 24 Vdc 15 Power Consumption 7 5 Watts Isolation Class II Category Category II Environmental Operating Temperature 14 to 122 F 10 to 50 C Storage Temperature 4 to 158 F 20 to 70 C Relative Humidity 85 non condensing Display Type 6 digit red LED 7 segment 0 55 high Status LED s 4 Red LED s Keyboard 4 Keys tactile feedback Performance Excitation Voltage 5 volts fixed short circuit proof Load Current 85 mA six 350 load cells Conversion Rate 50 updates second no filtering Resolution 60 000 counts Sensitivity 0 02 uV count Linearity lt 0 01 of full scale Temperature Creep lt 0 001 of FS C A D Converter 24 bits Signal Input Range 0 5 mV V to 3 5 mV V 3 9 mV V to 3 9 mV V optional Filter 0 1 Hz to 25 Hz selectable Increment Size x1 x2 x5 x10 x20 x50 Decimal Point 0 0 0 00 0 000 Calibration Methods Computer interface or via front panel Analog Output Isolated Type 16 bit D A conversion Voltage 0 10 Vdc 10K min load Current 4 20 mA 300 max load Linearity lt 0 012 of full scale Temperature Creep lt 0 001 of FS C Inputs amp Outputs 2 Logic Inpu
17. METERS SELECTIONS DESCRIPTION BAUD R 2400 9600 19200 COM1 Baud rate selection 38400 115200 Standard baud rate 9600 NONE CONTIN ascii DEMAND ascii AUTOM ascil SLAVE asclil MODBUS BCD PROFIB DEVNET NONE COM1 Serial port transmission mode selection Standard transmission mode Continuous The possible Data Format selection for this protocol are N82 E81 081 Parity Data bits Stop bits COM2 Serial port transmission mode selection ADDRES 01 to 32 COM1 Identification address selectable from 1 to 32 PR ADD DN ADD 001 to 126 Profibus DP or DeviceNet node address DELAY 0 00 to 1 00 REM CO REMOTE DATA F Delay in responding to a data request from the host in Demand or MODBUS modes COM Time unit 1 100 second maximum 1 second Enables communication with INOVATION without re positioning jumper J1 as described on page 9 Data Format selection for the ASCII protocols Parity Data bits Stop bits See PROT 1 26 Sub menu parameter selections cont d Continuous transmission The transmission speed depends on the digital filter setting and the baud rate value selected See Table 4 below for additional information Table 4 BAUD RATE Driver for the optional BCD Board The transmission speed depends on the digital filter setting and the baud rate value selected See Table 5 below for additional information Table 5 BAUD RATE 27 Sub menu
18. ONFIG menu is the first of six main menus used to completely configure the instrument Use either the UP or DOWN keys to navigate through the six main menus shown below Display Main Menu Functions CONFIG Parameters for total scale capacity transducer sensitivity net and dead load weight values display divisions CALIBR Zero and full scale calibration PARAM Parameters for digital filtering motion auto zero and zero tracking IN OUT Operating mode selection for outputs and input and output test SERIAL Serial output configuration ANALOG Analog output configuration and cali bration Press the PRG key to move down to the sub menu or parameter desired Press the PRG key to view the default or previously selected value for that parameter To change a parameter press either the UP or DOWN keys to view the choices for that parameter When the desired selection appears on the display press the PRG key to enter the selection and move to the next parameter To edit numerical values use the O key to select the digit then use either the UP or DOWN keys to increment or decrement the value of the selected digit Once the value has been entered press the PRG key to store the value and move to the next parameters Press the 0 key until the display indicates STORE press the PRG key to save the changes and return to th
19. T When the PROT 2 menu is set as PROFIB or DEVNET the ANALOG menu will be automatically disabled Therefore the access to the ANALOG menu is possible only when the PROT 2 has been set as NONE OPERATING MODE Complete Configuration Menu cont d PRG ere L PRG PRG PRG PRG Enter weight ES PRG 4 value PRG PRG PRG iii E gt 04 E i j PRG PRG Adjust value DOWN keys x 1 With the unit in Complete Configuration 5 To edit numerical values ma ns and Key 1o mode press either the UP or DOWN select the digit then use either the UP or keys until ANALOG is shown on the display DOWN keys to increment or decrement the value of the selected digit 2 Press the PRG key to enter the sub menu I I then use either the UP or DOWN keys to 6 Press the PRG key to enter the new value select one of the sub menu parameters then press either the UP or DOWN keys to move to the next sub menu parameter or 3 Press the PRG key to view the default or press the O key to return to the main menu previously selected value for that parameter f The ANZERO parameter is a negative weight 4 To change a parameter press either the UP value to which the zero offset of the analog out or DOWN keys to view the choices for that put
20. c Tx Slave 01 Tx Slave 01 15 mSec 31 5 LIST OF TRANSMISSION STRINGS Symbols used in the strings A 1 byte for slave address Example Slave N 17 A 0 x 11 5 1 FUNCTION 1 READ COIL STATUS QUERY Address Function 1st Output address Number of outputs 2 byte Total byte A 0x01 0 x 0000 0 x 0008 CRC 8 RESPONSE Address Function Number of bytes Status of outputs 2 byte Total byte A 0x01 0x01 0x 00 CRC 6 Status of outputs In this byte each output is identified by 1 bit The address of the 1st output is the least significant bit LSB in this byte 1 On 0 Off 5 2 FUNCTION 2 READ INPUT STATUS NOT USED 5 3 FUNCTION 3 READ HOLDING REGISTERS QUERY Address Function ist Register address Number of register 2 byte Total byte A 0 x 03 0 x 0000 0 x 0002 CRC 8 RESPONSE Address Function Number of bytes 1st Register 2nd Register 2 byte Total byte A 0x 03 0 x 04 0 x 0064 0 x 00C8 CRC 3 2 x N of registers 2 5 4 FUNCTION 4 READ INPUT REGISTERS read only QUERY Address Function 1st Register address Number of register 2 byte Total byte A 0x04 0 x 0000 0 x 0001 CRC 8 RESPONSE Address Function Number of bytes 1st register 2 byte Total byte A 0x04 O x 02 0 x 0064 CRC 3 2 x N of registers 2 32
21. calibration entries proceed as follows To erase the zero calibration press and hold the FUN key and then press the O key Release both keys the previous zero calibration entry has been erased To erase the span calibration press and hold the FUN key and then press the SET key Release both keys the previous span calibration entry has been erased 13 Complete Configuration Menu cont d The Model 400 features a 10 point linearization option available only with the front panel keys Any number of points up to 10 may be used however the last point must always be the full scale value of the weighing system Example A one point linearization correction would require a total of two points one point within the range and one point for full scale Prior to performing the linearization correction at least the zero of the unit must have already been calibrated while the full scale value is not mandatory The unit must be in CALIBR mode and you should have known weights available equal to the points being set Multi point Calibration via Front Panel Keys 1 With the unit in either Basic or Complete Configuration mode press the PRG key CAL will be blinking on the display 2 Press and hold the SET key until Lin P1 is blinking on the display 3 Apply a known weight for the first linearization point and press the PRG key 4 Enter the actual w
22. can be referred parameter When the desired selection appears on the display press the PRG key to enter the selection and move to the next parameter Example If the selected range is 4 20 mA and the ANZERO value is 10 the analog output value will be 4 mA when the weight will be 10 19 Serial Communication Baud Rates 2400 9600 19200 38400 and 115200 Data Formats All serial characters are in ASCII format and consist of the following 1 Start Bit 7 or 8 Data Bits 1 or 2 Stop Bit Parity No Even or Odd The above data depend on the selection made in the SERIAL menu see Table 3 on page 26 Transmission of the serial data can be initiated in several ways as described below Automatic mode The Automatic mode is used to interface with printers or other data acquisition devices The serial data is transmitted automatically upon stabilization whenever the weight value has increased or decreased more than 20 divisions This function is not performable when the MOTION parameter is set to 0 weight stability check disabled Continuous mode The Continuous mode is used to interface with computers remote displays or other types of devices that require constant data updating Demand mode The Demand mode is used to interface with printers and requires a manual print command from the front panel keys Model 400 or a remote contact closure to initiate the output I
23. e operating mode Configuration using INOVATION To configure the Precise 400 Series Digital Analog Transmitters with the INOVATION program proceed as follows Install INOVATION on an IBM compatible computer running Windows 95 98 Me or XP 2 Minimum system requirements are 8MB of extended memory and at least 5MB of available hard drive space 3 Remove power from both units and connect the PC s serial port to the RS 232 terminals on the transmitter Refer to page 25 for wiring 4 Apply power to the PC and the transmitter then start the INOVATION program 5 Switch the transmitter into remote mode by removing the upper left cover and moving jumper J1 to the remote control position as shown below The Model 400 can also be switched into remote mode by going into complete configuration and then selecting Remote from the serial menu See page 18 Pins 1 2 Remote Control Pins 2 3 Default Setting 1 9 OOOOOOOOO When viewing either model from a computer the current weight value will be displayed under the icon representing the unit being configured If ERROR appears under the transmitters icon re check all of the wiring connections verify that the unit is in remote mode and make sure the icon being displayed matches the address of the transmitter to be configured Double clicking on the transmitters icon will bring you to the INOVATION Main Setup Screen Conf
24. e the changes and return to the operating mode 14 Complete Configuration Menu cont d Aly PRG PRG 1 With the unit in Complete Configuration mode press either the UP or DOWN keys until PARAM is shown on the display 2 Press the PRC key to enter the sub menu then use either the UP or DOWN keys to select one of the sub menu parameters 3 Press the PRG key to view the default or previously selected value for that parameter 4 To change the value press the O key to select a digit then use the UP or DOWN keys to increment or decrement the value of the selected digit PRG PRG PRG Enter value 0to9 PRG Default 5 Enter value 0to4 PRG Default 2 Enter value 0 0 to 10 0 i PRG 0 Disabled Enter value 0 to 4 PRG Default 2 Enter value 0 to 200 Default 100 e l s L PRG 5 Press the PRG key to enter the new value then press either the UP or DOWN keys to move to the next sub menu parameter or press the O key to return to the main menu 6 To exit the configuration procedure return to the main menu and press the O key the display indicates STORE 7 press the PRG key to save the changes and return to the operating mode See Table 2 on page 26 for a detailed explanation of t
25. eight value using the O key to select each digit then use the UP and DOWN keys to increment or decrement the value of the selected digit Apply a known weight on the scale es z Display and edit test weight value gt o NOTE Input signal from the transducer s must be stable when entering the linearization j g correction point values Sets tare value Point 0 w SET Keep pressed t PRG 5 Press the PRG key The unit will increment to the next linearization point Lin P2 6 Repeat steps 3 through 5 for additional points 7 If all 10 points will be linearized follow the 1st procedure For linearization correction using less than 10 points follow the 2nd procedure 1st Procedure 10 point linearization 7a Enter the weight value for linearization point Lin P9 and press the PRG key CAL will be blinking on the display Press the PRG key again the display indicates CALIBR 7b Press the O key the display will indicate STORE press the PRG to save the changes and return to the operating mode 2nd Procedure less than 10 point linearization 7a The last linearization point must be the full scale value Press the O key CAL will be blinking on the display 7b Press the PRG key the display will show CALIBR Press the O key the display will indicate STORE 7c Press the PRG key to sav
26. f the set point is 789 8 3949 x 0 2 789 8 Even the other weight values are given as number of divisions except for the Net weight and Gross weight Net weight and Gross weight Modbus addresses 40006 and 40007 are given as absolute values Note The numeric values on the following pages for addresses codes and data are represented as decimal values The addresses given in the following tables refer to the standards provided in the Modicon Modbus Protocol Reference Guide PI MBUS 300 Rev J 2 DATA FORMAT Start Bit 1 Data Bits 8 the Least Significant Bit LSB is sent first Parity No Even Odd Stop Bits 1 2 Possible Data Format Selection N 8 2 E 8 1 O 8 1 3 LIST OF FUNCTIONS SUPPORTED Function Description 01 01 READ COIL STATUS 03 03 READ HOLDING REGISTERS 04 04 READ INPUT REGISTERS 05 05 FORCE SINGLE COIL 06 06 PRESET SINGLE REGISTER 15 OF FORCE MULTIPLE COILS 16 10 PRESET MULTIPLE REGISTERS Hexadecimal values between brackets 29 Each single function is explained in detail on pages 32 33 and 34 of the operator s manual Each function is composed by a Query request master instrument and a Response answer instrument master Queries and responses are composed by a sequence of data that are briefly explained here below please note that the code Ox before any value indicates that
27. ffset OFFSET 4 40405 An Zero negative weight value for zero ANZERO YES analog output 1 The combined theoretical net and tare weight values must not exceed the total capacity value 2 Refer to the 15 values from 0 001 to 50 3 For the list of values please refer to the user manual 4 They are stored in the E2prom if writing the function 0000 in the status register 5 When setting these values the decimal point has not to be included Serial parameter specifications e Once the serial address and response delay have been modified they take effect immediately e The serial port mode can t be modified via Modbus e When setting a new baud rate value the power to the instrument must be removed and re applied in order for the changes to take effect TABLE A IDENTIFICATION CODES Code Display divisions 0 00 0 001 1 01 0 002 2 02 0 005 3 03 0 01 4 04 0 02 5 05 0 05 6 06 0 1 7 07 0 2 8 08 0 5 9 09 1 10 0A 2 11 0B 5 12 0C 10 13 0D 20 14 0E 50 Hexadecimal values between brackets 37 Table of the Input Status bytes Description Bit s meaning The Modbus address 40008 is composed by 2 bytes The conversion of these 2 bytes from hex 0 1 into binary gives the meaning of each single b
28. gizes stopping the flow feed etc The product is drawn from the vessel as required when the weight in the vessel reaches 10 Ibs setpoint 1 s relay re energizes and automatically refills the vessel to 5 000 Ibs 28 MODBUS RTU PROTOCOL SPECIFICATIONS 1 PRECAUTIONS The Modbus protocol writes directly into the memory of the instrument Use caution when sending data to the instrument The data being sent must be within the specified ranges given in the tables on the following pages Some of the data is written into the E2prom s memory refer to the column in the tables Stored in E2prom for additional information This memory can only be written to 100 000 times therefore you should avoid writing continuously into this memory To confirm the storage of a new value in the E2prom perform the MAKE BACKUP function If this function is not performed all of the newly stored data will be lost when power is removed from the instrument The Set point setting does not require the MAKE BACKUP function to be performed The set point values are expressed as number of divisions This means that any set point value temporary or permanent has to be multiplied by the Display division data in order to obtain the actual value of the set point E G Assuming that the display division value is 0 2 if the PLC asks for a set point value and get the data 3949 from the instrument this means that the actual value o
29. gured thus giving it a set of operating parameters The unit can be calibrated using the 2 point method or the optional multi point linearity compensation method See page 14 fora detailed description of the multi point calibration procedure 2 Point calibration via the front panel keys To calibrate the transmitter using the front panel keys proceed as follows 1 With the unit in Complete Configuration mode press either the UP or DOWN keys until CALIBR is shown on the display 2 Press the PRG key CAL will be blinking on the display 3 With the system unloaded press the O key 4 Apply a known weight not less than 10 of the net weight value and press the UP key NOTE Input signal from the transducer s must be stable when entering the zero and span values 5 Enter the actual weight value using the O key to select each digit then use the UP or DOWN keys to increment or decrement the value of the digit Press the PRG key to enter the setting CAL will be blinking on the display 6 Press the PRG key the display indicates CALIBR press either the UP or DOWN keys to move to the next parameter 7 If no additional parameter changes are required press the O key the display indicates STORE press the PRG key to save the changes and return to the operating mode Should it be necessary to erase either of the previous
30. he PARAM parameter selections 15 Complete Configuration Menu cont d PRG See notes PRG on page 28 PRG Default 2 Enter value PRG 0 00 100 0 PRG Default 0 Enter value PRG 0 00 100 0 PRG Default 0 Refer to PRG procedure for MODE 1 See notes PRG on page 28 PRG Default 2 Enter value PRG 0 00 100 0 PRG Default 0 Enter value PRG 0 00 100 0 PRG Default 0 Continued on the following page 16 Complete Configuration Menu cont d Cont d from the previous page Closing Input 1 10 Closing Input 2 02 See Table 1 Table 1 Display OUTPUT 1 OUTPUT 2 status status See Table 6 on page 28 for a detailed explanation of the IN OUT parameter selections 17 PRG PRG Enter value PRG 01 32 PRG Max 32 J i N ey Enter value PRG oo1 126 PRG w cc l Z Enter value PRG 0 00 1 00 PRG Max 1 sec J See Tables 3 through 5 for a detailed explanation of the SERIAL parameter selections 18 Use the PROT 2 ONLY when the instrument is equipped with the Profibus DP or DeviceNet option cards Otherwise do not enter into this menu BAUD1R BAUD2R and DN ADD come up on the display only if the PROT 2 menu has been set as DEVNE
31. ht of the weighing system H NET 0 to full scale 1 YES 40104 Net weight of the weighing system L 40105 Dead load of the weighing system H DEAD L 0 to full scale 1 YES 40106 Dead load of the weighing system L 40110 Operating mode OPMODE 0 2 3 YES 40150 Display divisions DSPDIV 0 14 2 YES See Table A Weighing Parameters 40180 Digital filter value FILTER 0 9 3 YES 40181 Motion band value MOTION 0 4 3 YES 40182 Auto zero value AUTO 0 0 1 10 00 3 5 YES 40183 Zero tracking value 0 TRAC 0 4 3 YES Set Points Configuration 40200 Operating mode Set point 1 MODE 1 YES 40201 Hysteresis Set point 1 HYST 1 0 to full scale YES 40202 Timer Set point 1 TIMER1 0 1 100 0 5 YES 40203 Delay Set point 1 DELAY1 0 1 100 0 5 YES 40204 Operating mode Set point 2 MODE 2 YES 40205 Hysteresis Set point 2 HYST 2 0 to full scale YES 40206 Timer Set point 2 TIMER2 0 1 100 0 5 YES 40207 Delay Set point 2 DELAY2 0 1 100 0 5 YES Holding Register Table continued on the following page 36 List of the Holding Registers 4x cont d Serial Configuration Relevant menu 40300 Baud rate BAUD R 0 4 3 YES 40301 Serial address ADDRES 1 32 YES 40302 Response delay DELAY 0 100 YES Analog Output 40400 Analog output full scale F SCAL 0 to full scale YES 40401 Analog output operating mode MODE 0 3 3 YES 40402 Analog output range RANGE 0 3 3 YES 40403 Zero offset OFFSET 4 40404 Full scale o
32. iguration using INOVATION cont d On this screen you can switch the display among net gross and peak reading set the se rial address enter values for the two setpoints check the two logic inputs status and the software release of the instrument Click on the SETUP button seven file folders will appear on the lower half of the screen The first file folder labeled Parameters will be open The top section in this folder is for entering the total scale capacity sensitivity net weight and dead load weight values required parameters for performing a data sheet calibration The data sheet calibration procedure allows the transmitter to be calibrated without a transducer simulator or test weights This procedure is based on the capacity and certified full scale mV V output sensitivity of the transducer s To perform a data sheet calibration enter the above values then click on the SEND button for that group of parameters The next section in this file folder is used to select the display resolution It consists of a drop down menu and a SEND button The Precise units allow to count by 1 s up to 60 000 counts Yet for values greater than 10 000 the units automatically select a lower resolution to ensure greater stability After se lecting the desired resolution press the SEND button for this parameter Do not press any of the other SEND buttons in this folder or the unit will revert back to a default setti
33. ing primary and switched power should be routed away from load cell and other signal cables to avoid electrical interference Relays motor starters and other inductive devices connected to the equipment must have reliable and effective arc suppression Always connect the shield lead where indicated on the drawing and on one end only High voltage devices such as megohmmeters etc should never be used to check the wiring connections Plastic insulating tape should not be used on load cell connections Environmental Considerations Heavy electrical equipment should not be installed close to the weighing equipment Excessive vibration will affect the accuracy of the weigh system and depending on the severity can cause damage to electrical and electronic components The atmosphere should be dust free and not contain any corrosive gasses or materials which could adversely affect the equipment Hazardous areas If the weighing system will be installed in a hazardous area please refer to the drawing shown on page 40 NOTES WELDING on or in the vicinity of the equipment is strictly prohibited STATIC loads caused by thunderstorms must be prevented from developing by using reliable lightning conductors ENSURE that the cooling of the equipment is not obstructed Introduction This manual provides general information on the installation configuration calibration and operation of the Precise 400 Series Digita
34. it i i described in this table Net weight polarity 1 Gross weight polarit E g gt polartty 0 if the bytes in the address 40008 are 24 85 the Stable weight no yes 1 conversion into binary gives the sequence of bits x I 100100 10000101 Millivolt polarity 0 The digit at the right hand side matches with the Underload condition n yes 0 1st bit Net weight polarity therefore the values given in the above mentioned example are equi Overload condition no yes 0 valent to Off range condition no yes 0 Net weight polarity 1 negative Gross weight polarity 0 positive Preset tare condition no yes 1 Weight stability 1 yes Input 1 status De activated Activated 0 Millivolt polarity 0 positive Underload condition 0 no Input 2 status De activated Activated 0 Overload condition 0 no F Off range condition 0 no Relay output 1 status De activated Activated 1 Preset tare condition 1 yes Relay output 2 status De activated Activated 0 Input 1 status 0 de activated Input 2 status 0 de activated Scale unloaded no yes 0 Relay output 1 status 1 activated Keyboard status Unlocked Locked 1 Relay output 2 status z 0 3 de activated Scale unloaded 0 no Keyboard status 1 locked The scale is considered unloaded empty when the weight value is within the 0 Band range see Table 2 page 26 List of the Input Registers 3x Modbus Description Address 30003 A D converter internal counts H 30004 A D c
35. l Analog Transmitters There are two models within this series the Model 400 which features a four button keyboard 6 digit Red LED display and four status LED s The Model 450 is a blind unit which can only be configured and calibrated remotely via the serial port Both models are packaged in ABS Plastic DIN Rail mounted enclosures All units include the following features Drives up to six 350 ohm load cells Supports 4 and 6 wire connections RS 232 RS 422 or RS 485 outputs 2 Logic inputs 2 Logic outputs setpoints Isolated analog output 4 20mA 0 5 Vdc or 0 10Vdc output utilizing a 16 bit DAC The Precise 400 Series Transmitters have three different modes of operation Operating mode In this mode the unit displays gross weight net weight or peak force readings as required Setup mode This mode is used for configuration and calibration of the unit Test mode The test mode enables you to test the inputs outputs and analog output Front panel key functions Operating Mode Model 400 The SET key enables you to enter values for Setpoints 1 and 2 Press the SET key Set 1 appears on the display Press the PRG key to view the current value To change the current value press the O key to select a digit then use the UP or DOWN keys to increment or decrement the value Repeat this procedure for the remaining digits then press the PRG key to enter the new
36. meter 12 sensitivity Enter weight value mV V Enter total scale PRG i PRG capacity Enter transducer s PRG LIVE PRG ers PRG Enter Dead Load weight value Select display divisions 0 001 50 View input signal value gt o View the Raw gt o A D counts Operating mode power up PRG To change the value press the O key to select a digit then use the UP or DOWN keys to increment or decrement the value of the selected digit Press the PRG key to enter the new value then press either the UP or DOWN keys to move to the next sub menu parameter or press the O key to return to the main menu To exit the configuration procedure return to the main menu and press the O key the display will indicate STORE press the PRG key to save the changes and return to the operating mode Complete Configuration Menu cont d NOTE In order to ensure greater stability during the calibration procedure the digital filter increases to the maximum value automatically value 9 therefore the weight indication updates very slowly at this stage Once the calibration procedure has been completed the digital filter will return to the pre vious value automatically Enter the actual weight value SPAN ere eat NOTE Prior to calibration the transmitter must be confi
37. mple address 1 would be 1 80h 81h ETX end of text 03h EOT end of transmission 04h Character strings lt status gt 1 ASCII character consisting of the following S Stable M Motion QO Overload E Error lt net weight gt 6 ASCII characters lt gross weight gt 6 ASCII characters lt peak value gt 6 ASCII characters lt checksum gt 2 ASCII characters lt Addr gt amp ETX are not included in the checksum NOTE The brackets lt gt are not sent they are only shown for clarification The checksum control value is obtained by performing the XOR operation It is expressed with 2 Hexadecimal digits Example 25 1D The result of the above calculation equals 1 character which can be a numerical value of 0 to 9 or A to F Hexadecimal Programming the set points Command from the host saam s lt s gt lt Jer ensus Eor lt s1 gt 6 ASCII characters for set point 1 lt s2 gt 6 ASCII characters for set point 2 The transmitter responds with the following data string In case of an error the transmitter will respond with the following data string The programmed values are stored in RAM however they are not retained if the power is removed There is no limit on the number of times that these commands can be performed 21 Store set point values in Eeprom Command from the host lt addr gt m EOT The transmitter responds with the f
38. n the above modes the transmitter sends serial data using the format shown below lt net weight lt gross weight gt STX start of text 02h ETX end of text 03h EOT end of transmission 04h lt status gt 1 ASCII character consisting of the following S Stable M Motion O Overload E Error lt net weight gt 6 ASCII characters lt gross weight gt 6 ASCII characters lt peak value gt 6 ASCII characters lt checksum gt 2 ASCII characters STX amp ETX are not included in the checksum NOTE The brackets lt gt are not sent they are only shown for clarification The checksum control value is obtained by performing the XOR operation It is expressed with 2 Hexadecimal digits Example 25 1D The result of the above calculation equals 1 character which can be a numerical value of 0 to 9 or A to F Hexadecimal 20 Serial Communication cont d Slave mode The slave mode is used for interfacing with distributed control systems DCS or programmable logic controllers PLC This mode requires a data request from the master to initiate the output In this mode the host sends serial data to the transmitter using the formats shown below aaar en EO After receiving the request the transmitter responds with the following data string In case of an error the transmitter will respond with the following data string lt addr gt serial address 80h Exa
39. ng of x2 x5 etc Changes to the display resolution should only be done after the unit has already been calibrated using the data sheet or dead load procedure The bottom parameter selection in this file folder is labeled Operating Mode It enables the unit to retain the mode of operation in the event of a power loss When the power is re applied the transmitter automatically returns to the mode that it was operating in prior to the power loss Changes to the Operating Mode cause an automatic power off power on sequence of the instrument when the configuration will be saved This allows the new Operating Mode to take effect The second file folder enables you to calibrate the unit with a transducer simulator or actual weight recommended method of calibration Inside this 2nd file folder once the zero calibration has been performed the program asks the operator if the new zero has to modify the Data sheet calibration If the operator answers Yes the Dead load value inside the first file folder will change automatically according to the new zero If the operator answers No the Dead load value inside the first file folder will remain set to the previous value The third file folder contains the parameter selections for digital filtering zero tracking etc The fourth file folder contains the parameter selections for configuring the inputs and outputs The fifth file folder contains
40. ollowing data string lt addr gt M EOT In case of an error the transmitter will respond with the following data string lt addr gt EOT This command is used to store the programmed set point values in Eeprom This command can be performed up to 100 000 times Request set point values Command from the host lt addr gt R EOT The transmitter responds with the following data string lt adar gt lt s1 gt lt s2 gt ETX lt chksum gt EOT In case of an error the transmitter will respond with the following data string lt addr gt EOT Net mode Gross mode switch command This command performs the same function of the FUN key Switch to Gross weight mode Command from the host lt addr gt The transmitter responds with the following data string lt addr gt In case of an error the transmitter will respond with the following data string lt addr gt 22 Switch to Net weight mode Command from the host aaar c ow eo The transmitter responds with the following data string aaar co n ack Eor In case of an error the transmitter will respond with the following data string Zero Tare Peak reset command This command performs the same function of the O key and or logic input 1 It s used to zero the unit when in Gross mode tare the unit when in Net mode and reset the value to zero when operating in Peak Hold mode
41. onverter internal counts L 30005 Millivolt value 30006 Instrument software release 30007 Instrument On line Modbus address 30007 00 01 the weight value is shown on the display The instrument is On line Modbus address 30007 00 00 one of the error conditions underload overload offrange occurs or any programming procedure is underway The instrument is Off line List of the coils 0x Bit s meaning Modbus Description Range value Stored in Address E2prom 0 1 00001 Logic output 1 De activated Activated 1 bit NO 00002 Logic output 2 De activated Activated 1 bit NO 38 List of the functions Command register Function Codes Description Function Command Stored in Data Register E2prom 0001 01 Hex Semi automatic zero NO 0002 02 Hex Auto tare NO 0003 03 Hex Peak reset NO 0004 04 Hex Force net weight visualization NO 0005 05 Hex Force gross weight visualization NO 0016 10 Hex Zero calibration YES 0017 11 Hex Full scale calibration Sample weight YES 0018 12 Hex Reset zero calibration YES 0019 13 Hex Reset full scale calibration YES 0032 20 Hex Back up E2prom YES List of the functions Status register Function Codes Description Function Status Stored in Data Register E2prom 0000 00 Hex None of the functions are activated NO 0003 03 Hex Analog output zero offset adjustment
42. parameter selections cont d Table 6 IN OUT MENU PARAMETERS SELECTIONS DESCRIPTION Operating mode selection for output number 1 N O Contact status below the N C setpoint value POS Comparison with positive or NEG negative weight values NORMAL _ Output enabled only after the STABLE weight reading has stabilized HYST 1 Hysteresis setting used to See notes below Default 2 eliminate chattering of the relay coincidence point TIMER 1 0 0 to 10 0 The output is disabled after 0 disabled the time period has expired 1 10 second increments DELAY 1 0 0 to 10 0 Time delay before the output 0 disabled is enabled 1 10 second increments Same parameter selections as above for output 2 TEST IN See page 17 Test procedure for inputs TEST OUT Test procedure for outputs NOTES 1 The hysteresis setting must be less than it s respective setpoint value Entering a hysteresis setting greater than the setpoint value will automatically be replaced with a default setting of 2 counts 2 Hysteresis settings of within 10 counts of their respective setpoint values are possible however much smaller values are normally sufficient 3 A large hysteresis setting 4 990 counts could be used as follows Setpoint 1 is used to fill a vessel with 5 000 Ibs of product and setpoint 2 will be used as a high weight alarm When the weight in the vessel reaches 5 000 Ibs relay 1 de ener
43. res that the product DAT 400 Complies with the essential requirements of the directives 73 23 CEE 89 336 CEE 93 68 CEE when used for its intended purpose The product is made in accordance with the following standards ELECTROMAGNETIC COMPATIBILITY EN 61000 3 2 EN 61000 3 3 EN 61000 6 2 EN 61000 6 3 EN 61326 1 ELECTRICAL SAFETY EN 61010 1 The CE mark has been applied on the product Cavenago Brianza April 15 2004 The Manager 42
44. s the number of the outputs to be read 1 t Input address is the address number where the reading of the inputs has to start Number of inputs is the number of the inputs to be read Number of bytes represents the number of bytes which compose a data 2 byte CRC Cyclical Redundancy Check It s an algorithm used as checksum Total byte Total number of bytes transmitted This data is not included in the strings 4 INSTRUMENT RESPONSE TIME The response time for most data requests is within 20 milliseconds Exceptions e E2prom Backup command Maximum time 350 milliseconds e Writing of the following registers Load cell s total capacity load cell s sensitivity Net weight Tare weight and Filter Maximum time 550 milliseconds 4 1 RESPONSE TIME WHEN CONNECTING SEVERAL SLAVES Single twisted pair Query Master to slave 01 Response time slave 01 Response slave 01 20 mSec delay Query Master to slave 02 Double twisted pair Query Master to slave 01 Response time slave 01 Response slave 01 delay Query Master to slave 02 oe With a baud rate of 19200 Time 15 to 20 milliseconds 30 Scheme of the communication time in a Master Slave RS 485 system using a double twisted pair RTU Baud 9600 8 mSec 1 mSec 8 mSec Tx Slave 01 Tx Slave 01 RTU Baud 19200 4 mSec 1 mSec 4 mSe
45. so used to enter the sub menus and store parameter changes Status LED s Model 400 only There are four status LED s on the front of the unit one for Motion one for Net mode and one for each of the outputs Enabling Disabling front panel keys In order to prevent any access to the instrument by non authorized personnel a procedure to lock the keyboard is also available How to LOCK the front panel keys Press and hold the PRG and O keys The O key must be pressed after the PRG key Release both keys when the message LOCK appears on the display Press the PRG key to confirm Now the keys are disabled How to UNLOCK the front panel keys Press and hold the PRG and O keys The O key must be pressed after the PRG key Release both keys when the message UNLOCK appears on the display Press the PRG key to confirm Now the keys are enabled Note When the keyboard is locked the message LOCK appears for a while during the power on sequence OPA pz s ndu 91607 104 A ddns samod xg Main Power Connections Use terminal 8 for the input and terminal 9 for the input The supply voltage must be 24 Vdc 15 The external power supply must have a minimum rating of 5 watts Transducer s Connections Attach cable from transducer s to transmitter terminals 13 through 18 If using a 4 conductor cable no remote sensing jumpers must be
46. splay press the PRG key to store the new value Press either the UP or DOWN keys to move to the next parameter The SIGNAL parameter enables you to view the actual input signal from the transducer s Press the O key to move to the next parameter The CALIBR parameter is used to calibrate the transmitter The unit can be calibrated using either the data sheet or dead load procedure The data sheet calibration procedure allows the transmitter to be calibrated without a transducer simulator or test weights This procedure is based on the capacity and certified full scale mV V output sensitivity of the transducer s To perform a data sheet calibration enter the total scale capacity sensitivity net weight dead load weight and display resolution then press the O key The display will indicate STORE press the PRG key to save the changes and return to the operating mode See page 8 for a detailed explanation of the calibration procedure using test weights The ANALOG parameter is used to enter the full scale weight value that you want the analog output to represent The default is net weight value To exit from the setup procedure press the O key when any one of the following parameters are displayed CAPAC SENSIT ANALOG The display will indicate STORE press the PRG key to save the changes and return to the operating mode Basic Configuration Menu PRG keep
47. te Status of outputs 1 output each bit 1 On 0 Off the 1st Output coincides with the least significant bit LSB of the 1st Byte Non significant bits are set to zero The response includes the identification of the modified outputs 33 5 16 FUNCTION 16 PRESET MULTIPLE REGISTERS QUERY Address Function ist Number of Number of 1st 2nd 2 byte Total byte Register output register bytes Register Register value value A 0x10 0 x 0000 0 x 0002 0 x 04 0 x 0000 0 x 0000 CRC 7 2 x N of registers 2 RESPONSE Address Function 1st Register address N of registers 2 byte Total byte A 0x10 0 x 0000 0 x 0002 CRC 8 Number of registers Number of the registers to be written starting from the address Number of bytes Number of bytes transmitted as registers value 2 bytes each register Registers value Content of the registers starting from the 1st The response includes the identification of the modified registers 6 BROADCAST MODE This function is not implemented in the instrument 7 1 COMMUNICATION ERRORS The communication strings are controlled by the CRC Cyclical Redundancy Check If a communication error occurs the slave unit doesn t answer The master unit controls a timeout when waiting for the response from the slave If the slave doesn t answer during this timeout it means that a communication error has occurred 7 2 ERRORS IN THE
48. th in 1 10 sec 0 disable 0 An example of a printed report is given Time delay for activating setpoint in 1 10 sec 0 disable 0 i i i Serial on the right side of this page Baud Rate defuntt 9600 Serial port mode default Continuous transmission Slave Serial address ID Code from 01 to 32 2 Response delay Demand or Modbus mode in 1 100 sec Max 1 sec 25 Data Format N 8 2 E 8 1 O 8 1 for MODBUS mode N 8 1 Com2 Protocol None for MODBUS mode None Com2 Address Profibus DeviceNet Address from 1 to 126 001 Com2 Baud Rate Only DeviceNet 250 Ana Output Full scale value default Net weight value 8000 Analog output source Net Gross Peak H Net Analog output selection 0 20mA No load zero input value 0 11 Complete Configuration Menu gt o PRG gt o PRG gt o PRG gt o PRG gt o PRG gt o PRG gt o PRG gt o PRG Place the unit in complete configuration mode by pressing and holding the PRG and SET keys on the front of the unit The SET key must be pressed after the PRG key Release both keys when CONFIG is dis played Press the PRG key to enter the sub menu then use either the UP or DOWN keys to se lect one of the sub menu parameters Press the PRG key to view the default or previously se lected value for that para
49. the value is represented as hexadecimal value Besides all the Modbus addresses the ones mentioned in the left end column on pages 36 and 37 have to be represented as hexadecimal values but only for these addresses there is an im portant rule to be taken into consideration Before converting the address into an hexadecimal value the 1 digit on the left has not to be considered and the remaining 4 digits have to be decremented by 1 1st Example To represent the address 40150 display division on page 36 as hexadecimal value exclude the digit 4 remains 0150 then decrement by 1 the number 0150 The result is 0149 now perform the conversion into hexadecimal The result is 00 95 This is the value to be used in the query 2d Example To represent the address 40102 load cells sensitivity on page 36 as hexadecimal value exclude the digit 4 remains 0102 then decrement by 1 the number 0102 The result is 0101 now per form the conversion into hexadecimal The result is QO 65 This is the value to be used in the query Address is the number of the instrument s address represented as hexadecimal value in this case do not decrement by 1 the number Function is the number of the function to be performed see the table above 1 Output address is the address number where the reading of the outputs status has to start Number of outputs i
50. tions can be found on page 18 A detailed description of the serial data formats is provided on pages 20 through 23 Wiring connections are shown on pages 24 through 25 Figure 1 N N N N a N A N N N N _ N e O O O O O O O O O xew woz xew WOOO cecSy xew yun ze S8v CCVSHY When no programming procedures are in progress the display shows the weight value In some particular conditions the following ERROR MESSAGES are displayed The weight displayed by the instrument is more than 9 divisions over the Live weight value see NET parameter page 12 The load cells input signal is lower than 0 5 3 9 mV V The load cells input signal is higher than 3 5 3 9 mV V The load cell input signal is missing The values in brackets refer to the instruments having load cells input signal range from 3 9 to 3 9 mV V optional Configuration Methods The Precise 400 Series Digital Analog Transmitters can be configured by using the front panel keys Model 400 to navigate through a series of menus or by sending configuration and calibration data to the RS 232 port with INOVATION an MS Windows based program included with the unit INOVATION simplifies the configuration and calibration procedure Configuration Procedures There are two procedures available for setup of the Precise 400 Series Transmitters Basic Configuration
51. ts Opto isolated 24 Vdc PNP requires ext power supply 2 Logic Outputs Solid state relays maximum load 24 Vdc 100 mA each Serial Output RS 232 RS 422 or RS 485 Maximum Cable Length 50 feet RS 232 3200 feet for RS 422 and RS 485 Standard Protocols ASCII Modbus RTU Baud Rate 2400 9600 19200 38400 or 115200 selectable Enclosure Overall Dimensions 4 17 x 3 54 x 2 28 L x H x D Mounting DIN Rail Enclosure ABS Plastic Protection front IP20 Weight 8 Ounces Wiring Connections Terminal blocks pitch 0 196 Specifications are subject to change without notice Installation Mounting Install the instrument in a location where it will not be subjected to excessive heat humidity or vibration For best results avoid direct sunlight on the front of the instrument The unit should be installed at eye level so as to allow viewing the display and access to the front panel keys Cable Types and sizes Use a 6 x 0 5 mm shielded cable for the load cell s connection Use a 3 x 0 34 mm shielded cable for the RS 232 connection and a 2 x 0 34 mm shielded cable for the RS 485 connection Power and Wiring Considerations The instrument is powered from an external 24 vdc source The instrument can be operated from a computer therefore a clean power source is required for reliable operation The incoming power should come from a source that is isolated from other process equipment Cables carry
52. value To change the value for Setpoint 2 press the SET key again and repeat the above procedure or press the O key to exit The FUN key is used to switch the unit from Gross mode to Net mode or Peak Hold mode To switch to Peak Hold mode press and hold the FUN key until a P appears on the display The O key is used to zero the unit in Gross mode tare the unit in Net mode and reset the value to zero in Peak Hold mode The PRG key is used to send the data to the RS 232 serial port for use with a computer Front panel key functions Setup Mode In setup mode three of the front panel keys are used as directional keys to scroll through the various menus A label on the lower half of each key identifies the direction provided by the key The SET and FUN keys are used to navigate through the main menu and sub menus They are also used to increment or decrement the numerical value of a selected digit The O key is used to move through certain sub menu parameters or to select a specific digit when numerical values are displayed It is also used to return to the main menu from any of the sub menus The PRG key switches the unit to the Basic Configuration mode It is also used to enter the sub menus and store parameter changes The PRG key when used in conjunction with the SET key switches the unit to the Complete Configuration mode It is al
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