J-3631-1 4 Channel Analog Output Module
Contents
1. ee RR o o gt Jo ls Jo o 2 Je Jr Jo 2 2 VO Module Module in a Local Rack E 1 Register Reference One statement is reguired in the configuration task for each channel that will be used The symbolic name of each register should be as meaningful as possible nnnnn IODEF SYMBOLIC SLOT s REGISTER r where nnnnn BASIC statement number This number may range from 1 32767 SYMBOLIC_NAME A symbolic name chosen by the user and ending with This indicates an integer data type SLOT Slot number that the module is plugged into This number may range from 0 15 REGISTER The register number corresponding to the analog output channel 0 3 Example Of Local VO Definition The following statement assigns the2. 2 663 0640 Asia Pacific Rockwell Automation 27 F Citicorp Centre 18 Whitfield Road Causeway Bay Hong Kong Tel 852 2887 4788 Fax 852 2508 1846 Headquarters for Dodge and Reliance Electric Products Americas Rockwell Automation 6040 Ponders Court Greenville SC 29615 4617 USA Tel 1 864 297 4800 Fax 1 864 281 2433 Europe Middle East Africa Rockwell Automation Br hlstra e 22 D 74834 Elztal Dallau Germany Tel 49 6261 9410 Fax 49 6261 17741 Asia Pacific Rockwell Automation 55 Newton Road 11 01 02 Revenue House Singapore 307987 Tel 65 6356 9077 Fax 65 6356 9011 Publication J 3631 1 June 1991 Copyright 2002 Rockwell Automation Inc All rights reserved Printed in U S A
3. Converter OUTPUT BUFFER WDOG OK gt BD RESET y INITIALIZE 4 gt ron 3 CONTROL BYTE HIEN LOGIC WRITE _ READ MEM XFER ACK ta Channel 1 gt GATE OUTPUT BUFFER Digital to DATA gt Analog Converter Z O AdEFr OO Channel 2 Digital to DATA Analog Converter OUTPUT BUFFER ZO APFO00 Isolated Digital t Analog Channel 3 Converter Power y ChannelO Q Channel 1 OUTPUT Channel 2 BUFFER Digital to DATA gt Analog Converter Channel 3 cO 3 Channel 0 ISOL Power Channel 1 ISOL Power Channel 2 ISOL Power Channel 3 ISOL Power B 1 Appendix C Field Connections Channel Function 5 volt jumper voltage output 8 volt jumper current output common 5 volt jumper voltage output 8 volt jumper current output common 5 volt jumper voltage output 8 volt jumper current output common 5 volt jumper voltage output 8 volt jumper current output common C 1 Ap
4. 1 0 e J 3635 DCS 5000 PROCESSOR MODULE INSTRUCTION MANUAL J 3649 AutoMax CONFIGURATION TASK MANUAL J 3650 AutoMax PROCESSOR MODULE INSTRUCTION MANUAL J 3675 AutoMax ENHANCED BASIC LANGUAGE INSTRUCTION MANUAL J 3676 AutoMax CONTROL BLOCK LANGUAGE INSTRUCTION MANUAL e J 3677 AutoMax LADDER LOGIC LANGUAGE INSTRUCTION MANUAL J 3684 ReSource AutoMax PROGRAMMING EXECUTIVE INSTRUCTION MANUAL VERSION 2 0 J 3750 ReSource AutoMax PROGRAMMING EXECUTIVE INSTRUCTION MANUAL VERSION 3 0 e EEE 518 GUIDE FOR THE INSTALLATION OF ELECTRICAL EQUIPMENT TO MINIMIZE ELECTRICAL NOISE INPUTS TO CONTROLLERS FROM EXTERNAL SOURCES 1 1 2 0 2 1 2 2 MECHANICAL ELECTRICAL DESCRIPTION The following is a description of the faceplate LEDs field termination connectors and electrical characteristics of the field connections Mechanical Description The output module is a printed circuit board assembly that plugs into the backplane of the DCS 5000 AutoMax rack It consists of a printed circuit board a faceplate and a protective enclosure The faceplate contains tabs at the top and bottom to simplify removing the module from the rack Module dimensions are listed in Appendix A The faceplate of the module contains a female connector socket and 4 LED indicators that show the status of the on board isolated power supplies Output signals leave the module via a multi conductor cable M N 57C374 see Appendix D One
5. desired slot in the rack Refer to figure 3 3 Use a screwdriver to secure the module into the slot 3 2 Typical 16 Slot Rack Typical 10 Slot Rack Figure 3 3 Rack Slot Numbers Step 6 Step 7 Step 8 Attach the terminal strip connector M N 57C374 to the mating half on the module Make certain that the connector is the proper one for this module Use a screwdriver to secure the connector to the module Note that both the module and the terminal strip connector have keys that should be used to prevent the wrong cable from being connected to the module Rotate the keys on the module and the connector so that they can be connected together securely It is recommended that for modules so equipped the keys on each successive module in the rack be rotated one position to the right ofthe keys on the preceeding module Since the keys on the connectors must match their particular modules for the connector to fit this method will eliminate the possibility of the wrong connector being plugged into a module Turn on power to the system Verify that the four LEDs indicating each isolated power status are lit Verify the installation by connecting the programming terminal to the system and running the ReSource Software Stop all programs that may be running Use the I O MONITOR function If the module is in the local rack enter the module slot number and register 0 3 corresponding to the four D A converter cha
6. end of this cable attaches to the faceplate connector while the other end of the cable has stake on connectors that attach to a terminal strip for easy field wiring The faceplate connector socket and cable plug are keyed to prevent the cable from being plugged into the wrong module On the back of the module are two edge connectors that attach to the system backplane Electrical Description The output module contains 4 D A converters that provide 12 bit resolution for 5 volts 8 volts and 10 volts and 11 bit resolution for 4 20 ma current outputs Each D A converter has its own isolated common Output signals have 2500 volt isolation to logic common Refer to the block diagram in Appendix B Each output circuit consists of three operational amplifiers The first amplifier provides the voltage output Jumpers are provided on the terminal strip to select an output range of 5 8 or 10 volts Current limiting is provided to protect the device against short circuits A capacitor in the feedback path of this amplifier serves as a first order low pass output filter where the break frequency is approximately 100 hz The other two amplifiers are used to generate the 4 20 ma current output A circuit diagram is shown in figure 2 1 2 1 OUTPUT BUFFER 2 2 ra 5V Digital 10V VOLTAGE OUTPUT Analog 4mA offset J 4 zOo r oo Con verter
7. symbolic name DISPLAY to analog output channel number 2 on the output module located in slot 4 1020 IODEF POSITION SLOT 4 REGISTER 2 E 2 Remote Definition This section describes how to configure the module when it is located in a rack that is remote from the processor module referencing it Refer to the figure below y a d E Module Remote VO Slave Remote VO Master Remote l O Slave Master Rack Processor Module Remote VO Slave Module in a Remote Rack E 3 E 4 Register Reference One statement is reguired in the configuration task for each channel that will be used The symbolic name of each channel should be as meaningful as possible nnnnn RIODEF SYMBOLIC_NAME MASTER_SLOT m DROP d SLOT s REGISTER r where nnnnn BASIC statement number This number may range from 1 32767 SYMBOLIC_NAME A symbolic name chosen by the user and ending with This indicates an integer data type MASTER SLOT Slot number that the master remote I O module is plugged into This number may range from 0 15 R
8. the slave remote module and the backplane After each swap if the problem is not corrected replace the original item before swapping out the next item 5 4 Appendix A Technical Specifications Ambient Conditions e Storage temperature 40 85 C Operating temperature 0 C 60 Humidity 5 90 non condensing Maximum Module Power Dissipation 13 7 Watts Dimensions Height 11 75 inches Width 1 25 inches e Depth 7 375 inches System Power Requirements 5 volts 2750 ma 12 volts 55 ma e 12 volts 5 ma Output Circuit e Number of channels 4 e Outputranges 5 volts 10 ma max 8 volts 10 ma max 10 volts 10 ma max 4 20 ma external power supply required 12 48 volts load impedance lt 500 ohms Resolution voltage outputs 12 bits including sign 4 20 ma 11 bits sign bit always 0 e Accuracy 0 1096 of full scale voltage output 0 1596 of full scale current output Output Filter 5 Volts first order 200 Hz low pass 8 Volts first order 125 Hz low pass 10 Volts first order 100 Hz low pass 4 20ma none e Voltage outputs short circuit protected e Each channel individually isolated e 2500 volt isolation between logic common and outputs A 1 Appendix B Module Block Diagram 4 Channel Analog Output 57C410 ADDRESS Channel 0 ID BUS ADDRESS ADDRESS ID BUS DECODER Digital to Analog
9. 4 to the mating half on the module Make certain that the connector keys are oriented correctly and that the connector is the proper one for this module see step 6 in 3 2 Initial Installation Use a screwdriver to secure the connector to the module Step 8 Turn on power to the rack 3 4 4 0 4 1 register 0 register 1 register 2 register 3 4 2 PROGRAMMING This section describes how the data is organized in the module and provides examples of how the module is accessed by the application software For more detailed information refer to DCS 5000 Enhanced BASIC Language Instruction Manual J 3600 or AutoMax Enhanced Basic Language Instruction Manual J 3675 Register Organization The data in the module is organized as four 16 bit registers one for each D A converter channel The data in each register is treated as a single precision integer limited to values in the range of 4095 through 4095 Bit 15 is the sign bit and bits 1 11 are the 2 s complement data value Refer to figure 4 1 11 109 8 7 6 5 4 1 Channel 0 Data Channel 1 Data Channel 2 Data Channel 3 Data S sign bit not used Figure 4 1 Organization of Register Bits Configuration Before any application programs can be written it is necessary to configure or set the definitions of system wide variables i e those that must be globally accessible to all tasks For DCS 5000 and Aut
10. 4 Channel Analog Output Module M N 57C410 Instruction Manual J 3631 1 EL ENT ELECTRIC The information in this user s manual is subject to change without notice WARNING THIS UNIT AND ITS ASSOCIATED EGUIPMENT MUST BE INSTALLED ADJUSTED AND MAINTAINED BY QUALIFIED PERSONNEL WHO ARE FAMILIAR WITH THE CONSTRUCTION AND OPERATION OF ALL EQUIPMENT IN THE SYSTEM AND THE POTENTIAL HAZARDS INVOLVED FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN BODILY INJURY WARNING INSERTING OR REMOVING THIS MODULE OR ITS CONNECTING CABLES MAY RESULT IN UNEXPECTED MACHINE MOTION POWER TO THE MACHINE SHOULD BE TURNED OFF BEFORE INSERTING OR REMOVING THE MODULE OR ITS CONNECTING CABLES FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN BODILY INJURY CAUTION THIS MODULE CONTAINS STATIC SENSITIVE COMPONENTS CARELESS HANDLING CAN CAUSE SEVERE DAMAGE DO NOT TOUCH THE CONNECTORS ON THE BACK OF THE MODULE WHEN NOT IN USE THE MODULE SHOULD BE STORED IN AN ANTI STATIC BAG THE PLASTIC COVER SHOULD NOT BE REMOVED FAILURE TO OBSERVE THIS PRECAUTION COULD RESULT IN DAMAGE TO OR DESTRUCTION OF THE MATERIAL Reliance is a registered trademark of Reliance Electric Company or its subsidiaries 1 0 2 0 3 0 4 0 5 0 Table of Contents Introduction 0000 EDE Ee ROCA a E CR 1 1 Mechanical Electrical Description 2 1 2 1 Mechanical Description 2 1 2 2 Electr
11. 7C374 on a panel The terminal strip should be mounted to permit easy access to the screw terminals Make certain that the terminal strip is close enough to the rack so that the cable will reach between the terminal strip and the module Step 3 Fasten field wires to the terminal strip Typical field connections for voltage output and for 4 20 ma current output are shown in figures 3 1 and 3 2 respectively Refer to Appendix C for the arrangement of terminal strip connections Note that for each channel there is only one common regardless of whether voltage or current output is desired If you require either 5 volt or 8 volt outputs you must connect a jumper between the desired voltage and the voltage output on the terminal strip Make certain that all field wires are securely fastened 3 1 Optional 5V Jumper Twisted if required Voltage Output Optional 8V Jumper if required USER DEVICE On On Ou Common Figure 3 1 Typical Field Connections for Voltage Output Power Supply 12 48V Current Output 1 2 O 3 O 4 O 5 O Common Figure 3 2 Typical Field Connections for 4 20 ma Current Output Step 4 Take the module out of its shipping container Take it out of the anti static bag being careful not to touch the connectors on the back of the module Step 5 Insert the module into the
12. CURRENT gt NOUTPUT common Figure 2 1 Typical Output Circuit There are 4 LED indicators on the faceplate ofthe module The LEDs are arranged in the same order as the output terminals on the faceplate They are numbered seguentially from zero through three corresponding to the D A converter channels The LED indicators display the status of the four isolated power supplies on the module A lit LED indicates that the power supply for that channel is operational See figure 2 2 7 ANALOG OUTPUT 570410 RELIANCE ELECTRICEO M Figure 2 2 Module Faceplate 3 0 3 1 3 2 INSTALLATION This section describes how to install and remove the module and its cable assembly Wiring The installation of wiring should conform to all applicable codes To reduce the possibility of electrical noise interfering with the proper operation ofthe control system exercise care when installing the wiring from the system to the external devices For detailed recommendations refer to IEEE 518 Initial Installation Use the following procedure to install the module Step 1 Turn off power to the system All power to the rack as well as all power to the wiring leading to the module should be off Step 2 Mount the terminal strip M N 5
13. EGISTER The register number corresponding to the analog output channel 0 3 DROP Drop number of the slave remote module that is the same rack as the output module This number may range from 0 7 SLOT Slot number that the module is plugged into This number may range from 0 15 REGISTER The register number corresponding to the analog output channel 0 3 Example of Remote I O Definition The following statement assigns the symbolic name LEVEL to analog output channel number 1 on the output module located in slot 4 of remote I O drop 3 This remote drop is connected to the remote I O system whose master is located in slot 15 in the master rack 1020 RIODEF LEVEL MASTER SLOT 15 DROP 3 SLOT 4 REGISTER 1 For additional information 1 Allen Bradley Drive Mayfield Heights Ohio 44124 USA Tel 800 241 2886 or 440 646 3599 http www reliance com automax www rockwellautomation com Corporate Headquarters Rockwell Automation 777 East Wisconsin Avenue Suite 1400 Milwaukee WI 53202 5302 USA Tel 1 414 212 5200 Fax 1 414 212 5201 Headquarters for Allen Bradley Products Rockwell Software Products and Global Manufacturing Solutions Americas Rockwell Automation 1201 South Second Street Milwaukee WI 53204 2496 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Europe Middle East Africa Rockwell Automation SA NV Vorstlaan Boulevard du Souverain 36 1170 Brussels Belgium Tel 32 2 663 0600 Fax 32
14. Verify that the slot number being referenced agrees with the slot number defined in the configuration task Verify that the register number of the output module agrees with the D A channel number 0 3 For remote I O installations also verify that the master slot and remote drop number are defined correctly Verify that the module can be accessed Connect the programming terminal to the system and run the ReSource Software Stop all programs that may be running Use the I O MONITOR function to display each of the channels If the programmer is able to monitor the outputs then try to write zeros to the outputs 5 3 WARNING BE CAREFUL WHEN WRITING TO THE OUTPUTS TO INSURE THAT NO UNEXPECTED MACHINE MOTION WILL RESULT FAILURE TO OBSERVE THIS PRECAUTION COULD RESULT IN BODILY INJURY OR DAMAGE TO EQUIPMENT If the programmer is able to read and write to the output module the problem lies in the application software and You need to refer to step 1 again If the programmer cannot read and write the outputs the problem lies in the hardware proceed to step 3 Step 3 Verify that the hardware is working correctly Verify the hardware functionality by systematically swapping out the output module the processor module s and the backplane After each swap if the problem is not corrected replace the original item before swapping out the next item For remote I O installations systematically swap out the output module
15. e voltmeter should read the voltages listed in table 1 If it does the problem lies in the user application program proceed to step 7 If the values exceed the accuracy limit the offset and gain adjustment are not correct and the module is malfunctioning 5 1 WARNING BE CAREFUL WHEN WRITING TO THE OUTPUTS TO INSURE THAT NO UNEXPECTED MACHINE MOTION WILL RESULT FAILURE TO OBSERVE THIS PRECAUTION COULD RESULT IN BODILY INJURY OR DAMAGE TO EQUIPMENT Step 5 Verify that the external field device s meet module specifications To test voltage outputs remove the wires for the field devices from the terminal strip and repeat the test in step 4 If the voltmeter now reads the correct values either the module is malfunctioning or the output device impedance is too low and the current limit feature is preventing the channel from outputing the proper voltage Verify the hardware functionality by systematically swapping out modules After each swap if the problem is not corrected replace the original module before swapping out the next module To test 4 20 ma current outputs remove the connector from the face of the module Connect a voltmeter across the terminal strip connections that are wired to the load and verify that the voltage is within specifications Next connect a current meter across the terminal strip connections and verify that the current is approximately 20 ma If these tests are not successfull the problem l
16. ical Description sis ss eere EE 2 1 Installation aaa san en a nn SR C 3 1 31 WIrifig ss sek EE ER d Rr rn 3 1 3 2 Initial Installation ic mnm ae 3 1 3 3 Module 3 4 Programming nn CR CR 4 1 4 1 Register Organization 4 1 4 2 Configuration 2022400326 ore Ret DEER EDE ER 4 1 4 3 Reading And Writing Data In Application Tasks 4 2 4 3 1 BASIC Task Example 4 2 4 3 2 Control Block Task Example 4 2 4 4 le ei AAR N OR rales PROC KNIE rape N ple 4 2 4 4 1 Data Limitations 4 2 Diagnostics And Troubleshooting 5 1 Bl Incorrect Data RR Re hp EEE naar san RR 5 1 5 2 BUSEMOR siste NES EE ahaa od er v RN DE 5 3 Appendices Appendix A Technical Spechications os BEE daa A 1 Appendix B Module Block Diagram sii ic civics Re er a B 1 Appendix C Field Connections rn ie 1 Appendix D Related Components vicios cora eR ara D 1 Appendix E Defining Variables in the Configuration Task E 1 List of Figures Figure 2 1 Typical Output 2 2 Figure 2 2 Module Faceplate 2 3 Figure 3 1 Typical Field Connectio
17. ies in the field wiring or the external device Check the cable for continuity between the faceplate connector and the terminal strip Remember to replace any wires or connectors that have to be removed Step 6 Verify that the hardware is working correctly Verify the hardware functionality by systematically swapping out modules After each swap if the problem is not corrected replace the original module before swapping out the next module To test local I O first replace the output module Next replace the processor module s If the problem persists take all of the modules out of the backplane except one processor module and the output module If the problem is now corrected one of the other modules in the rack is malfunctioning Reconnect the other modules one at a time until the problem reappears If none of these tests reveals the problem replace the backplane test remote I O first verify that the remote I O system is communicating with the drop that contains the output module being tested Next determine whether the output module is the only module in the rack that is not working If more than one module is not working correctly the problem most likely lies in the remote system If the problem does not lie in the system it probably involves the remote rack 5 2 5 2 Step 7 e Totestthe remote rack first replace the output module Next replace the slave remote I O module If the problem per
18. is also possible that the output is either not wired or wired to the wrong device Use the following procedure to isolate the problem Step 1 Step 2 Step 3 Step 4 Verify that the output module is in the correct slot and that the VO definitions are correct Refer to figure 3 3 Verify that the slot number being referenced agrees with the slot number defined in the configuration task For this module the register number is always zero Verify that the register number of the output module agrees with the D A channel number 0 3 For remote I O installations also verify that the master slot and drop number are defined correctly Verify that the isolated power supplies are working Make certain that the four LEDs on the module faceplate are lit If any of them are not lit the module is malfunctioning Verify that the terminal board is wired correctly Confirm that all connections at the terminal strip are tight Verify that each of the analog output channels is wired to the correct device and that the jumpers on the terminal strip if required are connected Refer to figures 3 1 and 2 Verify that the module can be accessed Connect the programming terminal to the system and run the ReSource Software Stop all programs that may be running Connect a voltmeter to the voltage output of each channel being checked Use the VO MONITOR function and write the values in table 1 to the channel being investigated Th
19. nce atthe end of scan BASIC tasks read an input and write an output for each reference throughout the scan BASIC Task Example 2000 COMMON DISPLAY Display value 3500 5000 DISPLAY 2048 5500 6000 END The symbolic name DISPLAY references the analog output channel Control Block Task Example 2400 COMMON DISPLAY Display value 3500 5000 CALL INVERTER INPUT 2048 8 OUTPUT DISPLAY 5500 6000 END The symbolic name DISPLAY references the analog output channel Restrictions Data Limitations Register bit 0 is not connected to the D A converter Writing to it will have no effect on the analog output value When the data is read back bit 0 will always return 0 Register bits 12 13 and 14 are also not connected to the D A converter If you expect that the digital value to be written to an output will exceed the range 4095 place a software limit on the value before writing it to the analog output Otherwise if a value greater than 44095 is written to the analog output the output will be the analog value proportional to the value of bits 1 11 and the sign bit 15 9 0 5 1 DIAGNOSTICS AND TROUBLESHOOTING This section explains how to troubleshoot the module and field connections Incorrect Data Problem The output is either always off always on or different than expected The possible causes of this are a module in the wrong slot a malfunctioning module or a programming error It
20. nnels If the module is in a remote rack enter the module slot number of the master remote I O module remote I O drop number also called the remote rack number output module slot number and register 0 3 Write a series of values to each of the channels and verify the analog voltage with a voltmeter Refer to table 1 for the approximate voltages or currents that should be read 3 3 WARNING BE CAREFUL WHEN WRITING TO THE OUTPUTS TO INSURE THAT NO UNEXPECTED MACHINE MOTION WILL RESULT FAILURE TO OBSERVE THIS PRECAUTION COULD RESULT IN BODILY INJURY OR DAMAGE TO EQUIPMENT Table 1 3 3 Module Replacement Use the following procedure to replace a module Step 1 Turn off power to the rack and all connections Step 2 Use a screwdriver to loosen the screws holding the connector to the module Remove the connector Step 3 Loosen the screws that hold the module to the rack Remove the module from the slot in the rack Step4 Place the module in the anti static bag it came in being careful not to touch the connectors on the back of the module Place the module in the cardboard shipping container Step 5 the new module out of the anti static bag being careful not to touch the connectors on the back of the module Step6 Insert the module into the desired slot in the rack Use a Screwdriver to secure the module into the slot Step 7 Attach the field terminal connector M N 57C37
21. ns for Voltage Output 3 2 Figure 3 2 Typical Field Connections for 4 20 ma Current Output 3 2 Figure 3 3 Rack Slot Numbers Figure 4 1 Organization of Register Bits 4 1 1 0 INTRODUCTION The products described in this instruction manual are manufactured or distributed by Reliance Electric Company or its subsidiaries This 4 Channel Analog Output Module contains four 12 bit D A converter channels Each channel can provide 45 volts 48 volts 10 volts or a 4 20 ma current output Output signals have 2500 volt isolation to logic common Each channel has its own independent isolated common The voltage outputs are current limited to protect the device in the event of a short circuit Typically this module is used to output voltage or current signals to devices such as drive and process controllers This manual describes the functions and specifications of the module It also includes a detailed overview of installation and servicing procedures as well as examples of programming methods Related publications that may be of interest J 2611 DCS 5000 PRODUCT SUMMARY J 3675 DCS 5000 ENHANCED BASIC LANGUAGE INSTRUCTION MANUAL e J 3600 DCS 5000 CONTROL BLOCK LANGUAGE INSTRUCTION MANUAL e J 3602 DCS 5000 LADDER LOGIC LANGUAGE INSTRUCTION MANUAL e J 3629 DCS 5000 REMOTE I O INSTRUCTION MANUAL J 3630 ReSource AutoMax PROGRAMMING EXECUTIVE INSTRUCTION MANUAL VERSION
22. oMax Version 2 1 and earlier you define system wide variables by writing a Configuration task For AutoMax Version 3 0 and later you define system wide variables using the AutoMax Programming Executive After these variables are defined you can generate the configuration file automatically which eliminates the requirement to write a configuration task for the rack If you are using AutoMax Version 2 1 or earlier refer to Appendix E for examples that show how to define variables in the configuration task If you are using AutoMax Version 3 0 or later see the AutoMax Programming Executive J 3750 for information about configuring variables 4 1 4 3 4 3 1 4 3 2 4 4 4 4 1 4 2 Reading And Writing Data In Application Tasks In order for an output module to be referenced by application software it is first necessary to assign symbolic names to the physical hardware In AutoMax Version 2 1 and earlier this is accomplished by either IODEF or RIODEF statements in the configuration task In AutoMax Version 3 0 and later you assign symbolic names using the Programming Executive Each application program that references the symbolic names assigned to the module must declare those names COMMON The frequency with which tasks or application programs read their inputs and write their outputs depends on the language being used Ladder logic and control block tasks read inputs once at the beginning of each scan and write outputs o
23. pendix D Related Components 57C374 Terminal Strip Cable Assembly This assembly consists of a terminal strip cable and mating connector It is used to connect field signals to the faceplate of the output module O o eK 2 10 2 0 2 eO e qq d D d d d d d d D 1 Appendix E Defining Variables in the Configuration Task Local I O Definition This section describes how to configure the output module when it is located in the same rack as the processor module that is referencing it i e the local rack Refer to the figure below Note that this procedure is used only if you are using the AutoMax Programming Executive software version 2 1 or earlier Processor Module 275W POWER SUPPLY POWERON O PSREADY SYSTEM READY BLOWN FUSE NORMAL ale
24. sists take all of the modules out of the remote backplane except the slave remote I O module and the output module If the problem is now corrected one of the other modules in the rack is malfunctioning Reconnect the other modules one at a time until the problem reappears If the problem proves to be neither in the remote I O system nor in the remote rack try replacing the backplane Verify that the user application program is correct If none of the above steps has corrected the problem verify that the application program that uses the symbolic names assigned to the module has defined those names as COMMON Verify that the symbolic name in question is being referenced in the application program This can be done indirectly by monitoring the name with the VARIABLE MONITOR function in the ReSource software Bus Error Problem A 31 or 51 through 58 appears on the processor module s LED This error message indicates that there was a bus error when the system attempted to access the module The possible causes of this error are a missing module a module in the wrong slot or a malfunctioning module Refer to the DCS Processor Module Instruction Manual J 3635 or AutoMax Processor Module Instruction Manual J 3650 for more information Use the following procedure to isolate a bus error Step 1 Step 2 Verify that the output module is in the correct slot and that the VO definitions are correct Refer to figure 3 3
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