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1771-6.5.3, Analog Output System User Manual

1. Figure 2 1 Switch and Pot Locations Range Selection Switches SW 1 R50 EN Offset Channel 4 SW 2 l Gain R51 R58 SW 3 ola Channel 3 J Gain SW 4 R59 R64 A Gai SW 5 ih Channel 2 Offset SW 6 R66 R73 Gain SW 7 Channel 1 Offset SW 8 R75 Module Function R Switch Assembly R82 Reference Voltage BK SW 9 11183 2 3 Chapter 2 Installation 24 Module Function Switch SW 9 Switch Assembly SW 9 selects 3 digit BCD or 12 bit binary mode single or block transfer and master or standalone Figure 2 2 Stand Alone Master Selection Switches 1 and 4 If this is the only master module in the chassis it must be selected as Master 1 If there are two masters in one chassis one must be Master 1 and the other Master 2 The protocol for transmitting data allows placement of up to two masters in the same bulletin 1771 I O chassis A master analog output module accesses its output expander modules using a bus on the backplane Two masters timeshare this bus Each master must be designated as Master 1 or Master 2 On the analog output module this is accomplished by setting Switches 1 and 4 of the module function switch SW 9 Figure 2 2 and Table 2 A Figure 2 2 Module Function Switch Assembly SW 9 No 2 ON Single Transfer OFF Block Transfer ON ON
2. OFF A No 1 No 4 ON Master 2 ON Expander OFF Master 1 OFF Stand alone or Stand alone No 3 ON BCD OFF Binary 11184 Chapter 2 Installation Table 2 A Stand Alone Master Stand Alone OFF OFF Master 1 OFF ON Master 2 ON ON Block Transfer Single Transfer Switch 2 is set for either block transfer or single transfer Table 1 A identifies which processor may be used with block transfer and which may be used with single transfer local and remote configuration BLOCK TRANSFER Block transfer programming may move up to 60 words one master and 14 expanders in a single scan from a designated area in the data table to or from the module To use block transfer Switch 2 Figure 2 2 must be OFF SINGE TRANSFER Single transfer programming may move up to 16 words one master and three expanders This type of programming shifts one word each scan from an area designated in the data table to the module To use single transfer Switch 2 Figure 2 2 must be ON BCD Binary Switch 3 is set as follows for either 3 digit BCD mode or 12 bit binary mode 3 DIGIT BCD MODE If the 3 digit BCD mode is selected Switch 3 of switch assembly SW 9 Figure 2 2 must be set ON The processor directly manipulates values in 3 digit BCD to perform mathematical comparisons This value is output to the module in the range of 000 to 999 12 BIT BINARY 2 5 Chapter 2 Insta
3. 15 volts 15 Volts 120 60 180 mA 180 mA 1 Current requirement in the Voltage Mode 15 volts 15 volts 120 MA 120 mA When the PLC remote power supply is used with an analog output module Module Power Cable Cat No 1770 CF may be used to connect power to the field wiring arm The analog power cables must be ordered separately If an equivalent power supply is chosen the user must also supply all connections A CAUTION 1 During initial power up the current requirements of the 1771 OF output module s 15V and 15V DC circuits momentarily surge up to 1A Our Cat No 1778 P2 power supply can handle this surge Any power supply you furnish must be able to handle this surge Power supplies with foldback current limiting are not recommended 2 Should either the 15V or 15V DC supply to either the 1771 OF or the 1771 E4 module fail the output circuits of that module will approach the remaining voltage Chapter 1 Introduction Document Organization Specifications 1 10 Failure to observe these cautions could result in damage to the module circuitry and unexpected machine operation This document describes the installation operation programming and calibration necessary to use the analog output module and the output expander module Subsequent chapters of this manual are organized as follows Chapter 2 describes module hardware outlines procedures for preparation installation and connection
4. Allen Bradley Analog Output System User Manual Cat No 1771 OF Series B and 1771 E4 Important User Information Because of the variety of uses for this product and because of the differences between solid state products and electromechanical products those responsible for applying and using this product must satisfy themselves as to the acceptability of each application and use of this product For more information refer to publication SGI 1 1 Safety Guidelines For The Application Installation and Maintenance of Solid State Control The illustrations charts and layout examples shown in this manual are intended solely to illustrate the text of this manual Because of the many variables and requirements associated with any particular installation Allen Bradley Company cannot assume responsibility or liability for actual use based upon the illustrative uses and applications No patent liability is assumed by Allen Bradley Company with respect to use of information circuits equipment or software described in this text Reproduction of the contents of this manual in whole or in part without written permission of the Allen Bradley Company is prohibited Throughout this manual we make notes to alert you to possible injury to people or damage to equipment under specific circumstances WARNING Tells readers where people may be hurt if procedures are not followed properly CAUTION Tells readers where machi
5. 0 to 20 mA 20 to 20 mA 4 to 20 mA 4 to 20 mA 24 26 40 4 55 71 81 4 53 55 63 81 4 55 64 72 81 55 64 72 82 20 22 37 3 51 69 83 3 49 51 61 83 3 51 62 70 83 51 62 70 84 16 18 34 2 47 67 85 2 45 47 59 85 2 47 60 68 85 41 60 68 86 12 14 81 1 43 65 87 1 41 43 57 87 1 43 58 66 87 43 58 66 88 4 18 Chapter 4 Calibration Current Zero 2 Adjustment Place additional load resistance in series with the precision load resistor Step 2 Current Zero 2 is measured across the precision load resistor 6 10 11 12 13 14 15 16 Turn off the 15V DC power supply Connect the 4 596 250 ohm resistor in series with the 250 ohm precision resistor Connect the DVM across the 250 ohm precision resistor measured in Step 5 of Current Zero 1 adjustment Turn on the 15V DC power supply Adjust current Zero 2 Table 4 M until the DVM indicates 4 9976V 0 1mV Turn off the 15V DC power supply Remove all test equipment load resistors and the field wiring arm Set switches on the output module and plugs on the expander module for your application Install covers and tighten screws Install the output module and expander modules Attach the field wiring arm 4 19 General Block Transfer Troubleshooting This chapter is based on the diagnostic capabilities provided by the LED indicators on the front of the analog output module a
6. 44 57 Maximum or Minimum Output Each channel is individually selectable for maximum or minimum output during power up or reset which occurs when the PC processor is in the program mode in the current or voltage range previously selected Table 2 F identifies the programming plugs For minimum output a plug is inserted The plug is left out for maximum output Compliance Compliance is defined as the maximum allowable load impedance in the current mode The standard compliance of the output module is 600 ohms Additional compliance allows a maximum load impedance of 1100 ohms on 4 to 20 mA range only Additional compliance is obtained by internally referencing the Lead terminal to the 15V DC terminal Select standard or additional compliance by inserting plugs according to Table 2 E Table 2 E Current Mode and Range Selection Channel Current Ranges Number Mode Std Compliance Add Compliance 0 to 20 mA 20 to 20 mA 4 to 20 mA 4 to 20 mA p 24 26 40 4 55 71 81 4 53 55 63 81 4 55 64 72 81 55 64 72 82 20 22 37 3 51 69 83 3 49 51 61 83 3 51 62 70 83 51 62 70 84 16 18 34 2 47 67 85 2 45 47 59 85 2 47 60 68 85 47 60 68 86 aaa 12 14 31 1 43 65 87 1 41 43 57 87 1 43 58 66 87 43 58 66 88 2 10 Connections Chapter 2 Installation Table 2 F Max Min Output Plugs NOTE Insert plugs for minimum output and remove for maximum output WA
7. A read block transfer returns one diagnostic word Figure 3 4 The output expander module fault bits 15 00 set to ON indicate a fault in output expander modules 1 14 Table 3 C correlates output expander module number bit relationship The power available bit 16 set to ON indicates power available signal present at the wiring arm The diagnostic bit 17 is set to ON whenever there is a fault in an output expander module Fault Bit ON 1 an Expander Fault Exists OFF 0 Normal Operation Power Available Bit ON 1 Power is Available OFF 0 Power is Not Available Expander Fault Bits ON 1 for a fault bit 17 will also be ON Refer to Table 3 C for Expander Identification vs Fault Bit Chapter 3 Programming Figure 3 4 Block Transfer Diagnostic Word 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 11190 Block Transfer Update Time Refer to Figure 3 5 Update time is defined as the time from the end of a block transfer until all output have been updated and the module is available for another block transfer After each block transfer the analog output module scans the complete system and updates all channels Once a block transfer is completed no further transfers will be accepted until all channels have been updated and diagnostics performed The update time includes all channels whether data has changed of not When the analog output module is used without expander modules the scan rate is 35 msec ch
8. 2 Output Expander Module 4 1 Troubleshooting 5 1 TT ET CIR 1 Table of Contents Block Transfer Program Generali sita eine ea ri ii Overview Single Transfer Program General sn eo eee ew aaa Sample Programs a T gt G i les X T ro General Introduction The Analog Output Module 12 bit Assembly Cat No 1771 OF Series B and the Analog Output Expander Module Assembly Cat No 1771 E4 are plug in modules that produce application dependent analog signals at their outputs These modules form the analog output system This chapter introduces and describes this system Intelligent modules have an on board processor The programmable controller also has a processor The programmable controller processor shall be referred to as the PC processor The module s processor shall be referred to as such The Analog Output Module Cat No 1771 OF Series B hereafter referred to as the analog output module is a two slot module which has four single ended output channels Figure 1 1 AIl channels of the output module have the same current or voltage range 1 to 5V DC 0 to 10VDC 10 to 10V DC 0 to 5V DC 4 to 20mA 0 to 20mA and 20 to 20mA The analog output module may be used alone or with associated analog output expander modules Note that the Analog Output Module 12 bit Assembly Cat No 1771 OF Series A not covered in this manu
9. Block Length 00 DN File 300 377 07 120 Write Watchdog Timer 035 3 iz TON 06 0 1 PR 010 AC 001 035 Write Flag Bit 022 4 t 15 00 120 Read Watchdog Timer 036 5 MME TON 07 PR 0 1 AC 000 036 Read Flag Bit 022 6 15 01 300 Expander Fault 022 7 lI L 17 05 SC Loss of Power i 200 201 202 203 24 2065 206 207 208 29 210 010 8 ig _ e _ e e e e 6 4 6 4 44 G 222 3833 444 555 666 77 888 999 88 777 666 00 211 212 213 214 215 022 010 9 8 18 16 16 16 16 ES 555 444 333 222 199 000 01 Alarm Bit Bits 0 1 5 200 215 Value in Channel 111 Acknowledge Expander Fault Loss of Power Alarm 022 10 Pr U 00 05 073 032 ki iG PUT 000 000 A 2 Appendix A Block Transfer Program Table A A Program Description Block Transfer Write Block Transfer 030 This is an unconditional write block transfer The module is located in Rack 2 Module Group 0 and Slot 0 Block Length 00 is the default value and causes up to 60 words to be written to the module Temporary analog values to be stored in Words 200 277 Bit 020 06 is the enable bit and 120 06 is the done bit Read Block Transfer 031 This is an unconditional read block transfer The module is located in Rack 2 Module Group 0 and Slot 0 Block Length 00 is the default value and only one word will be read from the module It will be the first word in File 300 377 Bit 020 07 is the enable bit and 120 07 is the done bit Write Watc
10. If no power up faults are detected the diagnostic LED is turned OFF 3 Ifthe analog output module has been designated as a master a backplane search for the output expander modules programmed to this master is initiated If a gap is found in the output expander module map i e output expander 1 output expander 3 but no output 3 11 Chapter 3 Programming expander 2 the diagnostic LED remains illuminated and the appropriate diagnostic bits are turned on in the status word The analog output module continuously checks module status while waiting for the first transfer block or single request Normal Operation The following checks and responses can occur after the analog output module has passed the initialization check 1 Theanalog output module FAULT LED is OFF and the output expander module DC ON LED is ON during normal operation 2 Module diagnostics consist of testing power available on the field wiring arm and testing each output expander for loss of power or loss of communication When a fault is detected the appropriate status bit s are turned ON in the status word The red diagnostic LED on the output will flash ON and OFF if the PC processor is operating in the program or test mode It will be on steady if the PC processor is operating in the run mode 3 For most faults the outputs will remain in their last state See OTable 5 A in Chapter 5 If the analog output module loses communication with one of t
11. Interface Capabilities Block Single Transfer Processor Transfer Local 1 Mini PLC 2 15 Cat No 1772 LV Mini PLC 2 Cat No 1772 LN3 Mini PLC 2 Cat No 1772 LN1 LN2 PLC 2 20 Cat No 1772 LP1 LP2 PLC 2 30 Cat No 1772 LP3 PLC 3 Cat No 1775 L1 L2 PLC Cat No 1774 LB2 LC2 PLC 2 Cat No 1772 LR 1 I O modules interfaced with the processor via I O Adapter Module Cat No 1771 AL 2 IO modules interfaced with the processor via a remote I O Scanner Distribution Panel and Remote I O Adapter Module Cat No 1771 AS 3 I O modules interfaced with PLC Processor and Remote I O Adapter Cat No 1771 AR CAUTION Single transfer interface must not be used in remote applications except with the PLC Programmable Controller The information provided in this chapter supplements the information provided in related manuals Each programmable controller user s manual or programming manual includes a detailed user s instruction set for its processor and operating procedures for using an industrial terminal or 3 1 Chapter 3 Programming Operational Overview 3 2 other programming panel to write a user program into memory of the processor The PC processor transfers digital values to the analog output module Figure 3 1 The analog output module converts the digital values to analog signals which are output to analog devices The PC processor examines the output module status to detect fault con
12. PC processor in the program and run modes Single Transfer Bit 17 1 One or More Bits Oto 15 1 Bit 6 1 Bit 7 1 One or More Bits 0t02 1 Block transfers are not being performed Bit 17 1 One or More Bits Oto 15 1 Bit 6 1 Bit 7 1 One or More Bits Oto2 1 Output voltage not responding as programmed Bit 17 0 Block Transfer Not Performed Bit 17 0 Block Transfer Not Performed Not Applicable No indication No Indication No Indication No Indication 5 2 Probable Cause Output expander address or master programming plugs have been mis programmed Output module has failed self diagnostic tests The output module is programmed as Master 2 without a Master 1 in the I O chassis Module not programmed correctly a Block Transfer Block transfer length is greater than the number of channels available for update Single Transfer Invalid channel requested for update Block transfer instruction misprogrammed An invalid BCD number was sent when the module is programmed for BCD 2 Two output expander modules are programmed for the same address Recommended Action Output expanders must be numbered consecutively Reprogram as required Cycle power to attempt to clear fault Replace faulty output module if necessary When only one master is in the I O chassis it must be programmed as Master 1 Output expanders must be programmed to respond to Master 1 or M
13. Selection Insert Remove Output Expander Module Addressing The output expander modules must be numbered in consecutive order One cannot skip output expander module numbers i e Expander 1 Expander 3 but no Expander 2 The maximum number of output expander modules is 14 when using block transfer or 3 when using single transfer Table 2 C Table 2 C Output Expander Module Addressing 77 78 79 80 em e 1 80 2 79 3 79 80 1 4 78 5 78 80 6 78 79 7 78 79 80 8 77 9 71 80 10 77 79 11 77 79 80 12 77 78 13 77 78 80 14 77 78 79 1 Only three output expander modules may be used with the output module when single transfer programming is used Current or Voltage Mode Selections Select the voltage range Table 2 D or current range Table 2 E for the output expander module Each channel is individually selectable Insert the programming plugs corresponding to these selections It is not necessary to recalibrate the output expander module each time a change range is changed 2 9 Chapter 2 Installation Table 2 D Voltage Mode and Range Selection Channel Voltage Ranges Number Mode Oto 5V DC 1 to 5V DC 5t0 5VDC Oto 10VDC 10to 10V DC EH 23 25 39 81 55 71 55 64 72 53 55 63 D 54 56 63 19 21 36 83 51 69 51 62 70 49 51 61 o9 50 52 61 2 19213683 15 17 33 85 47 67 47 60 68 45 47 59 4 46 48 59 11 13 30 87 43 65 43 58 66 41 43 57 42
14. an is LAA TT TT ES gt amm 17946 Chapter 1 Introduction Analog Output Module 1771 OF Series B This intelligent I O module provides up to four single ended output channels Repeatedly it scans the on board memory converts digital words to analog values and outputs them to analog devices The value word is user selectable Depending on the mode of transfer selected the 16 bit word is composed of 12 bits of output signal and 4 channel select bits for single transfer The four remaining bits are not used in block transfer The output signal may be selected in 12 bit binary or three digit BCD Selection of the binary format provides a resolution of one part in 4096 while selection of the three digit BCD format provides a resolution of one part in 1000 Module specifications are provided in Chapter 1 under Specifications Analog Output Module Figure 1 2 Analog Output Expander Module Assembly Cat No 1771 E4 Chapter 1 Introduction Table 1 A Processor Interface Capabilities Block Single Transfer Processor Transfer Local 1 Mini PLC 2 15 Cat No 1772 LV Mini PLC 2 Cat No 1772 LN3 Mini PLC 2 Cat No 1772 LN1 LN2 PLC 2 20 Cat No 1772 LP1 LP2 PLC 2 30 Cat No 1772 LP3 PLC 3 Cat No 1775 L1 L2 PLC Cat No 1774 LB2 LC2 PLC 2 Cat No 1772 LR 1 IO modules interfaced with the processor via I O Adapter Module Cat No 1771 A
15. as possible Most importantly the shield must be properly grounded at one end only There is an LED indicator on the front of each module Figure 2 5 These indicators are useful for monitoring module activity and troubleshooting Figure 2 5 Diagnostic Indicators 1771 OF Module 1771 E4 Module 17947 2 13 Chapter 2 Installation Keying the Modules The Analog Output Module The analog output module has a red fault LED which is normally OFF If the processor is operating in the program or test mode when a fault occurs the LED flashes alternately ON and OFF If the processor is operating in the run mode the LED is ON continuously During power up the LED is ON continuously for the following reasons 1 Module has failed self diagnostics 2 Improper programming plug selection when used with an expander 3 Expander fault The Output Expander Module The output expander module has a green DC ON LED which is ON when 15V and 15V DC are present CAUTION The analog output module must be inserted in the I O chassis so that both halves of the module are in the same I O module group Failure to observe this rule will result in faulty module operation and may result in damage to module circuitry In initial design stages the analog output module and the output expander module may be inserted into any slot except the leftmost slot of the I O chassis However once specified slots have been designated for a mod
16. bits GET 022 contains a bit 022 00 write flag bit 022 01 read flag bit and the hardware fault bit 022 05 These rungs are not essential to the program and are provided for display purpose Another technique to display the analog out put values would be to place the cursor on the write block transfer instruction and use the DISPLAY capabilities of the industrial terminal Acknowledge Alarm Resets Alarm Bit 022 05 after an expander fault or power failure has been detected Boundary between block transfer data addresses and T C addresses A 3 General Appendix Single Transfer Program This appendix has two sample single transfer programs and program descriptions The same program may be entered in a PLC or PLC 2 family processor The only difference between the two programs will be the address and types of output instructions The interpretation of these instructions is shown in Table B A These programs show how to access One 1 channel for test purposes Sixteen 16 channels include one analog output module and three output expander modules The output channel is selected by setting Channel Select Bits 14 17 Table B B in the output image table word which corresponds to the analog output module s I O chassis location The bits are actually set in the intermediate word The interpretation of these bits is shown in Table B A Data is transferred from the intermediate word address corresponding to each chann
17. channel calibration Once set it need only be checked at intervals 1 Connect the high lead of the DVM to the VREF test point 2 Connect the ground lead of the DVM to Terminal 2 of the field wiring arm Figure 4 5 3 Turn on the 15V DC power supply 4 Adjust the reference voltage pot R37 Figure 4 4 for an indication of 10 0000V 0 1mV Table 4 J Master Selection 9 10 27 28 Master Selection Table 4 K Max Min Output Plugs Channel Number 4 NOTE Insert plugs for minimum output and remove for maximum output Chapter 4 Calibration Table 4 L Voltage Mode and Range Selection Channel Voltage Ranges Number Mode 0 to 5V DC 1 to 5V DC 5 to 5V DC Oto 10VDC 10 to 10V DC VOLTAGE MODE ADJUSTMENT Third you will make two different adjustments for correct upper and lower limits Voltage Zero Voltage Gain Voltage Zero is measured and adjusted at two different points in the circuit This adjustment is repeated until the two measurements are equal Then adjust the voltage gain Voltage Zero 1 Adjustment Voltage Zero 1 is measured at a specific point within the channel or a test point 1 Connectthe ground lead of the DVM to the channel s field wiring arm terminal Figure 4 5 2 Connect the high lead to the channel s test point Figure 4 4 3 Set the reset power up jumper for minimum output Table 4 K 4 Adjust Zero 1 Table 4 M until the
18. from or inserted into the I O rack while system power is ON Failure to observe this rule may result in damage to module circuitry Analog Output Module Master Selection An output expander module must be programmed to respond to Master 1 or Master 2 Table 2 B Chapter 2 Installation Figure 2 3 Programming Plug and Pot Locations Rev 04 Channel 3Adjust Channel 2 Adjust Channel 4 Adjust Cur Volt Zero 1 Volt Zero 1 Cur Zero 2 Cur A 2 Cur Gain Zero 2yo Zem ero Zero 2 olt Cur Volt Zero 1 Zero 2 we i Gain Volt Zero p L Zero 1 RIRR RRIRIRIRIRIR R R R 2 3 4 5 6 7 8 9101112 161718 1 3 2 8 3 8 Als 5 8 6 8 zl 8 8 Magie Ha 1572 1915 2313 R31 La Gain chanrel 2 CH4 49 6 CH3 46 6 CH2 90 0 CHI 2412 Cur Zero 1 R32 ra 9 9 Mode 13 3 Mode 179 Mode i 2 Mode 252 10 0 1419 18 0 22 0 2613 R33 La Volt Zero 2 Channel 1 27 o 30 9 33 0 3600 39 0 R84 La Cur Zero 2 Adjust 28 5 316 sad ag 4018 R35 e Volt Zero 1 41 45 49 53 i 42 9 48 9 5p o 549 R36 re Gain 43 o 47 o 51 0 55
19. of the module Chapter 3 describes operation and programming necessary for block transfer and single transfer Chapter 4 describes the proper procedures to calibrate an analog output module and an output expander module Chapter 5 outlines troubleshooting procedures Appendix contains sample programs for block transfer and single transfer This section lists the specifications of the analog output module and the output expander module Chapter 1 Introduction Analog Output Module Outputs per Module e 4 Single Ended Module Location e Bulletin 1771 I O Chasis One Module Group Two Adjacent Slots Output Voltage Ranges Nominal e 1t0 5V DC 0 to 5V DC 10 to 10V DC 0 to 10V DC Output Current Ranges Nominal e 4to 20 mA e 010420 mA e 20 to 420 mA Digital Resolution e 3 Digit BCD or 12 Bit Binary BCD Input from Processor e 000 to 999 for Any Output Range Binary Input from Processor e 0000 to 7777g for Any Output Range BackPlane Power e 14A Output Overload Protection e All outputs are protected against short circuit load conditions not to exceed one minuite D A Converter Specifications Setting Time e 100usec Maximum for a Resistive Load Internal Scan Rate e 35 msec Channel without Expanders e 61 msec Channel with Output Expanders Output Impedance e 0 25 ohms for Voltage Outputs Exclusive of Contact Wiring Resistance e 1 5 megohms for Current Outputs Max Outp
20. the other containing the block transfer write instruction When both instructions are given the same module address the pair are considered as bi directional block transfer instructions The operation of bi directional block transfer is similar to that described in Chapter 3 Block Transfer Interface Additional consideration for bi directional operation will be described using an example read and write instruction with equal block lengths having the following parameters WRITE Instruction Data Address 030 Module Address 200 Block Length 00 File 200 277 READ Instruction Data Address 031 Module Address 200 Block Length 00 File 300 377 For write and read instructions Block Length 00 sets aside 64 words However the processor writes only up to 60 words maximum It writes only as many words as the system has channels The processor reads only one word at a time The file should contain the number of words which correspond to the total number of output channels based on the number of analog output modules and output expander modules A 1 Appendix A Block Transfer Program Figure A 1 Application Program Block Transfer Rung No Write Block Transfer 020 BLOCK XFER WRITE EN 1 Data Address 030 06 Module Address 200 120 Block Length 00 File 200 277 mobi 06 5 Read Block Transfer BLOCK XFER READ VEN Data Address 031 07 Module Address 200 120
21. 0217 9 30314 10 ey aa 30315 11 30316 12 30317 13 WE 90414 14 90415 15 B 5 Appendix B Single Transfer Program Figure B 2 Application Program Single Transfer with Three Expanders Cont d Rung No 30416 16 kd 30417 17 d 30514 18 30515 19 3 30516 a pr 30517 21 I 30614 22 30615 23 Jj 30616 24 30617 25 LE 30714 26 I 30715 27 30716 28 30717 a I 31014 30 B 6 Appendix B Single Transfer Program Figure B 2 Application Program Single Transfer with Three Expanders Cont d Rung No 81015 81 31016 32 81017 33 E E 31114 34 C 31115 35 C1 31116 36 ME 81117 37 o 31214 38 31215 39 Cd 31216 40 CH 31217 41 31314 42 1 31315 43 31316 44 1 31317 45 Co B 7 Appendix B Single Transfer Program Figure B 2 Application Program Single Transfer with Three Expanders Cont d Rung No 31414 46 31415 47 31416 48 M 31417 49 31514 50 1 31515 51 i 31516 52 31517 53 31614 54 31615 55 l 31616 56 31617 57 31714 58 31715 59 31716 60 B 8 Rung No 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 Figure B 2 Application Program Single Transfer with T
22. 2005 84 AL END 01177 B 10 B Block Transfer Bidirectional 3 4 A 1 Block File 3 4 A 1 Block Length _3 6 Capability 1 1 1 4 Default Value _3 6 Diagnostic Word _3 6 Output Word 3 4 3 6 Sample Program A 1 A 2 Scan Rate 3 7 Update Time 3 7 Words Max 2 5 C Calibration Analog Output Module 4 2 Gain Adjustment 4 9 Offset Adjustment 4 9 On Line Data Change 4 8 Preparation 4 2 Reference Voltage Adjustment 4 4 Typical Channel 4 4 Output Expander Module 4 10 Current Mode Adjustment 4 18 Zero 1 4 18 Zero 2 4 19 Preparation 4 11 Reference Voltage Adjustment 4 14 Test Bench 4 10 Voltage Mode Adjustment 4 15 Gain Adjustment 4 17 Zero 1 4 15 Zero 2 4 17 Capacity Output With Expanders 1 5 Without Expanders 1 5 Compliance Definition 2 10 Configurations UO Rack 2 1 Master Module 2 2 2 4 Standalone Module 2 2 Current Backplane Analog Output Module 1 8 Output Expander Module 1 8 Remote Power Supply 1 8 Surge 1 9 Index Mode BCD 2 5 Binary 2 6 Noise Minimized 2 1 0 On Line Data Change 4 8 Output Maximum 2 10 Minimum 2 10 R Range Analog Output Module Current 1 1 Voltage 1 1 Output Expander Module Current 1 1 Voltage 1 1 Recalibration Analog Output Module 1 6 Output Expander Module 1 1 1 7 Resolution BCD 1 3 Binary 1 3 S Single Transfer Channel Select Word 3 9 B 1 Diagnostic Word
23. 3 9 Output Word 3 9 Remote Application 1 2 Sample Program _B 1 I 2 Index Single Channel B 2 16 Channel B 2 Test Program B 2 Words Max 2 5 Size System Block Transfer 1 6 Single Transfer 1 6 Switch BCD Binary 2 5 Block Transfer Single Transfer 2 5 Standalone Master 2 4 W Word Diagnostic Block Transfer 3 6 Output 3 4 Ou Rockwell Automation Allen Bradley a Rockwell Automation Business has been helping its customers improve pro ductivity and quality for more than 90 years We design manufacture and support a broad range Allen Bradley of automation products worldwide They include logic processors power and motion control devices operator interfaces sensors and a variety of software Rockwell is one of the worlds leading technology companies Worldwide representation rr eq GU Argentina e Australia e Austria e Bahrain e Belgium e Brazil e Bulgaria e Canada e Chile e China PRC e Colombia e Costa Rica e Croatia e Cyprus e Czech Republic e Denmark e Ecuador e Egypt e El Salvador e Finland e France e Germany e Greece e Guatemala e Honduras e Hong Kong e Hungary e Iceland e India e Indonesia e Ireland e Israel e Italy e Jamaica e Japan e Jordan e Korea e Kuwait e Lebanon e Malaysia e Mexico e Netherlands e New Zealand e Norway e Pakistan e Peru e Philippines e Poland e Portugal e Puerto Rico e Qatar e Romania e Russia CIS e Saudi Arabia e Singapore
24. 60 mA 0 040 mA BIt 12 Bit Binary Operating Mode Nominal BCD Output Output Range Code Range Voltage Range A VBit 4 to 20mA 000 7777 4 to 19 9961mA 0 0039 mA Bit 0 to 20mA 000 7777g 0 to 19 9951mA 0 0049 mA BIt 20 to 20mA 000 7777g 20 to 19 9902mA 0 0098 mA Bit NOTE 1 All outputs of the analog output module must operate at the same value The module must be recalibrated when a range is changed 2 Outputs of the output expander module may operate at different values The module does not require require recalibration when a range is changed Power for the analog output module and the output expander module is derived from two sources the I O chassis power supply and user furnished external power supply UO Chassis Power Supply The analog output module requires a current of 1 4A and the output expander module requires a current of 165mA from the 5V DC circuit of the power supply These amounts must be totalled with the current requirements of other modules in the I O chassis to avoid overloading the supply One analog output module and 14 output expander modules can be powered in one chassis Chapter 1 Introduction External Power In addition to I O chassis power a separate external power supply is required for the analog output module and the output expander module Refer to Table 1 E and Table 1 F for the external power requirements The PLC Remote Power Supply Cat No 1778 P2 or equivalent may be used
25. 960V 0 1 mV 4 9960V 0 1 mV 4 9950V 0 1 mV 9 9900V 0 1 mV 9 9800V 0 1 mV 4 9990V 0 1 mV 4 9980V 0 1 mV 4 9990V 0 1 mV 4 9990V 0 1 mV 4 9990V 0 1 mV 4 9980V 0 1 mV 9 9950V 0 1 mV Across the 250 ohm Resistor Across the 1 2K ohm Resistor The output expander module can be calibrated on a test bench with a 15V DC power supply You will perform four steps Prepare the output expander module Set the reference voltage Calibrate for voltage mode operation Calibrate for current mode operation Output expander module channels are individually adjustable to any specified voltage or current range If the range is changed the output expander module does not have to be recalibrated Chapter 4 Calibration PREPARATION First prepare the module by Master module selection Output expander module addressing Power up and reset output selection 1 10 Remove the output expander module Remove the screws and component side cover Remove all programming plugs from Channel Mode Channel Range Master 1 2 Expander ADDR and Channel Return areas Insert the following plugs and these plugs only Select Master 1 Figure 4 4 Insert programming Plugs 9 and 27 Table 4 J Insert Plug 80 This is Expander 1 Insert plug for minimum output Table 4 K Set the channel plugs for voltage mode and 0 to 10 volt range Table 4 L Attach a field wiring arm Connect a 1000 oh
26. DVM indicates 0 0000V 0 1mV Chapter 4 Calibration Figure 4 5 Connection Diagram CAUTION No Protection is Expander N pete on the module for Terminal Identification Module he Misapplication of supply FE Output Cat No 1771 E4C 1771 E4 voltages Terminal Identification Module l Cat No 1771 OFC 1771 OF Function amp Terminal Function amp Terminal Channel 1 Lead Channel 1 Lead Channel 2 Lead Channel 2 Lead Channel 3 Lead Channel 3 Lead Channel 4 Lead Channel 1 Output Channel 2 Output Channel 1 2 Common Channel 3 Output n Channel 4 Output Channel 3 4 Common Power Available TATA User Analo DALL Geo BEER Analog w Device o YO 1A WIN oo NDN Fons Channel 4 Lead Power Wat 15Vdc 9 15V DC 15Vdc 10 15V DC Not Used 11 5VDC 15V Common 12 Common e ii Chassis ground M mounting bolt User Pe NOTES The Power Available and Power Available Common Terminals are designed to be connected to a power supply which provides Power Available Signal If the power supply does not provide a Power Available Signal jumper terminals 7 and 8 together If these terminals are not jumpered the module will not function supply All commons are tied together internally Ground cable to I O chassis at module end only 11186 4 16 Chapter 4 Calibration Table 4 M Adjustment Pot Identification Refer Volta
27. F Channel 3 1771 OF Channel 4 1771 E4 Channel Expander No Number RON AWM A VIN HT A 0N RHONDA RHONDA RWONMH P 0 NH A 0 NT RHONDA A 0NT RHONDA BRWONDHARWDY A 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 Figure 3 3 Block Transfer Output Word 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Output signal 3 digit BCD or Set to 12 Bit Binary Hor 11189 3 5 Chapter 3 Programming 3 6 Block Length Each block transfer is set for the number of output words to be transferred from the PC processor to the analog output module The number of words requested by the write block transfer instruction must be a valid number of the module from 1 to 60 The block length can also be set at the default value This is particularly useful when programming bi directional block transfers A value of 00 is entered for the default value The maximum length of a write block transfer is 60 words and 1 word for a read block transfer Enter the default value for read and write block transfers and the module will automatically transfer the exact number of channels the system is configured for Read Block Transfer File Read block transfer returns only one diagnostic word Typically block transfer is considered a block of data containing many words However a read block transfer for the analog output module is only one word long This word contains all necessary information Diagnostic Word
28. H2 Jumper vet Storage 3176 CHI Min Max Output 81 2 CH1 82 3 RET 83 o CH2 PADDR 84 3 RET 7718 85 2 CH3 788 865 RET 79 8 87 CHA 80 5 88 5 RET 11185 4 12 Chapter 4 Calibration Figure 4 4 Programming Plug and Pot Locations Rev 04 Continued rlo lo BE O LIG 13 216 LIO O zo lo O Master ra a Af O IB o Cie os Bic ce o om BIO ao elle E16 20 0 AO bs Mode BIS Mode 170 Mode 21 3 Mode 2 5 5 1416 1813 225 O ci o a IO l go io LIS SIS 4o o 19 PIE DA o zO a O 416 45 O 2 0 S lS 18 Hp 3 5 M o 48 0 aL G d s 3o 4 0 48 o 52 S CH4 O CH3 lo CH2 alg CH1 ax es 7 63 Range ze Range EX Range 629 Range 64 co lo S sr IO 13 lo 690 D 6 o 813 10 o Die TP1 CHi o 0 TP2 CH2 O O B CM TP3 CH3 O TP4 CH4 O S Ga CH3 TP5 VREF O Ol Gl CH2 31736 CHI Storage Min Max Output 8 e CH 1 O RET ESI d 5 C H2 amp OIRET Expander m ADDR E Q CH3 86 e O RET a 18 c C CHA4 O Ae wS O RET ae Ze 4 13 Chapter 4 Calibration REFERENCE VOLTAGE ADJUSTMENT Second adjust the reference voltage You do not have to adjust reference voltage before each
29. L 2 VO modules interfaced with the processor via a remote I O Scanner Distribution Panel and Remote I O Adapter Module Cat No 1771 AS 3 I O modules interfaced with PLC Processor and Remote I O Adapter Cat No 1771 AR The Analog Output Module 12 bit Assembly Cat No 1771 OF includes the following One Analog Output Module 12 bit Cat No 1771 OFC One 12 Terminal Field Wiring Arm Cat No 1771 WB One Product Data Publication 1771 918 The analog output module accommodates any one of seven output ranges each ordered from the factor by specifying a two digit code suffixed to the catalog number Table 1 B Modules can be recalibrated in the field with appropriate test equipment to condition them for other than the range ordered Applications Chapter 1 Introduction Table 1 B Catalog Number Range Codes 1771 OF 1771 OF XX i Identifying Code E Mode kay Range 01 1 to 5V DC TT 02 0 to 5V DC Basic oltage 03 10 to 10V DC Catalog No 04 0 to 10V DC 05 4 to 20 MA Current 06 0 to 20 mA 07 20 to 20 mA Analog Output Expander Module 1771 E4 The analog output expander module provides up to four output points for which it provides signal conditioning The analog output module communicates digitally with the output expander module via part of the backplane In this way the output expander module provides output expansion for the a
30. RNING To avoid injury to personnel and damage to equipment disconnect and lockout AC power from the controller and system power supplies before module installation and wiring User devices are connected to a field wiring arm Cat No 1771 WB The field wiring arm pivots on the front of the I O chassis to connect with the module Because wiring connections are made at the field wiring arm an analog output module or an output expander module can be removed from the chassis without the need to disconnect user wiring The connection diagram Figure 2 4 illustrates connections to an analog output module or an output expander module There are no direct wiring connections between an analog output module and an output expander module A label on the side cover also identifies terminal connections Additional space for user labeling is provided on the front of the modules and on the field wiring arms themselves CAUTION Modules must not be removed from or inserted into the I O rack while system power is ON Failure to observe this rule may result in damage to module circuitry 2 11 Chapter 2 Installation Terminal Identification Figure 2 4 Connection Diagram A ited ee No SE A is E rovided on the module for pee fhe Misapplication of supply Output voltages Terminal Identification Module Cat No 1771 E4C 1771 E4 Cat No 1771 OFC 1771 OF Function amp Terminal Channel 1 Lead Channel 1 Lead Channel 2 Le
31. The PLC remote power supply provides external power to a maximum of four analog output modules or five output expander modules in the current mode If the external supply is used to power these modules it must not be used for I O rack power Table 1 E Analog Output Module Power Requirements Specifications 5 Volts 15 Volts 15 Volts Current per Analog Output Module 1 250 mA 250 mA Voltage Tolerance 1 1 Regulations Type Series Series Line Regulations for 10V AC Input Change 02 02 Load Regulation 02 02 Ripple 2mV RMS 2mV RMS Overvoltage Protection 18 volts 18 volts NOTE Current requirements in the Current Mode are based on the equation Current 170 mA 20 mA x Number of Current Outputs 1 Current requirements in the Voltage Mode 15 Volts 15 Volts 170 mA 170 mA Chapter 1 Introduction Table 1 F Output Expander Module Power Requirements Specifications 15 Volts 15 Volts Maximum Current 1 per Analog Output Module 1 200 mA 200 mA Voltage Tolerance 1 1 Regulations Type Series Series Line Regulations for 10V AC Input Change 0 02 0 02 Load Regulation 1 0 1 0 Ripple at Swingarm 10 mV p p 10mV p p Overvoltage Protection 18 volts 18 volts NOTE Current requirements in the Current Mode are based on the equation Current 120 mA 20 mA x Number of Current Outputs EXAMPLE Module selected for 1 Voltage Output and 3 Current Outputs Current 1204 20x3
32. ad Channel 2 Lead Channel 3 Lead Channel 3 Lead Channel 4 Lead Channel 4 Lead 15Vdc 15Vdc Not Used 15V Common 2 12 Function amp Terminal a User Analog C Device Channel 1 Output Channel 2 Output Channel 1 2 Common Channel 3 Output Channel 4 Output Channel 3 4 Common Power Available Low True 2 Power Available Common 15V DC 15V DC 5VDC Common o YO Oo E WIN oo NDN A WIN CO o VO Chassis ground mounting bolt User power NOTES The Power Available and Power Available Common Terminals are designed to be connected to a power supply which provides Power Available Signal If the power supply does not provide a Power Available Signal jumper terminals 7 and 8 together If these terminals are not jumpered the module will not function supply All commons are tied together internally Ground cable to I O chassis at module end only 11186 Indicators Chapter 2 Installation Output Cables for Analog Output Module and Output Expander Module The modules use shielded cable for signal transmission to the analog devices Belden 8761 or equivalent is recommended This cable consists of a single insulated twisted pair conductors covered along its entire length by a foil shield The shield reduces the effect of induced noise at any point along the cable In order to do this the shield must cover the enclosed pair of wires as completely
33. al will not accommodate output expanders Output expander modules provide a method of increasing the output point capacity of a system that is more economical in cost as well as in module space than using more analog output modules The Analog Output Expander Module Cat No 1771 E4 hereafter referred to as the output expander module provides a cost and space efficient means of increasing the output capacity of a system Figure 1 2 The output expander module is a single slot module which has four single ended output channels Each channel is individually adjustable without recalibration for any of the following ranges 1 to 5V DC 0 to 10V DC 10 to 10V DC 0 to 5V DC 4 to 20mA 0 to 20mA 20 to 20mA or 5 to 5V DC Block transfer may be used with the following programmable controllers Mini PLC 2 Cat No 1772 LN3 Mini PLC 2 15 Cat No 1772 LV PLC 2 20 Cat No 1772 LP1 LP2 Chapter 1 Introduction PLC 2 30 Cat No 1772 LP3 PLC 3 Cat No 1775 L1 L2 Single transfer shifts one word each scan Single transfer may be used with the programmable controllers listed in Table 1 A applications except with a PLC controller Otherwise word integrity of the transferred data will not be maintained CAUTION Single transfer must not be used in remote Figure 1 1 Analog Output Module 12 Bit Assembly Cat No 1771 OF Series B I lo
34. annel When used with expander modules the scan rate is 61 msec channel The update time also depends upon the number of faulted output expander modules in the chassis The update time for channels on a faulted output expander module may be twice the normal update time The update time will increase when a faulted output expander module is detected as the analog output module attempts to re establish proper communication with the output expander module 3 7 Chapter 3 Programming Table 3 C Expander Identification vs Fault Bit Figure 3 5 Update Time Enabled until next Block Transfer T request is made Block Transfer Enabled Block Transfer Inhibited X 0 35 msec channel for 1771 OF Series B without Output Expanders X 0 61 msec channel with Output Expanders 11191 Single Transfer Interface The two sections below Output Word and Diagnostic Word describe the single transfer format and the associated channel select word 3 8 Chapter 3 Programming CAUTION Single transfer must not be used in remote applications except with the PLC Programmable Controller Otherwise the integrity of the transferred value words will not be maintained Refer to Table 3 A for definitions of local and remote configurations The term single transfer refers to data transfer to one channel each scan Single transfer takes place in the analog output module essentially the same way as in other I O modules with the rungs operatin
35. aster 2 The module will only allow a write block transfer less than or equal to the number of channels available in the system If block transfer is programmed for the default case i e Block Length 0 the module will allow a write block transfer corresponding to the maximum number of channels in the system and a read block transfer of one word Refer to Chapter 3 Section 3 1 on block transfer programming When configured for BCD the module will ignore invalid BCD numbers i e 95A and the output will remain at the last valid number Check the programming plug selectable address of the output expanders The analog output module cannot detect when two or more output expanders are programmed for the same address General Overview Appendix Block Transfer Program This appendix provides a sample block transfer program for programming a PLC 2 30 programmable controller to access an analog output module that has three output expander modules The only change to the sample program required to address the full 14 output expanders 60 output channels would be the addition of display rungs if they were required Bi directional block transfer is the sequential performance of read and write operations The program shown in Figure A 1 and described in Table A A directs the processor to perform bi directional block transfer Two rungs of user program are required one containing the block transfer read instruction
36. ditions When an output expander module is added Figure 3 2 the digital output values for the PC processor are transmitted through the analog output module to the output expander module All communication between the analog output system and the PC processor occurs through the output module The output module transmits digital information to the output expander module through the I O chassis backplane without any direct wiring The output expander module converts the digital output values to analog signals which are output to analog devices Output signal values are periodically transferred from the PC processor to the analog output module The module stores the data It continuously scans all output channel in the system to update them with the latest data and performance diagnostics The PC processor transfers data using either block or single transfer techniques Block transfer permits up to 60 output signal values to be transferred to the module at one time Single transfer updates the module one output signal value at a time Block transfer and single transfer are detailed in Chapter 3 under Block Transfer Interface and Single Transfer Interface respectively Figure 3 1 Chapter 3 Programming Analog Output Module Operation 2 lof Output Data Output Value D a Storage Module S
37. ditions are met the output signal value in GET 0301 is transferred from Intermediate Word 0301 and put in Address 0020 Figure B 1 One Channel Program Test Rung No 30114 1 U 30115 2 CU 2 30116 3 U 1771 OF Series B is located in Rack 2 Module Group 0 30117 4 U 0301 0020 5 Rung Condition G PUT Channel 1 value is stored in Word 0301 Channel Select Bits 14 15 16 17 are setto 0 to Select Channel 1 Rung 5 enabled to transfer Channel 1 to 1771 OF Series B Complete 16 Channel Program Table B D describes each rung in the complete program of Figure B 2 B 3 Appendix B Single Transfer Program Table B D Program Description Single Transfer with Three Expanders Free Running Timer 070 The Timed Bit 070 15 is turned on turning on Timer 070 The timer has a preset of 16 When the accumulated value equals the preset the timed bit turns off resetting Timer 070 Channel Select Rungs Channel 1 Bits 14 15 16 and 17 of Intermediate Word 301 are all EXAMINE OFF EXAMINE ON is interpreted as a one EXAMINE OFF is interpreted as a zero Therefore Channel 1 has been selected Table B A NOTE Rungs 2 through 65 operate in groups of four i e Rungs 6 7 8 9 select Channel 2 Rungs 10 11 12 13 select Channel 3 etc Since these rungs are identical in function to Rungs 2 3 4 5 in this table they have been omitted for clarity Channel 1 Transfer 0301 GET 0070 represe
38. dule Table 3 D Single Channel Transfer Select Bit Correspondence 0 0 1771 OF Channel 1 0 0 0 1 1771 OF Channel 2 0 0 1 0 1771 OF Channel 3 0 0 1 1 1771 OF Channel 4 1771 E4 Channel Expander Number Number 0 1 0 0 1 1 0 1 0 1 1 2 0 1 1 0 1 3 0 1 1 1 1 4 1 0 0 0 2 1 1 0 0 1 2 2 1 0 1 0 2 3 1 0 1 1 2 4 1 1 0 0 3 1 1 1 0 1 3 2 1 1 1 0 3 3 3 10 Chapter 3 Programming Figure 3 7 Single Transfer Diagnostic Word 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Fault Bit ON 1 an 1771 OF or 1771 E4 Fault Exists OFF 0 Normal Operation Power Available Bit ON 1 Power is available OFF 0 Power is not available Valid Channel Addressed Bit ON 1 A valid channel was addressed during the previous scan Expander Fault Bits ON 1 for a fault Bit 7 will be ON also Bit 2 Expander 3 Bit 1 Expander 2 Bit 0 Expander 1 11193 Diagnostics The following paragraphs define the self diagnostics performed by the analog output module and the output expander module at power up and during normal operation Initialization At power up the analog output module checks its internal circuitry 1 When backplane power is applied to the analog output module the red FAULT diagnostic LED illuminates The module executes tests of internal circuitry and checks the power available signal on the field wiring arm If the analog output module fails these tests it stops with the FAULT diagnostic LED still illuminated 2
39. dule always master Upto three standalone analog output modules can be used with two master analog output modules two master analog input modules one master analog output module and one master analog input module or one stepper positioning assembly or one servo positioning assembly masters Upto two standalone analog output modules can be used with one thermocouple input module always master and one master analog input module or one master analog output module EXPANDED There can be no more than two master analog output modules one master analog output module and one master thermocouple input module or one master analog input module and one master analog output module A master analog output module is not permitted with a stepper positioning assembly or a servo positioning assembly Consult the user s manual of any other intelligent I O modules involved for any grouping limitations Chapter 2 Installation Conditioning Options 1771 OF Before inserting the analog output module into its I O chassis slot you must set the module function and range selection switches Figure 2 1 These switches determine the mode of data transfer and voltage or current output range CAUTION Modules must not be removed from or inserted into the I O chassis while system power is ON Failure to observe this rule may result in damage to module circuitry
40. e Slovakia e Slovenia e South Africa Republic e Spain e Sweden e Switzerland e Taiwan e Thailand e Turkey e United Arab Emirates e United Kingdom e United States e Uruguay e Venezuela e Yugoslavia Allen Bradley Headquarters 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Publication 1771 6 5 3 September 1986 PN 955100 95 Supersedes 1771 6 5 3 September 1985 Copyright 1985 Allen Bradley Company Inc Printed in USA
41. el GET to the output image table word address corresponding to the analog output module PUT Once a value is entered into a channel the value is maintained there until a new value is entered for that channel Table B A Output Instructions Processor Bit 0 Bit 1 PLC PLC 2 Family U L B 1 Appendix B Single Transfer Program Sample Programs B 2 Table B B Channel Select Code Output Channel 1771 OF Channel 1 1771 OF Channel 2 1771 OF Channel 3 1771 OF Channel 4 1771 E4 Channel Expander Number Number 0 1 0 0 1 1 0 1 0 1 1 2 0 1 1 0 1 3 0 1 1 1 1 4 1 0 0 0 2 1 1 0 0 1 2 2 1 0 1 0 2 3 1 1 1 2 4 1 1 0 0 3 1 1 1 0 1 3 2 1 1 1 0 3 3 1 1 1 1 3 4 There are two sample programs described below The first program is a single channel program This program can be used to calibrate the analog output module The second program is a 16 channel program This is a general program which shows the required programming for one analog output module and three associated output expander modules One Channel Test Program Table B C describes each rung in the test program illustrated in Figure B 1 Appendix B Single Transfer Program Table B C Test Program Description 1 2 3 4 Bits 14 15 16 and 17 of Intermediate Word 301 are all unlatch Unlatch is interpreted as a zero latch is interpreted as a one Since all four rungs are unlatched or zeros Channel 1 is selected Table B A When rung con
42. fset Adjustment This step adjusts the offset to zero 7 Adjust the offset pot Figure 4 1 so that the DVM reading is within x 0 1 mV of the value shown in Table AH for the range selected Gain Adjustment This step adjusts the gain to maximum 8 Enter 999 for BCD or 7777 for binary Then repeat Steps 5 and 6 9 Adjust the gain pot so that the DVM reading is within 0 10 mV of the value shown in Table 4 I for the range selected 10 Seal both pots with sealant material You have finished calibrating Channel 1 Repeat Steps 2 through 10 to calibrate each of the remaining channels 11 Press CANCEL COMMAND to terminate the On Line Data Change operation 12 Turn off industrial terminal processor and I O chassis power 13 Disconnect the DVM and load resistor 14 Remove the analog output module from the I O chassis 15 Set the module function switch SW 9 as desired for your application Figure 4 1 16 Replace the component side cover 17 Replace the analog output module in the I O chassis 4 9 Chapter 4 Calibration Output Expander Module 4 10 Table 4 H Output for All Bits OFF Code 0 to 20mA 0 0000V 0 1mV 20mA 5 0000V 0 1mV 4 to 20mA 1 0000V 0 1mV Across the 250 ohm Resistor 1 0000V 0 1mV 0 0000V 0 1mV 0 0000V 0 1mV 10 0000V 0 1mV Across the 1 2K ohm Resistor Table Al Output for All Bits ON Code BCD Mode Binary Mode Load Resistor 4 9950V 0 1 mV 4 9800V 0 1 mV 4 9
43. g in groups of five That is the first four rungs select the channel The fifth rung performs the transfer Output Word The output word for single transfer Figure 3 6 is composed of 16 bits Bits 13 00 are BCD or binary output signals Channel select bits 17 14 are a 4 bit binary code which identifies the output signal with the channel number Refer to Table 3 D for the correspondence between output expander module channel select bits and output channels When there is an output expander module associated with an analog output module and single transfer is used up to 16 channels may be configured The binary coding of the channel select word is used to select both the output expander module and the channel Refer to Table 3 D for the correspondence between output expander module channel select bits and output channels Figure 3 6 Single Transfer Output Word 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Output Signa 3 digit BCD or SE 12 Bit Binary 34195 Diagnostic Word Refer to Figure 3 7 The output expander module fault bits 03 00 set to ON indicate a fault in output expander module 1 2 or3 The valid 3 9 Chapter 3 Programming channel bit 05 set to ON indicates a valid channel was addressed The power available bit 06 set to ON indicates the power available signal is present at the field wiring arm The diagnostic bit 07 is set to ON whenever there is a fault in the analog output module or output expander mo
44. g output module are used how many output expander modules are used and how many output channels of each output expander module are used These factors dictate how the output expander module programming plug positions are selected Specific instructions for making these programming plug position selections and connections are given in Chapter 2 under Conditioning Options 1771 OF and Conditioning Options 1771 E4 In summary these instructions specify the following The output channel are addressed in consecutive order beginning with the analog output module then output expander module 1 and output expander 2 There can be no gap in the order Each output expander is programming plug conditioned to correspond with an output channel When an output expander is selected you get all four channels you do not have to wire all four channels Wiring does not have to be in consecutive order You can leave a gap in the order Table 3 B demonstrates how consecutive locations in the block transfer file correspond to output channel from the conditioning and connecting 60 channel configurations Output Word The output word Figure 3 3 for the write block transfer is composed of 16 bits Bits 13 00 are BCD or binary output signals Bits 17 14 are not used set them to either 1 or O Chapter 3 Programming Table 3 B Block File Correspondence Example Block File Location Output Channel 1771 OF Channel 1 1771 OF Channel 2 1771 O
45. ge Current Channel ence ES Zero 1 Ee Zero 2 Gain EZ Zero 1 Zero 2 R16 R12 R17 R8 R7 R9 R3 R2 R4 Voltage Zero 2 Adjustment Voltage Zero 2 is adjusted at the channel s output on the field wiring arm terminal 5 Connect the high lead of the DVM to the channel s field wiring arm terminal Figure 4 5 6 Adjust Zero 2 Table 4 M until the DVM indicates 0 0000V 0 1mV Voltage Gain Adjustment Gain adjusts the upper limit of the circuit 7 Turn off the 15 volt power supply 8 Setthe plugs for the 5 volt range Refer to Table 4 L 9 Set the reset power up jumper for maximum output Table 4 K 10 Turn on the 15V DC power supply 11 Adjust gain Table 4 M until the DVM indicates 4 9976V 0 1mV 12 Turn off the 15V DC power supply Chapter 4 Calibration CURRENT MODE ADJUSTMENT Fourth you will make two different adjustments for current mode Current Zero 1 Adjustment Current Zero 1 is measured across a precision load resistor 1 Setthe plugs for current mode and the 20mA range Table 4 N 2 Connect the 250 ohm precision load resistor 0 025 Table 4 A across the selected channel swing arm terminals 3 Connect the DVM across the load resistor 4 Turnon the 15V DC power supply 5 Adjust current Zero 1 Table 4 M until the DVM indicates 4 9976V 0 1mV Table 4 N Current Mode and Range Selection Channel Current Ranges Number Mode Std Compliance Add Compliance
46. hdog Timer 035 When the write block transfer done bit is not set 120 06 set to 0 Timer 035 starts Ifthe done bit is not set to 1 within 1 second Timer 035 will time out setting Bit 035 15 to 1 If the done bit is set to 1 within 1 second the timer is reset in this example the value of 1 second was chosen The preset value will be different depending upon the application Write Flag Bit 02200 When the write watchdog timer 035 times out Bit 035 15 is set to 1 and Bit 022 00 is energized This bit indicates that the write block transfer was not completed in 1 second Read Watchdog Timer 036 When the read block transfer done bit is not set 120 07 set to 0 Timer 036 starts If the done bit is not set to 1 within 1 second Timer 036 will time out setting Bit 036 15 to 1 If the done bit is set to 1 within 1 second the timer is reset In this example the value of 1 second was chosen The preset value will be different depending upon the application Read Flag Bit 02201 When the read watchdog timer 036 times out Bit 036 15 is set 1 and Bit 022 01 is energized This bit indicates that the read block transfer was not completed in 1 second Expander Fault Bit 02205 If there is an expander fault Bit 300 17 is ON or power is not available Bit 300 16 is OFF Bit 022 05 is latched ON Display Rungs These rungs have no effect on program operation they provide a means of displaying values GET 200 through 215 and turn on alarm
47. he output expander modules it will continue to scan the other output expander module and will attempt to re establish communication with the faulted output expander module The green DC ON LED on the output expander module is ON when 5V DC backplane 15V DC and 15V DC are all present 4 Each channel is continuously updated by the analog output module with the latest information sent from the PC processor An I O reset caused by a chassis fault or the PC processor in the program mode will set the analog output module to minimum value and output expander module goes to the program plug selected value maximum or minimum 3 12 General Tools and Test Equipment Calibration Each module is carefully adjusted to provide a high degree of accuracy Calibration should be checked every 12 months to ensure maintenance of this accuracy Allen Bradley offers the following options return the module to Systems Division for calibration calibrate in your test or development installation WARNING Do not attempt calibration without reading and thoroughly understanding all steps in this procedure Also do not attempt to calibrate these modules in an operating system Table 4 A lists tools and test equipment required for calibration for both modules Table 4 A Test Equipment Equipment 5 1 2 Digit Digital Voltmeter DVM Load Resistor for Current Outputs Load Resistor for Current Output Load Resistor for Voltage O
48. hree Expanders Cont d Appendix B Single Transfer Program 31717 Y 32014 32015 32016 04 32017 0070 0071 0301 0020 ii e mm 006 000 111 120 0070 0072 0302 0020 6 al SE 007 001 222 120 0070 0073 0308 0020 6 al UE 007 002 333 130 0070 0074 0304 0020 l al SE 008 003 444 130 0070 0075 0305 0020 eH G PUT 008 004 555 140 0070 0076 0306 0020 eH G PUT 009 005 666 140 0070 0077 0307 0020 e G PUT 009 006 77 150 0070 0020 0310 0020 G 1 iG PUT 010 007 888 150 0070 02001 03811 0020 81 1 1 18 SUID 010 008 999 160 0070 0202 0312 0020 a a PUT 011 009 100 160 B 9 Appendix B Single Transfer Program Figure B 2 Application Program Single Transfer with Three Expanders Cont d Rung No 0070 0203 0313 t e al 011 010 110 0070 0204 0314 77 a Hal 002 0ti 120 0070 0205 0315 78 le a 012 012 130 0070 0206 0316 79 8 1 1 348 013 013 140 0070 0207 0317 80 8 1 1 348 013 014 150 0070 0210 0320 81 le a 014 015 160 0301 0302 0303 0304 0305 0306 0307 0310 0311 82 iat _ e 6 6 e 4 4 Hel 4 111 202 333 444 555 666 7 888 999 0312 0313 0314 0315 0316 0317 0320 0120 83 ot er ei et a e Jet Je 100 110 120 130 140 150 160 060 12007 12006 1
49. llation Conditioning Options 1771 E4 2 6 If the binary mode is selected Switch 3 of switch assembly SW 9 Figure 2 2 must be OFF Certain PC processors directly manipulate values in 3 digit BCD to perform mathematical calculations The user must construct a binary number from the BCD number This binary value is output to the module in the range of 0000 to 4095 0000 to 7777 octal Voltage or Current Range Selection There are two range selection switches for each channel which control range selection for each output on this module If the range selection switches are changed the module must be recalibrated Programming plug conditioning is required prior to inserting the output expanders into the I O chassis slots and is defined in the following paragraphs You can access to the programming plug positions Figure 2 3 by removing the module component side cover Store unused programming plugs in the storage area of the circuit board The associated analog output module is configured as Master 1 or Master 2 Each output expander module is configured to accommodate a Master 1 or Master 2 output module Each output expander module is numbered 1 through 14 and configured to correspond to that number In addition each output expander module is configured to establish what voltage or current ranges will be output and also whether the outputs will be at maximum or minimum during power up or reset CAUTION Modules must not be removed
50. log output module in the I O chassis 7 Install a field wiring arm 8 Connect the following at the field wiring arm 15 and 5 volt power supply Power available jumper 9 Connect a load resistor Table 4 A 250 ohm 1 4 watt 5 for current or 1 2K ohm for voltage Refer to Table 4 E for channel test load connections and adjustments REFERENCE VOLTAGE ADJUSTMENT Second adjust the reference voltage 1 Connect the DVM between the red and black test points at the bottom of the module Figure 4 1 2 Turn on processor industrial terminal and I O chassis power 3 Adjust R82 Figure 4 1 to 2 5000V 40 1 mV TYPICAL CHANNEL CALIBRATION PROCEDURE Third to calibrate a channel you must enter a one channel test program Figure 4 3 The analog output module could be calibrated using either block or single transfer Figure 4 3 is a single transfer program entered in a PLC 2 30 processor The same program may be entered in either a PLC or PLC 2 Family processor The only difference between the two programs will be the address and types of bits The interpretation of these bits is shown in Table 4 F It should be left in the processor to calibrate the other three channels 1 Connect the DVM across the load resistor 2 Enter a program similar to that illustrated in Figure 4 3 Channel 1 output signal value is stored in address 0301 For other channels change the GET address to reflect the memory location of the channel
51. lts 4 88 mV Bit 5 volts 1 000 7777g 4 9976 volts 2 44 mv Bit 5 volts 000 7777g 4 9988 volts 1 22 mV Bit All outputs of the analog output module must operate at the same value The module must be recalibrated when a range is changed Outputs of the output expander module may operate at different values The module does not require require recalibration when a range is changed Output Expander module only Expansion The size of an analog output system with one analog output module as master is dependent upon which programming technique is used If single transfer is used up to 16 channels may be configured one analog output module and three output expander modules If block transfer is used up to 60 channels may be configured one analog output module and 14 output expanders All output expander modules must be in the same chassis as the analog output module Operating Power Chapter 1 Introduction Output Expander Module Ranges The output expander module is totally user selectable to any of the five voltage and three current ranges Each output may be set to a different range A change may be made from one range to another without recalibration Table 1 D Output Current Ranges 3 Digit BCD Operating Mode Nominal BCD Output Output Range Code Range Voltage Range A V Bit 4 to 20mA 000 999 4 to 19 984mA 0 016 mA BIt 0 to 20mA 000 999 0 to 19 980 mA 0 020 mA BIt 20 to 20mA 000 999 20 to 19 9
52. m resistor Table 4 A across the selected channel field wiring arm terminals 4 11 Chapter 4 Calibration Figure 4 4 Programming Plug and Pot Locations Rev 04 Channel 3Adjust Channel 2 Adjust Channel 4 Adjust Cur Volt Zero 1 Volt volt Zero 1 Cur Zero 2 Cur Zero Cur Gain Zero 2ygy Zero 1 Zero 2 oit Cur Volt Zero 1 Zero 2 LE Gain Volt Zero Ze L Zero 1 poOprn n RIRRRIRRRRRIRIR HHH 2 3 45 6 7 18 19 101112 161718 118 218 318 48 518 6 8 78 88 Master 15 a 19 2 je R31 La Gain chanel 2 12 CHa 199 CH3 188 CH2 20 9 CH1 54 8 R32 La Cur Zero 1 9 9 Mode 13 3 Mode 17 Mode 21 3 Mode 252 1015 149 18 0 22 0 26 R33 a Volt Zero 2 Channel 1 27 9 30 9 33 9 36 9 39 9 R34 Cur Zero 2 f Adjust 28o SS 416 L 37 L 400 R35 La Volt Zero 1 41 45 49 53 i 42 48 2 5012 549 R36 Ue Gain 43 0 die 51 6 5515 R37 r VREF 4419 4819 5212 5619 CH4 57 o CH3 59 o CH2 61 0 CHI 63 0 Ranges5g o Rangego 9 Rangego 9 Rangega4 9 65 9 67 o 69 2 718 663 68 3 706 72 8 3 9173 CH4 8 75 C
53. nalog output module Output point capacity may be expanded from a maximum of four points without expanders to a maximum of 60 points with expanders The analog output module can function with up to 14 expanders Module specifications are provided in Chapter 1 under Specifications Output Expander Module The Analog Output Expander Assembly Cat No 1771 E4 includes the following One Analog Output Expander Cat No 1771 E4C One 12 Terminal Field Wiring Arm Cat No 1771 WB One Product Data Publication 1771 954 This section outlines ranges expansion capabilities and power requirements of the analog output module and the output expander modules Chapter 1 Introduction Analog Output Module Ranges The analog output module may be set for any one of the four voltage and three current ranges Refer to Table 1 C and Table 1 D All outputs are set to the same range If you change this range the output module requires recalibration Table 1 C Output Voltage Ranges 3 Digit BCD Operating Mode Nominal BCD Output Output Range Code Range Voltage Range A VIBit 5 volts 000 999 4 996 volts 4 mV Bit 10 volts 000 999 9 990 volts 10 mV Bit 10 volts 000 999 9 980 volts 20 mV Bit 5 volts 1 000 999 4 990 volts 10 mv Bit 5 volts 000 999 4 995 volts 5 mV Bit Binary Output Code Range 5 volts 000 7777g 4 9990 volts 0 98 mV Bit 10 volts 000 7777g 9 9976 volts 2 44 mV Bit 10 volts 000 7777g 9 9951 vo
54. nd output expander module and the diagnostic bits in the status words Table 5 A Table 5 A Troubleshooting Chart Single Transfer Green DC ON LED on output expander module is OFF The red FAULT LED flashes when the PC processor is in the program mode Switch the PC processor to run mode and the LED is ON continuously Bit 16 0 Bit 17 1 One or More Bits Oto 15 1 Bit 6 1 Bit 7 1 One or More Bits Oto2 1 Probable Cause The DC ON indicator is illuminated if chassis power 15V DC and 15V DC on the wiring arm are present Customer supplied power not present at the field wiring arm Power available jumper missing Output Expander Fault a Customer supplied power missing at the output expander b An output expander module has been removed or does not respond Recommended Action Check power supplies and wiring Correct as required Customer supplied power not present Correct as required Jumper Terminals 7 and 8 of the 1771 OF module Check for presence of power at swing arm of the output expander Correct as required Remove all output expanders from the I O chassis and cycle power If the LED does not illuminate the output module is good Insert output expander modules one at a time and cycle power until the faulted module is detected Replace as required 5 1 Chapter 5 Troubleshooting Indications Block Transfer The red FAULT LED is on continuously with the
55. nery may be damaged or economic loss can occur if procedures are not followed properly Warnings and Cautions Identify a possible trouble spot Tell what causes the trouble Give the result of improper action Tell the reader how to avoid trouble Important We recommend you frequently backup your application programs on appropriate storage medium to avoid possible data loss 1989 Allen Bradley Company Inc PLC is a registered trademark of Allen Bradley Company Inc Table of Contents Important User Information 1 Introduction eka se maman kaka aaa de kav ai 1 1 General acoso ado a ti a erba dialisi LI Applications 00 0 RII 1 5 Operating Power 1 7 Document Organization 1 1 SVEGHCAUONS ritieni fase FIRE eni 1 1 Installation ki saa ae vois vo Ye ERI kaka da wu ETE 2 1 CCC Ate e at ki ko dad E PREC a ba e 21 Rack Configurations eee ee ee eee 21 Conditioning Options 1771 OF ccc cee eee 2 3 Conditioning Options 1771 E4 re eee eee lessen 2 6 won 2 11 lero I C T 2 13 Keying the Modules 2 1 Programming carni 3 1 General EE 3 1 Operational Overview 3 2 Block Transfer Interface 3 4 Single Transfer Interface 3 8 DIAQNOSUCS Em 3 11 Calibration ciccia 4 1 General isk kid r k ak fi ak ki a pi ii pe kaa ea bk Si kn ak ka 4 1 Tools and Test Equipment 41 The Analog Output Module 4
56. nts the accumulated value at any instant When the value of GET 0070 is the same as EQU 071 1 the value in GET 0301 is transferred from Intermediate Word 0301 and PUT in the address which is the same as the Output Module Location 0020 When GET 0070 the accumulated timer value is equal to 2 the value in EQU 072 the value in Intermediate Word 0302 is transferred to PUT 0020 which is the module location NOTE Rungs 68 through 81 transfer Channels 3 through 16 respectively The transfer is based on the current accumulated timer value Rungs 67 through 80 are similar to Rung 66 and in this table are omitted for clarity Display Rungs These rungs have no effect on program operation they provide a means of displaying values in Words 0301 through 0320 GET 0120 is the value in the input image table word read by the processor Its sole function is to provide diagnostic bits for Rung 84 Diagnostic Rung The Fault Bit 120 07 Power Available Bit 120 06 and Valid Channel Address Bit 120 05 are displayed with this rung Each individually is a diagnostic bit If all bits indicate faults Bit 067 00 is latched on B 4 Appendix B Single Transfer Program Figure B 2 Application Program Single Transfer with Three Expanders R No START SIRO 07015 070 1 dr TON 0 1 PR 016 AC 004 30114 2 30115 3 S 30116 4 ED 30117 5 fi L 30214 6 30215 7 30216 8 I 3
57. o R37 r VREF 44 9 48 9 52 9 561 Ranges5g 9 Rangego s Rangego 2 Rangegg 2 65 2 67 2 69 2 71 a L 668 68 3 706 mg 8 973 CH4 3 g 74 CH3 8 75 CH2 Jumper 19 Storage 8 76 CHI Min Max Output 81 c CH1 82 o RET 83 e CH2 Expander 84 RET 77 2 85 CH 78 8 86 8 RET 79 8 87 o CH4 80 8 88 5 RET 11185 2 7 Chapter 2 Installation Figure 2 3 Programming Plug and Pot Locations Rev 04 Continued rlo lo Ste milo l j 0 Ho o O a o O dk 8 o z 8 LIG Master LT e IO 7 Q Q Me ou O ca Bjo cho o chi Z O 1 16 4 zo tr 6 Mode SEO sO V RES Mode AO Mode 70 ode ai Mode A O LO IO MEE LO 2 SA AS elo glo O o rate 2 o so o en ai ef gf af s Elle 46O O al jo 8L Oo S MES 4 o 816 82 10 O CH4 Oo CHE _ G os 56 CH Le 7 63 Range X 3 Range E e Range GP Range ei e cO o SIT 4 o 815 G lle amp o lo 6 G elle DO 213 TP1 CHi lol Tol TP2 CH2 O O CH4 TP3 CH3 O TP4 CH4 O S 4 CHS TP5 VREF O 31715 cHe Ja CH1 Storage Min Max Output 8i DE H 1 O RET e ICH 84 O RET Expander ADDR E CH 86 a OIRET e bud o 3 CH4 a 8 OIR ET co a f 2 8 Chapter 2 Installation Table 2 B Master Selection 9 10 27 28 Master
58. processor and I O chassis power 2 Remove the analog output module from the I O chassis 3 Remove the four screws and the component side cover 4 Setthe module function Switch SW 9 Figure 4 2 and Table 4 B as follows Switch 1 OFF stand alone Switch 2 ON single transfer or OFF block transfer Switch 3 ON BCD or OFF binary The analog output module must be calibrated in the same mode that will be used This example uses BCD Switch 4 OFF standalone module Chapter 4 Calibration 5 There are two range selection switches for each channel Figure 4 1 Switches SW 7 and 8 select Channel 1 Switches SW 5 and 6 select Channel 2 Switches SW 3 and 4 select Channel 3 Switches SW 1 and 2 select Channel 4 Set these switches according to Table 4 C and Table 4 D Figure 4 1 Switch and Pot Locations Range Selection Switches SW 1 R50 I mm Channel 4 SW 2 Gain R51 S R58 SW 3 ll Offset l Channel 3 SW 4 l Gain R59 R64 SW 5 Gain Channel 2 SW 6 Offset R66 R73 di d ain SM Channel 1 Offset SW 8 R75 Module Function R Switch Assembly R82 Reference Voltage BK SW 9 11183 4 3 Chapter 4 Calibration 4 4 6 Install the ana
59. s odule Group 0 4 U 0301 0020 5 Rung Condition ei PUT Channel 1 value is stored in Word 0301 Channel Select Bits 14 15 16 17 are set to 0 to Select Channel 1 Rung 5 enabled to transfer Channel 1 to 1771 OF Series B Table 4 E Channel Test Load Connections Terminals Offset Pots 1 1and3 R75 R73 2 2 and 3 R66 R64 3 4 and 6 R58 R59 4 5 and 6 R50 R51 Table 4 F Output Instructions PLC PLC 2 Family 4 7 Chapter 4 Calibration 4 8 Table 4 G Channel Select Code Output Channel 1771 OF Channel 1 1771 OF Channel 2 1771 OF Channel 3 1771 OF Channel 4 1771 E4 Channel Expander Number Number 0 1 0 0 1 1 0 1 0 1 1 2 0 1 1 0 1 3 0 1 1 1 1 4 1 0 0 0 2 1 1 0 0 1 2 2 1 0 1 0 2 3 1 1 1 2 4 1 1 0 0 3 1 1 1 0 1 3 2 1 1 1 0 3 3 1 1 1 1 3 4 On Line Data Change Change the value in the GET Use an On Line Data Change Search 51 for both PLC and PLC 2 15 Family processors The only difference is the message displayed on the CRT Refer to the programming and operations manual of your processor for details 3 Press SEARCH 51 The message ON LINE DATA CHANGE appears near the bottom of the CRT screen 4 Move the cursor to the GET Chapter 4 Calibration 5 Enter 000 This number will be displayed after the ON LINE DATA CHANGE message If any entry mistake is made the correct value may be entered at this time 6 Press INSERT The new data is written into the GET Of
60. tatus am em Ez PC Processor User Analog Devices ea To fo Analog Output Module cat no 1771 OF Series B Figure 3 2 Analog Output Module with an Expander I l 5 loj d 6 lof L Output Data Output Values Output offrnonn cba ba Value Expander Status D a Storage Analog Output System Status an an L an em PC Processor i User i Analog Devices i em em de ES Analog Output Module Analog Output Expander Module cat no 1771 OF Series B 11187 cat no 1771 E4 User Analog Devices 11188 3 3 Chapter 3 Programming Block Transfer Interface 34 This is a bi directional block transfer module Sixty output words are transferred during a write block transfer However only one word is transferred during each read block transfer If you are unfamiliar with the programming techniques of read and write block transfers read the explanations in the programming and operations manual for the specific PC processor which you are using Write Block Transfer File Output words are stored in a block file of data table word locations in the PC processor s memory Each word location in the block file corresponds to a specific output expander or analog output module channel The configuration of that correspondence is determined by how many channels of the analo
61. ter 2 Rack Configurations physical installation can begin It consists of selecting the options described in Chapter 2 Conditioning Options 1771 OF and Conditioning Options 1771 E4 inserting the modules into their I O chassis slots and making connections to the modules field wiring arms as per Chapter 2 Connections and then when the rack configuration is firm keying the module slots as specified in Chapter 2 Keying the Modules It is recommended that Chapter 2 be read through before beginning work and that all option selections and connections be double checked against Chapter 2 before programming and start up testing begin Module grouping limitations are as follows output expander modules must be housed in the I O chassis with the associated analog output module Avoid placing either module close to AC or high voltage DC modules Although it is possible to place the module into any I O module group location considerations of noise immunity and power cable lengths should be kept in mind Noise can be minimized by grouping analog input and output modules together within an I O chassis and by not placing high voltage discrete I O modules into adjacent module slot locations The analog output module requires two adjacent slots in the I O chassis and the slots used must be of the same group It cannot straddle two groups The output expander requires one slot 2 1 Chapter 2 Installation 2 2 The analog output mod
62. to be calibrated Chapter 4 Calibration Channel 2 0302 Channel 3 0303 Channel 4 0304 The output channel is designated by setting Bits 17 14 of the the output signal value word Bits 17 14 are a 4 bit binary code which identifies the channel number Table 4 G The bits are actually set in the intermediate words Figure 4 2 Module Function Switch Assembly SW 9 No 2 ON Single Transfer OFF Block Transfer ON ON OFF No 1 d _ No 4 ON Master 2 ON Expander OFF Master 1 OFF Stand alone or Stand alone No 3 ON BCD OFF Binary 11184 Table 4 B Stand Alone Master Stand Alone OFF OFF Master 1 OFF ON Master 2 ON ON Chapter 4 Calibration Table 4 C Settings for Odd Numbered Range Selection Switches Position Table 4 D Settings for Even Numbered Range Selection Switches Position me FTT 0 5V OFF OFF OFF ON OFF OFF 10 0V OFF OFF ON OFF ON ON OFF OFF 0 10V OFF OFF ON OFF ON ON OFF OFF 1 5V ON OFF OFF OFF ON ON OFF ON 4 20 MA ON OFF OFF ON OFF OFF ON ON 0 20 mA OFF OFF ON ON OFF OFF ON OFF 20 mA OFF OFF ON ON OFF OFF ON OFF 4 6 Chapter 4 Calibration Figure 4 3 General Example of Channel Select Bits Rung No 30114 u 30115 2 U 30116 3 U 1771 OF Series B is located in Rack 2 Modul apti
63. ule care should be taken so that other types of modules will not be mistakenly inserted into these slots Plastic keying bands shipped with each I O chassis provide an easy method to key an I O chassis slot to accept only one type of module Use of these keying bands is strongly recommended Each I O module is slotted at its rear edge The position of keying bands on the backplane connectors must correspond to these slots to allow insertion of the module Chapter 2 Installation For the analog output module position the keying bands on the upper backplane connectors between these numbers printed on the backplane Left Backplane Connector Between 2 and 4 Between 6 and 8 Right Backplane Connector Between 4 and 6 Between 32 and 34 For the output expander module position the keying bands on the upper backplane connectors between these numbers printed on the backplane Between 8 and 10 Between 28 and 30 Programming General This chapter provides information required to program a PC processor to interface with an analog output module with or without output expander modules Appendices A and B supply sample application programs Depending upon the PC processor being used two methods of interface are available block transfer and single transfer Table 3 A identifies which processors may be used with block transfer and which may be used with single transfer local and remote configuration Table 3 A Processor
64. ule can be conditioned to function as master or standalone When the analog output module is expanded using associated output expander modules it must be conditioned as a master A master is here defined as an intelligent I O module that communicates with associated output expander modules via the backplane When non expanded the analog output module is conditioned as a standalone No more than two master output modules may reside in one I O chassis Also the number of master and standalone output modules that can be used in a given I O chassis is restricted by the presence of certain other intelligent I O modules in the same I O chassis The Stepper Positioning Assembly Module Cat No 1771 QA the Servo Positioning Assembly Module Cat No 1771 QC and the Thermocouple Input Module cat no 1771 IX are always masters The Analog Input Module Cat No 1771 IF may be a master or a standalone The restrictions exist on an I O chassis basis The restrictions do not place limits on the number of modules in an I O system NON EXPANDED The number of standalone analog output modules per I O chassis is limited only to the number of slot pairs available provided there are no stepper positioning assembly servo positioning assembly analog input module or thermocouple input module masters Upto four stand alone analog output modules can be used with one master analog input module master analog output module or thermocouple input mo
65. ut Current in the Voltage Mode e 10 mA in Voltage Mode Max Output Resistance in the Current Mode e Up to 600 Ohms Load Resistance Ambient Temperature Rating e Operational 0 C to 60 C 32 F to 140 F e Storage 40 C to 85 C 40 F to 185 F Humidity Rating e 5 to 95 without Condensation Electrical Optical Isolation e 1500V RMS Transient e Isolation between the Output Circuit and the Control Logic Keying e Left Connector 2 and 4 6 and 8 e Right Connector 4 and 6 32 and 34 D A Converter Is Monotonic Accuracy Absolute Accuracy Including Linearity Gain and Offset at 259C e 10 196 of Full Scale e 1 2 LSD BCD Mode e 1 2 LSB BINARY Mode Temperature Coefficient e 45 ppm C of Full Scale Range 1 11 Outputs per Module e 4 Single Ended Module Location e Bulletin 1771 I O Chasis One Slot Output Voltage Ranges Nominal e 1t0 5V DC e Oto 45V DC e 10to 10V DC e Oto 10V DC e 5t0 5V DC Output Current Ranges Nominal e 4to 20 mA e 010420 mA e 2010 420 mA Digital Resolution 1 e 3 Digit BCD or 12 Bit Binary BCD Input from Processor 1 e 000 to 999 for Any Output Range Binary Input from Processor 1 e 0000 to 77773 for Any Output Range BackPlane Power e 165mA Output Overload Protection e All outputs are protected against short circuit load conditions not to exceed one minuite D A Converter Specifications Setting Time e 1msec T
66. utput Load Resistor for Voltage Outputs Sealant Description 0 0196 Accuracy minimum A Keithley 191 Fluke 8300A or equivalent 250 ohms 1 4 watt 0 02596 Allen Bradley Systems Part No 610996 01 250 ohm 1 4 watt 5 Carbon Composition Resistor 1000 ohms 1 4 watts 596 Metal Film Resistor 1 2K ohms 1 4 watt 5 or 1096 Carbon Composition Resistor Organic Products P O Box 428 Irving Texas 75060 Torque Seal 4 1 Chapter 4 Calibration The Analog Output Module 4 2 Alignment Tool Pot Tweeker Newark Electronics 500 North Pulaski Road Chicago IL 60624 Part No 35616 Program Panel Optional Industrial Terminal System Extender Board Optional Allen Bradley Cat No 1771 EX You must calibrate the analog output module in an I O chassis The module needs to communicate with the processor and industrial terminal You will perform two general steps Then you will calibrate a typical channel i e Channel 1 Prepare the analog output module for calibration Adjust the reference voltage Calibrate a typical channel PREPARATION First prepare the module by setting the module function and range selection switches Figure 4 1 These switches determine the mode of data transfer and voltage or current output range The module must be calibrated in the range in which it will be applied If the range switches are changed the analog output module must be recalibrated 1 Turn off the
67. ypical for a Resistive Load 1 Switch selected at the output mode Output Impedance e 0 25 ohms for Voltage Outputs Exclusive of Contact Wiring Resistance e 1 5 megohms for Current Outputs Max Output Current 2 e 10 mA for Voltage Mode Max Output Resistance e Up to 600 Ohms Load Resistance Ambient Temperature Rating Operational 0 C to 60 C 32 F to 140 F e Storage 40 C to 85 C 40 F to 185 F Humidity Rating e 5 to 95 without Condensation Electrical Optical Isolation e 1500V RMS Transient e Isolation between the Output Circuit and the Control Logic Keying e 8and 10 28 and 30 D A Converter Is Monotonic Accuracy Absolute Accuracy Including Linearity Gain and Offset at 25 C e 0 1 of Full Scale e 1 2 LSD BCD Mode e 1 2 LSB BINARY Mode Temperature Coefficient e 55 ppm C of Full Scale Range 2 If an individual output is referenced to the 15V DC return additional compliance is obtained Maximum load resistance is extended to 1100 ohms General Rack Configurations Installation WARNING Disconnect and lockout all PC processor and I O chassis power before installing and wiring modules to avoid injury to personnel and damage to equipment After a configuration of analog output modules or analog output and output expander modules has been planned in accordance with the capabilities defined in Chapter 1 and within the guidelines described in Chap

1771-6.5.3, Analog Output System User Manual

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