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1771-6.5.2, Analog Input System User Manual

1. Figure 2 7 Analog Input Expanders Input Connections Chassis 1771 1 Ground 77 Belden 8761 Cables 1771 E2 Fine 3c Common Belden 8761 Cable N Analog N H 18 Channel 1 L T 18 Source 18 Channel 1 Lead NS 17 Channel 2 Analog S 17 Channel 1 Lead Mind S uM 16 Common c ER omy 16 Channel 2 Lead 7 wQ 15 Channel 3 7 nO 15 Channel 2 Lead Floating QC 14 Channel 4 Cc 14 Channel 3 Lead a 13 Common Floating a 13 Channel 3 Lead uc f 12 Channel 5 Quc 12 Channel 4 Lead Sue 11 Channel 6 Re 11 Channel 4 Lead Q 10 Common TO 10 Channel 5 Lead Quc 9 Channel 7 Qua 9 Channel 5 Lead 9Q T 8 Channel 8 s LV 8 Channel 6 Lead SAI 7 Common O 7 Channel 6 Lead Ord 6 Analog Out Ord 6 Analog Out zQ 5 Common zQ A G Oc 4 15V DC Oi 4 Figure 2 6 3 15V DC Figure 2 6 3 15V DC H 2 15V DC Common H 2 15V DC Common 1 Not Used 1 Not Used H H NOTES g 1 When all six channels are not used the channels used E S must be consecutive beginning with channel 1 i v 2 Analog signals must be within the 10V common mode NOTES voltage range which is referenced to the analog system common 1 When all eight inputs are not used the channels used must be consecutive beginning with cha
2. Figure E 1 Hardware Configuration 64 Channels 64 Analog Input Channels Module Expander 1 Analog Cables CH1 1 Backplane CH 1 CH2 S is CH3 3 CH4 4 To PLC CH5 5 Processor CH6 6 CH7 _ 7 CH8 B Expander 2 Expander 3 CH3 1 8 Expander 4 Expander 5 CH5 1 8 Expander 6 CH 6 18 Expander 7 CH7 1 8 Expander 8 10496 E 3 Appendix E Application Program Single Transfer with Expanders Sample Program E 4 The following paragraphs define each of the rungs in the sample program shown in Figure E 2 Rung 1 Data Valid Bit 11417 20110 Bit 20100 is a storage bit for Data Valid Bit 11417 The storage bit is necessary in order to maintain the state of Bit 11417 throughout the program Rung 2 Diagnostic Bit 11416 20005 Bit 20005 is a storage bit for Diagnostic Bit 11416 The storage bit is necessary in order to maintain the state of Bit 11416 throughout the program Rungs 3 10 Expander Fault Bits 22000 22007 When Expander 1 01410 is faulted Storage Bit 22000 will be latched ON When Expander 2 is faulted Storage Bit 22001 will be latched ON etc The user should reset the storage bit to zero after the fault is corrected Rungs 11 13 Initialization 230 232 014 These rungs are true for one scan following power up and duri
3. Chapter 1 Introduction Table 1 B Input Voltage Ranges 1771 IF 5V DC 10V DC 10V DC 5V DC Nominal Voltage Range 5V DC 10V DC 10V DC 5V DC 3 Digit BCD Operating Mode Nominal Voltage Corresponding Range Actual Range BCD Output Range A VIBit 4 996V DC 9 990V DC 9 980V DC 4 995V DC Actual Range 4 99902V DC 9 99756V DC 9 99512V DC 4 99878V DC 000 999 000 999 000 999 000 999 12 Bit Binary Operating Mode Corresponding BCD Output Range 0000 7777 0000 77778 0000 7777 0000 7777 4 mV Bit 10 mV Bit 20 mV Bit 5 mV Bit A VIBit 0 98 mV Bit 2 44 mV Bit 4 88 mV Bit 1 22 mV Bit NOTE The input voltage range is selectable for all eight channels as a unit thus all channels function with the same input voltage range Table 1 C Input Current Ranges 1771 IF Nominal Voltage Corresponding Range Actual Range BCD Output Range 3 Digit BCD Operating Mode 4 to 20mA 4 to 219 984 mA 0 to 20mA 0 to 19 980 mA 20 to 20mA 20 to 19 960 mA 000 999 000 999 000 999 A I Bit 0 016 mA Bit 00 02 mA Bit 00 04 mA Bit 12 Bit Binary Operating Mode Nominal Voltage Range Actual Range 4 to 20mA 4 to 19 9961mA 0 to 20mA 0 to 19 9951mA 20 to 20mA 20 to 19 9902mA Corresponding BCD Output Range 0000 7777 0000 77778 0000 7777 A I Bit 0 0039 mA Bit 0 0048 mA Bit 0 0098 mA Bit NOTE The input current range is selec
4. Less Than Eight Expanders E 14 Rungs 113 120 Channel Select Unlatch 01400 01407 When Storage Bit 20112 is ON i e when data is valid or diagnostic bit is ON indicating a fault all channels will be unlatched Rung 121 Channel Counter Reset 230 When Diagnostic Bit 20005 is ON and the data valid bit is OFF or Channel Counter Done Bit 230015 is ON and the data valid bit is OFF the channel counter will reset Rung 122 Expander Counter Reset 232 When Valid Data Bit 20110 is OFF and Expander Counter Done Bit 23215 is ON expander counter 232 will reset Rung 123 Initialization Bit 20117 Storage Bit 20117 is OFF for one scan only Bit 20117 is used as a condition in the initialization rungs 11 13 Rungs 124 125 Channel Counter Flag Bit 22600 If Channel Counter Done Bit 03015 does not energize before Timer 040 times out preset should be determined by user according to system configuration Bit 22600 will be latched ON This will indicate that communication between the processor and Analog Input Module or Modules has ceased Rungs 126 133 Display Only 22500 22507 These rungs have no effect on program operation They provide a means of displaying the final valid analog values When less than eight Expanders are used in the hardware configuration the program in Figure E 2 must be modified to account for the difference in configuration In essence this consists of removing all rungs that Appendix E Applic
5. 0 2 0 0 1 3 0 1 0 4 0 1 1 BEN 6 1 0 1 7 1 1 0 8 1 1 1 Channel Selection Each 1771 E1 has eight inputs and each 1771 E2 or 1771 E3 has six inputs All inputs of a module need not necessarily be used Refer to Figure 2 4 and insert programming plugs into CHANNEL C2 C1 and CO positions for each Expander Module Each of three plugs is inserted one each under C2 C1 or CO in either the 0 position or 1 position in accordance with the number of inputs to be used on that Expander Module and Table 2 C Table 2 C Channel Select Number of Programming Plug Position Channels C2 C1 CU U 1 1 1 1 Defaults to six for 1771 E2 or 1771 E3 2 9 Chapter 2 Installation 2 10 Output Range Selection For each Expander Module select the output voltage range that matches the input voltage range for which the associated Analog Input Module is conditioned and calibrated If the Analog Input Module is conditioned for the 4 to 20 mA or 0 to 20 mA input range it can be conditioned for the corresponding voltage input range 1 to 5V DC or 0 to 5V DC respectively in accordance with Voltage Current Switch SW 2 Figure 2 1 and Range Selection Switch SW 3 Figure 2 1 If the Analog Input Module is conditioned for the 20 mA input range however it will need to be conditioned for one of the four voltage ranges in accordance with Voltage Current Switch SW 2 Figure 2 1 and Range Selection Switch SW 3
6. Figure 3 1 23 Channel Configuration fut Mle Module 1771 E1 1771 IF Series B 5 Inputs PEFR EET Backplane Bus to PC Processor Expander Module 1771 E2 PEE TTT Expander Module 1771 E3 dii 10467 8 Inputs 6 Inputs 4 Inputs Fr Not Used 3 3 Chapter 3 Programming Block Transfer Interface 3 4 The following three sections describe two general block transfer formats and define the data table file into which the value words are transferred Block Transfer BLOCK X FER Figure 3 2 shows a general method of programming a PC processor for block transfer This is the general format used with Mini PLC 2 15 and PLC 2 30 Processors when programming with a 1770 T3 Industrial Terminal Figure 3 2 General Block Transfer Program Block XFer 013 L BLOCK TRANSFER READ LA ENT DATAADDR na ud MODULE ADDR 130 DN BLOCK LENGTH o Y FILE 070 10468 When the user depresses the BLOCK X FER key on the Industrial Terminal the rung block shown in Figure 3 2 is displayed The user then depresses either the 1 key or 0 key on the keypad to select either block transfer read or block transfer write respectively Block transfer read is required to service the Analog Input Module The user then enters the four values inside the rung block through the keypad Example values 040 130 08 and 070 are shown in Figure 3 2 NOTE Bit Number 7 Bit 01307 in this example is also r
7. Output Gain Adjustment 23 Remove programming plugs from E1 Positions A C D E and F 24 Insert programming plugs into El Positions G and J 25 Apply 10 0000V 40 1 mV to Channel 1 input 26 Adjust R10 for 5 0000V 0 1 mV on output Terminal 6 27 Remove programming plug from E1 Position J 28 Insert programming plugs into E1 Positions H and I 29 Apply 10 0000V 0 1 mV to Channel 1 input 30 Adjust R11 for 5 0000V 40 1 mV on output Terminal 6 31 Insert programming plugs into El Positions K and L 32 Apply 10 0000V 0 1 mV to Channel 1 input 33 Adjust R12 for 1 0000V 0 1 mV on output Terminal 6 34 Apply 10 0000V 40 1 mV to Channel 1 input 35 Adjust R13 for 5 0000V 0 1 mV on output Terminal 6 Repeat Steps 32 through 35 one time if necessary 36 Remove 10 0000V 0 1 mV from Channel 1 input Current Range Adjustment Insert programming plugs into E4 Positions S1 through S8 Figure 5 3 Remove all plugs from El input output range and insert program plug into El Position F Connect a test setup as shown in Figure 5 4 to the selected channel input for each of the following steps and adjust so that V1 V2 5 11 Chapter 5 Calibration Figure 5 4 Current Range Adjustment V2 Expander Module 250 W fs 20 mA Input 10 W Source 2 npu l 245 W Anal nalog Output T 1771 E1 Input Ground 1771 E2 Input Terminal Vi 1771
8. 000 007 000 000 040 047 Channel 4 Select 01203 F L GrH L 000 007 06 2 00 11217 11216 040 061 112 Channel 4 Transfer 053 H eH Ha PUT 000 009 000 000 D 3 Appendix D Application Programs Single Transfer without Expanders Figure D 2 Sample Program Single Transfer Continuous Update 8 Channels PLC 2 Continued Rung No 040 061 Channel 5 Select 01204 11 GH 000 009 062 E 010 11217 11216 040 063 112 Channel 5 Transfer 054 12 l a H G PUT 000 0 000 000 040 063 Channel 6 Select 01 205 13 LG L 000 011 064 Ee es 012 11217 11216 040 065 112 Channel 6 Transfer 055 14 l dG s a PUT 000 013 000 000 040 065 Channel 7 Select 01206 15 KISE 000 013 066 Spale 014 11217 11216 040 067 112 Channel 7 Transfer 056 16 Mia teia PUT 000 015 000 000 040 067 Channel 8 Select 01207 17 GHA 000 015 070 uz 016 11217 11216 040 071 112 Channel 8 Transfer 057 18 1 H e HH l G PUT 000 017 000 000 04015 Scan Counter Reset 040 19 CTR PR 017 Display Only AC 000 050 051 052 053 054 056 057 20 G G 6 4 14 G 16G END 0245 000 000 000 000 000 000 000 D 4 Immediate Update Appendix D Application Programs Single Transfer without Expanders Even Rungs 6 18 Channels 2 8 Transfer 051 057 Same as Rung 4 except apply to Channels 2 through 8 Rung 19 Scan Counter Reset 050
9. On current Range Selection Switch Assembly Va aud Switch Assembly 10475 54 Chapter 5 Calibration Set SW 1 Position 1 to OFF Set SW 1 Position 2 to ON for BCD or OFF for binary whichever mode is to be used in user s application Set SW 1 Position 3 to OFF single transfer Set SW 1 Position 4 to OFF standalone Set SW 1 Position 5 to ON calibration if calibrating for the 1 to 5V DC or 4 to 20 mA range Set SW 2 all positions to OFF Set SW 3 positions to specify range to be calibrated Table 5 A For 4 to 20 mA range use 1 to 5V range For 0 to 20 mA range use 0 to 5V range Turn on power to programmable controller and I O racks Allow 15 minutes warm up Select Channel 1 input NOTE Skip Steps 10 and 11 if calibration is for other than 1 to 5V or 4 to 20 mA ranges Table 5 A Voltage Current Ranges Switch SW 3 Position S aL ON ON OFF ON OFF ON OFF OFF ON ON OFF ON OFF ON OFF OFF OFF OFF ON OFF ON ON OFF OFF OFF OFF ON ON OFF ON OFF OFF OFF OFF ON ON OFF ON OFF ON OFF OFF ON ON OFF ON OFF ON 10V DC ON ON OFF OFF ON OFF ON OFF ON OFF 5 5 Chapter 5 Calibration 5 6 10 Apply 1 0000V 40 1 mV to Channel 1 input terminals on field wiring arm apply between input and corresponding common 11 Adjust R6 for 0 0000V 0 1 mV across testpoints R
10. Allen Bradley Analog jum User Manual Cat Nos 1771 IF Series B and 1771 E1 E2 E3 Table of Contents Introduction lle nn n n nn 1 1 DeschptiON SX KR ed R 0 ad X 5 0 X R N RR rarr ex ce pde 1 1 Application sos E R a d Z X Reed RES RN ete 1 4 Overview of Manual 0 cece m RKIwywe 1 7 Installation 0 cee ee eee 2 1 General 22s dors Pius iW edad a ow imc Pe Sa eds 2 1 Rack Configurations n o nananana anaana 2 1 Conditioning Options 1771 IF n n anaana anaana annan 2 2 Conditioning Options 1771 E1 E2 and E3 2 5 Connections 00 0 eee eee RR IRI 2 15 Indicators and Fuses 0c cece cece m aes 2 18 K YING fan educ eR e cee Reed Dx RI RH 2 19 Programming x x x s s e K x ran Rh narro nn 3 1 Generals ahead eS ee hte eae oa oa ee cae eaten s eM 3 1 Operational Overview llli lessen 3 2 Block Transfer Interface 00 00 eee eee eee eae 3 4 Single Transfer Interface 00 c cee eee eens 3 10 Value Word xp p EU appe p E REUS 3 13 StatusBits cecce ted eee eens 3 13 DIAQNOSUCS 23 Acc dere pes oed saa dae hia ees 3 14 Troubleshooting K K K K een eee 4 1 General A Mie kee RE hee ae EUS ee ee oe 4 1 Calibration uie aca saca bx e ERROR CERO EC RO CR ER Ca Rd 5 1 Getieral meos dette Oe tbe ties auteni ee ARN N 5 1 Recommended Test Equipment 00 00 eee
11. Introduction Ambient Temperature Ratings e Operational 0 C to 60 C 32 F to 140 F e Storage 40 C to 85 C 40 F to 185 F Relative Humidity Rating e 5 to 95 without Condensation Electrical Isolation e 1 500V RMS Transient e Isolation is achieved by optoelectronic coupling between the input circuit and the control logic Keying e 8 10 and 24 26 Output to 1771 IF Series B e ito 5V DC e Oto 10V DC e 10V DC e Oto BV DC Ambient Temperature Ratings e Operational 0 C to 60 C 32 F to 140 F e Storage 40 C to 85 C 40 F to 185 F Relative Humidity Rating e 5 to 95 without Condensation Electrical Isolation e 1 500V RMS Transient e Isolation is achieved by optoelectronic coupling between the input circuit and the control logic Keying e 24and 12 14 One Output Range to 1771 IF Series B e dto 5V DC e 0to 10V DC e 40V DC s Oto 45V DC 1 11 Chapter 1 Introduction Table 1 H Specifications 1771 E3 Inputs per Module Ambient Temperature Ratings e Six Two Wire Sourcing Supplies Signal Voltage e Operational 0 C to 60 C 32 F to 1409F e Storage 40 C to 85 C 40 F to 185 F Module Location e 1771 I O Rack Relative Humidity Rating e 5 to 95 Non Condensing Input Ranges s 44to 20 mA and 0 to 20 mA Electrical Isolation e 1 500V RMS Transient Accuracy e Isolation is achieved by optoelectronic coupling between e 0 07 Perce
12. Rung 5 Watchdog Timer 230 Block Transfer Enable Bit 01407 when ON starts Timer 230 Timer 230 has a preset of 100 ms If the block transfer done bit 11407 does not come on within 100 ms Bit 02600 will be latched ON Rung 7 The preset value will be different depending on the application user should select preset value according to system design Appendix C Application Program Block Transfer with Expanders Figure C 2 Sample Program Block Transfer 22 Channels LADDER DIAGRAM DUMP START Hung No M Expander Fault Bits 025 1 L 16 ON 00 310 025 2 L 16 ON 01 316 025 3 il L 16 Block Transfer ON 02 014 BLOCK XFER READ Data Address 030 E po Module Address 140 114 Block Length 22 DN File 300 325 07 014 Watchdog Timer 230 TON 07 01 PR 010 AC 000 114 Timer Reset 230 6 CTR 07 PR 010 AC 000 230 Flag Bit 026 7 f L 15 File to File Move DED 8 pa a cae FILE TO FILE MOVE EN 1 07 16 17 Counter Address 031 17 Position 008 File Length 008 031 l File A 300 307 DN J File R 400 407 15 Rate per Scan 008 File to File Move 9 i E m FILE TO FILE MOVE ris 07 16 17 Counter Address 032 17 Position 006 File Length 006 032 v File A 310 315 DN File R 410 415 15 Rate per Scan 006 File to File Move is M WE j FILE TO FILE MOVE ab 07 16 17 Counter Address 033 17 Position
13. and 13 and adjust R28 5 Select Channel 4 input Terminals 12 and 11 and adjust R27 52 Select Channel 5 input Terminals 10 and 9 and adjust R19 53 Select Channel 6 input Terminals 8 and 7 and adjust R17 54 Seal potentiometers with sealant 55 Turn off power to programmable controller and I O racks 56 Disconnect test equipment 57 Remove extender board 58 Set DIP switches Chapter 2 under Conditioning Options 1771 IF and programming plugs Chapter 2 under Conditioning Options 1771 El E2 and E3 as required for normal operation 59 Insert module into its I O rack slot 5 18 Chapter 5 Calibration 60 Restore power and user program 61 Turn off power and reconnect all field wiring arms to I O modules Calibration Procedure 1771 E3 To avoid any unwanted machine motion you should WARNING Do not attempt calibration without first reading and thoroughly understanding General Recommended Test Equipment Channel Selection and all steps in this procedure 1 Turn off power to programmable controller and I O racks 2 Disconnect all field wiring arms from I O modules and restore power 3 Make a copy of the user program 4 Erase user program from programmable controller memory and turn off power Refer to Figure 5 6 for Testpoint Locations Programming Plug Positions Adjustment Potentiometer Locations and Test Setup Remove the compo
14. 000 093 20101 01404 114 414 60 j F4 ae PUT 000 093 20101 01405 114 415 61 J Ea aea PUT 000 093 20101 01406 114 416 62 J EA 6l PUT 000 093 20101 01407 114 417 63 Ha PUT 34 000 093 20102 01400 114 420 64 a PUT 000 844 20102 01401 114 421 65 Hae PUT 000 844 20102 01402 114 422 66 Ha PUT 20102 01403 114 423 67 H bae PUT 000 844 20102 01404 114 424 68 L4 aea PUT 000 844 20102 01405 114 425 69 Tee PUT 4 000 844 20102 01406 114 426 70 E Pal PUT 1 000 844 20102 01407 114 427 71 a PUT 000 844 20103 01400 114 430 72 j H Hae PUT 000 657 20103 01401 114 431 73 L8 PUT 000 d E 9 Appendix E Application Program Single Transfer with Expanders E 10 Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No 20103 01402 114 432 74 T Efe PUT 000 657 20103 01403 114 433 75 d Ha PUT 000 657 20103 01404 114 434 76 Fel PUT 000 657 20103 01405 114 435 77 ae PUT 000 657 20103 01406 114 436 78 ppt Ha PUT 000 657 20103 01407 114 j 437 79 d Haea PUT 000 657 20104 01400 114 440 80 a PUT 000 468 20104 01401 114 441 81 G PUT 000 468 20104 01402 114 442 82 ae PUT 00
15. 003 File Length 003 033 File A 316 320 DN File R 416 420 15 Rate per Scan 003 C 3 Appendix C Application Program Block Transfer with Expanders Figure C 2 Sample Program Block Transfer 22 Channels Continued Rung No 114 321 321 L JSS r FILEETO FILE MOVE 1 ee Counter Address 034 Position 005 File Length 005 File A 321 325 File R 421 425 Display ony Rate per Scan 005 400 401 402 403 404 405 406 407 020 12 Ga G 6 GJ al allal 563 563 563 563 563 563 563 563 01 411 42 413 414 415 020 13 6 L6I L 6 1 6 1 ql qh 4 093 093 093 093 093 093 02 417 420 020 14 iaia 4 844 844 844 03 4291 422 423 424 425 020 15 HaoHan 4 657 469 375 281 375 04 END 00479 Rung 6 Timer Reset 230 When block transfer done bit is ON Timer 230 is reset Rung 7 Flag Bit 02600 If Timer 230 Done Bit 23015 is ON Bit 02600 is latched ON This latched ON bit will alert the user that block transfer has not occurred or took longer than 100 ms to complete The preset value of 100 ms is application dependent Rung 8 File to File Move 031 This rung transfers valid analog data from Expander block transfer file words 300 307 to final storage words 400 407 The file to file move instruction is preconditioned with Bit 11407 BT done bit Bit 30016 C4 Appendix C Application Program Block Transfe
16. Appendix A Installation Practices 5 Connect the insulated wires at the Wiring Arm terminals 6 Once the Wiring Arm connection of both insulated wires is made fold back the shielded strand and route it to connection at the nearest convenient ground The recommended ground connection is at a mounting bolt of the I O rack Figure A 5 shows the routing of the shield to this bolt Note that the shield is carefully routed so as not to touch any terminal or make contact with other wiring Figure A 5 Shielded Cable Connection Ground Shield at I O Chassis Mounting Bolt Shield and Drain Twisted into Single Strand i Field Wiring Arm Belden No 8761 or Equivalent Wire Cable 17798 Where necessary insulate all or part of the shield to prevent contact between the shield and other terminals Shrink tubing or electrical tape can be wrapped around the shield for this purpose Connection of the shielded cable at the controller end is now complete A 6 Appendix A Installation Practices 7 At the user device cut the cable s shield and bare stranded wire short Tape the shield back to prevent contact with any other wiring or with any terminals NOTE Do not confuse the shield with the signal return wire which is the formal term for one of the insulated wires of the twisted pair A 7 General Overview Appendix Application Program Block Transfer without Expanders This appendix provides
17. General Overview Appendix Application Program Single Transfer with Expanders This appendix provides a single transfer application program for programming a PC processor to access an Analog Input Module that has associated Expander Modules The sample program below is designed to accommodate the full complement 64 channel hardware configuration shown in Figure E 1 This configuration uses a full complement of eight 1771 E1 Expanders each using a full complement of eight input channels The section titled Less than Eight Expanders gives instructions for modifying the full complement program to accommodate a hardware configuration that uses less than eight Expanders The section titled Less than Eight Expander Channels gives instructions for modifying the full complement program modified or not in accordance with Less than Eight Expanders to accommodate a hardware configuration that uses less than eight inputs on each of one or more Expanders The program provided in Sample Program and modified in accordance with Less than Eight Expanders and Less than Eight Expander Channels to correspond to the user s hardware configuration will implement single transfer interface correctly provided the configuration has been programming plug conditioned and connected correctly in accordance with Chapter 2 of this manual Overview provides an overview of the principles involved in the Sample Program
18. and BK 12 Apply the BCD mode or binary mode voltage value specified in Table 5 B for the range being calibrated to Channel 1 input terminals on field wiring arm Table 5 B All Bits OFF 1 2 LSB Voltage Range BCD Mode Binary Mode 1 to 45 volts 1 0020 volts 1 0005V DC 0 to 5 volts 0 0025 volts 0 0006V DC 10 to 10 volts 9 9900 volts 9 9976V DC 0 to 10 volts 0 0050 volts 0 0012V DC 5 to 5volts l 4 9950 volts 4 9988V DC 1 Use this voltage only for calibrating the 20 to 20 mA range 13 Connect the other seven inputs to ground That is jumper Terminals 3 to 4 5 to 6 etc and set SW 1 Position 5 to OFF 14 Adjust R7 so that the data value corresponding to Channel 1 toggles between 000 and 001 as observed beneath the second rung in channel select program 15 Apply the BCD mode or binary mode voltage value specified in Table 5 C for the range being calibrated to Channel 1 input terminals 16 Adjust R5 so that the data corresponding to Channel 1 toggles between 998 and 999 BCD or 7776 and 7777 binary 17 Repeat Steps 12 through 19 once or twice until the specified indications Steps 14 and 16 are obtained for all channels 18 Seal potentiometers with sealant Calibration Procedure 1771 E1 Chapter 5 Calibration Table 5 C FS 3 2 LSB Voltage Range BCD Mode Binary Mode 1 to 5VDC 4 9940V DC 4 9985V DC 0 to 5VDC 4 9925V DC 4 9983V DC 0 to 10VDC 9 9850V DC 9 9961V D
19. detailed below The program shown in Figure E 2 and defined in detail in Sample Program directs the PC processor to perform the following sequence of operations for each of the 64 channels one at a time Select the Expander Select the Channel The word of the selected channel is then transferred from the Analog Input Module to the module s associated input image table word location 114 in this example Examine the value word s data valid and diagnostic status bits Store the value word if the data valid and diagnostic bits are ON and OFF respectively E 1 Appendix E Application Program Single Transfer with Expanders E 2 Select The expander counter rung channel counter rung expander select bit rungs and channel select bit and channel select unlatch rungs are used to select the 64 channels one at a time The channel counter is incremented by one count after each channel has been single transferred The expander counter is incremented by one count after each eight channels have been single transferred Both counters start at Count 1 and are reset to Count by the eighth increment thereafter At any given time the count in the expander counter selects one of the expander select rungs enabling it to write a corresponding expander select bit into the output image table word 014 of the Analog Input Module At the same time the count in the channel counter selects one of the channel select latch
20. e eG 6 6 6 093 093 093 093 093 093 093 093 420 421 422 423 424 425 426 427 22502 128 eal a eG e 6 g 6 1 6 844 844 844 844 844 844 844 844 430 431 432 433 434 435 436 437 22503 129 al ea eH a eG 6 6 6 657 657 657 657 657 657 657 657 440 441 442 443 444 445 446 447 22504 130 al eg eG e eal aeae 468 468 468 468 468 468 468 468 450 451 452 453 454 455 456 457 22505 131 G8 6 16 41 6 16 16 16 1 6 373 373 373 373 373 373 373 373 460 461 462 463 464 465 466 467 22506 132 eela a ajla 281 281 281 281 281 281 281 281 470 471 472 473 474 475 476 477 22507 133 G G eak 6 4 eG 6 G 6 285 846 752 098 191 472 659 566 END 01055 Rungs 48 111 Final Analog Storage 400 477 Each rung represents one channel on one expander For a full system one master 64 channels 64 of these rungs are required When the expander storage bit for Expander 1 20100 is ON Channel 1 Select Bit 01400 is ON Then the analog value at Expander 1 Channel is transferred to Storage Word 400 final valid data This procedure is followed for the remaining 63 channels Rungs 112 Storage Bit 20112 Bit 20112 is energized when the data valid bit is ON or Diagnostic Bit 20005 is ON Bit 20112 is a storage bit used in Rungs 113 120 E 13 Appendix E Application Program Single Transfer with Expanders
21. with Expander 1 connected to Analog Input Module Channel 1 There can be no gap in the order Each Expander is programming plug conditioned to correspond with the Analog Input Module channel it is connected to Each Expander is programming plug conditioned to correspond with the number quantity of its own input channels that are to be used The field wiring arm connections must be consecutive beginning with the Channel 1 input There can be no gap in the order Table 3 B demonstrates the correspondence that would result from conditioning and connecting the 23 channel configurations shown in Figure 3 1 in accordance with the instructions in Chapter 2 under Module Selection Channel Selection and Multiplex Cables This table demonstrates how consecutive locations in the block file correspond to input channels for the representative configuration in Figure 3 1 Chapter 3 Programming Table 3 B Block File Correspondence Example Block File Expander Module Expander Module Analog Input Module Location Number Channel Channel 2 1 2 3 1 3 4 1 4 5 1 5 6 1 6 7 1 7 8 1 8 9 2 1 10 2 2 11 2 3 12 2 4 13 2 5 14 2 6 15 3 1 16 3 2 pom fo fo fo 18 3 4 19 4 20 5 21 6 22 7 23 8 Chapter 3 Programming Single Transfer Interface The following two sections describe the single transfer format and the associated channel select word CAUTION Single transfer must not be used in remote applications except
22. 15V power supply connections to the Analog Input Module This module draws 150 mA 45V 60 mA 15V DC and 60 mA 15V DC from the external power supply These values should be used to find the load handling capability required of the external power supply Expander Module The Expander Module receives 5V DC power from the backplane of the UO rack in which it is housed Each Expander draws 150 mA from the backplane power supply This value should be used to find the total current drawn by all modules in an I O rack to determine that the power supply will not be overloaded Refer to Figure 2 6 for external 15V DC power supply connections to the Expander Modules Note that if the same external power supply that services the Analog Input Module is used for the Expanders the 15V DC common Expander Terminal 2 should not be connected to the external power supply common If a separate external power supply is used for the Expanders the power supply common should be connected to Terminal 2 of the Expanders Field Wiring Arms The 1771 El1 and 1771 E2 Expanders each draw 50 mA 15V DC and 50 mA 15V DC from the external power supply and the 1771 E3 draws 200 mA 15V DC and 200 mA 15V DC These values should be used to find the load handling capability required of the external power supply Refer to Figure 2 8 The Analog Input Module has a front panel DIAGNOSTIC LED that is defined in detail in Chapter 3 under Diagnostics The
23. 6 Select Unlatch 01 005 33 JoL U 20005 1101 7 Channel 7 Select T 006 34 f OFF 01006 Channel 6 Control Unlatch 20005 35 U 01006 11017 11016 Channel 7 Control a 36 he ol p OFF 20006 01006 0110 Channel 7 Transfer 0306 37 e PUT 074 000 20006 Channel 7 Select Unlatch 01 006 38 LU 20006 11017 Channel 8 Select a 007 39 jl E OFF 01007 Channel 7 Control Unlatch 20006 40 U 01007 11017 11016 Channel 8 Control cee 4 Jp DFF 20007 01007 0110 Channel 8 Transfer 0307 42 6 PUT 000 000 20007 Channel 8 Select Unlatch 01 007 43 Jof U END 01159 D 12 Appendix D Application Programs Single Transfer without Expanders Rung 6 Channel 1 Control 20000 During the first scan after Channel 1 was selected by Rung 3 after the Channel 1 value word was transferred from the Analog Input Module to Input Image Table Word Location 110 this rung latches Channel 1 Control Bit 20000 to ON provided Data Valid Bit 11017 is ON and Diagnostic Bit 11016 is OFF Rung 7 Channel 1 Transfer 0300 This rung transfers the Channel 1 value word from Input Image Table Word Location 110 to Final Storage Word Location 0300 provided Channel 1 Control Bit 20000 is set to ON Rung 8 Channel 1 Select Unlatch 01000 This rung unlatches the Channel 1 select bit 01000 Rungs 9 43 Same as Rungs 3 and 5 8 except apply to Channels 2 through 8 D 13
24. 942 Cat no 1771 E2 includes Analog Input Expander 12 Bit Six Differential Inputs cat no 1771 E2C Field Wiring Arm cat no 1771 WF and Product Data Publication 1771 942 Cat no 1771 E3 includes Analog Input Expander 12 Bit Six Sourcing Inputs cat no 1771 E3C Field Wiring Arm cat no 1771 WF and Product Data Publication 1771 942 The following five sections outline the input range and expansion capabilities and power requirements for the Analog Input and Expander Modules Analog Input Module Input Ranges The Analog Input Module is available with its eight inputs conditioned to accommodate any one of the four voltage or three current ranges listed in Table 1 B and Table 1 C Before leaving the factory the module is conditioned and calibrated for the range ordered Table 1 A If the user changes the range Chapter 2 the module may have to be recalibrated in accordance with Chapter 5 Chapter 1 Introduction Expansion Using only 1771 E1 Expanders the input point capacity of the Analog Input Module can be expanded from a maximum of eight points without Expanders to a maximum of 64 points with Expanders Using only 177 1 E2 or 177 1 E3 Expanders or both the input point capacity of the Analog Input Module can be expanded to a maximum of 48 points When using a mixture of 1771 E1 1771 E2 and 1771 E3 Expanders the input point capacity of the Analog Input Module can be expanded to some maximum number
25. E1 Positions A C D E and F Remove 5 0000V 0 1 mV from Input Terminal 18 Insert programming plugs into E1 Positions G and J Apply 10 0000V 40 1 mV to Channel 1 Input Terminal 18 and ground Input Terminal 17 Adjust R10 for 5 0000V 40 1 mV on output Terminal 6 Remove programming plug from E1 Position J Insert programming plugs into E1 Positions H and I Apply 10 0000V 40 1 mV to Channel 1 Input Terminal 18 Adjust R11 for 5 0000V 0 1 mV on output Terminal 6 Insert programming plugs into E1 Positions K and L Apply 10 0000V 0 1 mV to Channel 1 Input Terminal 18 Adjust R12 for 1 0000V 0 1 mV on output Terminal 6 Apply 10 0000V 40 1 mV to Channel 1 Input Terminal 18 Adjust R13 for 5 0000V 0 1 mV on output Chapter 5 Calibration Repeat Steps 43 through 46 one time if necessary 47 Remove 10 0000V 0 1 mV from Channel 1 Input Terminal 18 and ground from Input Terminal 17 Current Range Adjustment Insert programming plugs into E4 Positions D1 through D6 and connect a test setup as shown in Figure 5 4 to the selected channel input for each of the following steps and adjust so that VI 2 V2 Remove all programming plugs from E1 input output range and insert program plug into El Position F 48 Select Channel 1 input Terminals 18 and 17 and adjust R32 49 Select Channel 2 input Terminals 16 and 15 and adjust R31 50 Select Channel 3 input Terminals 14
26. E3 Terminal 5 4 1771 E1 Uset 20 mA 1771 E2 Use 20 mA 1771 E3 Use 20 mA COM 10477 37 Select Channel 1 input and adjust R32 38 Select Channel 2 input and adjust R30 39 Select Channel 3 input and adjust R29 40 Select Channel 4 input and adjust R28 41 Select Channel 5 input and adjust R27 42 Select Channel 6 input and adjust R26 43 Select Channel 7 input and adjust R18 44 Select Channel 8 input and adjust R17 45 Seal potentiometers with sealant 5 12 Calibration Procedure 1771 E2 46 47 48 49 50 51 52 Chapter 5 Calibration Turn off power to programmable controller and I O racks Disconnect test equipment Remove extender board Set DIP switches Chapter 2 under Conditioning Options 1771 IF and programming plugs Chapter 2 under Conditioning Options 1771 E1 E2 and E3 as required for normal operation Insert module into its I O rack slot Restore power and user program Turn off power and reconnect all field wiring arms to I O modules To avoid any unwanted motion you should WARNING Do not attempt calibration without first reading and thoroughly understanding General Recommended Test Equipment Channel Selection and all steps in this procedure Turn off power to programmable controller and I O racks Disconnect all field wiring arms from I O modules and restore power Make a copy of the user program Erase u
27. L 005 001 OFF E 6 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No 232 205 01410 17 G u 005 002 232 205 01411 18 G L 005 002 OFF 232 208 01411 19 G U 005 003 232 206 01412 20 G L 005 003 OFF 232 207 01412 21 G j U 005 004 232 207 01413 22 G j L 005 004 OFF 232 210 01413 23 LG HH U 005 008 232 300 01414 24 G 2 L 005 005 ON 282 301 01414 25 G U 005 006 232 20 01415 26 0 L 005 006 OFF 282 212 01415 27 G u 005 007 232 212 01416 28 LG L 005 007 OFF 232 213 01416 29 a U 005 008 232 213 01417 30 G L 005 008 OFF 232 214 01417 31 LG Uu 005 009 01410 20110 20005 Expander Storage Bits 20100 32 j m k l 01411 20110 20005 20101 33 doe Ale U 01412 20110 20005 20102 34 J E Et 01413 20110 20005 20103 35 xp he Ah te E 7 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No 01414 20110 20005 20104 36 01415 20110 20005 20105 37 b E
28. ON thus specifying that 63 value words be transferred If all of Bits 0 through 5 are left OFF Rungs A through F left out of the program default value up to 64 words will be transferred If only Rungs A and B are included three words will be transferred etc In the example in Figure 3 3 the Analog Input Module location 120 is stored in the first available timer counter word location 030 The first word location 050 of the block file of locations into which the value words of the Analog Input Module are to be transferred is stored in Timer Counter Word Location 130 100 above 030 When Rung G is executed by the PC processor in the normal course of its program cycle the processor is directed by the instructions of the rung to perform the following operations The first GET instruction directs the PC processor to read Analog Input Module Location 120 out of Timer Counter Word Location 030 The second GET instruction directs the PC processor to read the address 050 of the first word location of the block file out of Timer Counter Word Location 130 The OUTPUT ENERGIZE instruction directs the PC processor to set Bit Number 7 of Output Image Table Word Location 120 to ON During the subsequent output image table scan part of its program scan the PC processor transfers the ON condition of Bit Number 7 to the Analog Input Module The Analog Input Module responds by activating a hardware status line The PC processor polls
29. a block transfer application program for programming a PLC 2 20 Programmable Controller to access an Analog Input Module that has no associated Expander Modules The Sample Program that follows is designed to accommodate the four channel hardware configuration shown in Figure B 1 Overview provides an overview of the principles involved in the Sample Program detailed below Figure B 1 Hardware Configuration Four Channels Analog Input Module 4 Channels Backplane 1 Bus um 2 3 To PLC 2 20 4 Processor Not Used 10483 The program shown in Figure B 2 and defined in detail in Sample Program directs the PC processor to perform block transfer Block transfer from the Analog Input Module to initial storage word locations is accomplished entirely by the block length and block transfer rungs When block transfer is complete and the transferred value words are declared valid the four value words are transferred from their initial storage word locations to their final storage word locations by the final transfer rungs B 1 Appendix B Application Program Block Transfer without Expanders Figure B 2 Sample Program Block Transfer Four Channels Rung LADDER DIAGRAM DUMP No START 02000 11207 05016 Data Valid 02002 E E Er E rT Block Transfer Flag Clear 02000 D 2 U Block Length 01200 i U ON 01201 i LU ON 01202 i L 01203 iv LU 01204 V
30. component side cover of the module Figure 2 2 Unused programming plugs are stored in the storage area of the circuit board The associated Analog Input Module is conditioned to be Master 1 or 2 Each Expander Module is conditioned to accommodate a Master 1 or Master 2 Analog Input Module Each Expander output voltage range is conditioned to accommodate the associated Analog Input Module voltage input Each Expander Module is also numbered 1 through 8 and programming plug conditioned to correspond to that number In addition each Expander Module is conditioned to establish how many of its inputs are used and what voltage or current ranges its inputs will accept 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 5 Chapter 2 Installation Table 2 A Voltage Current Ranges Switch SW 3 rf Baan Range Pet ces ap OR hh eee pce te 1 to 5V DC 4 to 20 mA 20 mA 0 to 10V DC 0 to 5V DC 0 to 20 mA 10V DC Figure 2 3 DIP Switch Assembly SW 1 ON Block Transfer OFF Single Transfer ON Calibration of ON BCD Mode 1 to 5V Range OFF Binary Mode OFF Normal Operation 1 2 3 4 5 0 N N ON 0 0 F OFF F i i ON Master ON Master 2 OFF Standalone OFF Master 1 or Standalone 10459 2 6 Chapter 2 Installat
31. input It provides sufficient output power for two Analog Input Modules or one Analog Input Module and one 1771 E3 or three 1771 El or 1771 E2 Expanders The Expander Modules must be plugged into the I O rack in which the associated Analog Input Module resides Each Expander receives 5V DC operating voltage from the backplane of the I O rack from which it draws 150 mA Overview of Manual Chapter 1 Introduction The Expander Module also receives 15V DC operating voltage from an external power supply which may be the same one that is required to service the Analog Input Module The 1771 E1 and 1771 E2 each draw 50 mA 15V DC and 50 mA 15V DC from this supply Since the 177 1 E3 accommodates sourcing inputs and therefore provides its own signal current it draws 200 mA 15V DC and 200 mA 15V DC from the external supply The remainder of this manual provides installation programming troubleshooting and calibration information for the Analog Input and Expander Modules described above Appendix A outlines general installation practices and Appendices B through F provide a selection of application programs to supplement the general programming information in Chapter 3 Table 1 A Catalog Number Range Codes 1771 IF 1771 IF XX Identifying Code Q Code we 3 e 01 1 to 45V DC 02 0 to 45V DC Voltage 10 to 10V DC Oto 10V DC 05 4 to 20 mA Current 06 0 to 20 mA 07 20 to 20 mA Basic Catalog No
32. 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 MA Argentina e Australia e Austria e Bahrain e Belgium Brazil e Bulgaria e Canada Chile e China PRC lt Colombia s Costa Rica s Croatia e Cyprus e Czech Republic e Denmark lt Ecuador e Egypt e El Salvador s Finland e France s Germany e Greece e Guatemala e Honduras e Hong Kong s Hungary e Iceland e India s Indonesia e Ireland e Israel Italy e Jamaica e Japan e Jordan e Korea e Kuwait e Lebanon e Malaysia e Mexico e Netherlands e New Zealand e Norway Pakistan e Peru e Philippines e Poland e Portugal e Puerto Rico e Qatar e Romania s Russia CIS e Saudi Arabia e Singapore 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 s United States e Uruguay s 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 2 May 1985 PN 955104 13 Supersedes 1771 803 October 1982 Copyright 1985 Allen Bradley Company Inc Printed in USA
33. rungs enabling it to write a corresponding channel select bit into the same output image table word During the output image table scan the channel select word is transferred from Output Image Table Word Location 014 to the Analog Input Module completing the channel selection Transfer On the next or some later program scan depending on how long the Analog Input Module s on board microcomputer requires to respond to the channel select word the Analog Input Module responds by asserting the selected channel s value word During the input image table scan of the same program scan the asserted value word is transferred to Input Image Table Word Location 114 Bits 16 and 17 of that word are the diagnostic and data valid bits respectively Examine During the first program scan after the value word is transferred to the input image table copies of the data valid and diagnostic bits are cached in bit storage locations by the data valid bit and diagnostic bit rungs If the cached data valid and diagnostic bits are ON and OFF respectively one of the expander valid bit rungs will set a storage bit expander valid bit corresponding to the selected Expander Store In accordance with the expander valid bit if it is ON and the channel select latch bit the corresponding final analog storage rung will transfer the value word to a storage word location Appendix E Application Program Single Transfer with Expanders
34. the status line every I O scan When it finds the status line active it performs block transfer from the Analog Input Module at I O Rack Location 0120 to the block file beginning at Word Location 050 Completion of block transfer is signified by the setting to ON of Bit 7 in the Analog Input Module s Input Image Table Byte Location 1120 Block Transfer File Value words are block transferred into 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 Expander Module input channel or Analog Input Module input channel The configuration of that correspondence is 3 7 Chapter 3 Programming 3 8 determined by how many Expander Modules are used how many input channels of each Expander Module are used and how many of the Analog Input Module s non expanded input channels are used These factors dictate the correspondence because they dictate how some of the Expander s programming plug positions are selected and how the Expanders are connected to the Analog Input Module Specific instructions for making these programming plug position selections and connections are given in Chapter 2 under Module Selection Channel Selection and Multiplex Cables In summary these instructions specify the following When less than eight Expanders are used they are connected to the Analog Input Module s input channels in consecutive order beginning
35. to program a programmable controller PC processor to interface with an Analog Input Module with or without associated Expander Modules Appendices B through F supply sample application programs Depending on the PC processor being used two methods of interface are available single transfer and block transfer Table 3 A identifies which processors may be used with block transfer and which may be used with single transfer local configuration and single transfer remote configuration 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 other programming panel to write a user program into the memory of the processor 3 1 Chapter 3 Programming Operational Overview 3 2 Table 3 A Processor Interface Capabilities Block Single Transfer Processor Transfer Local Remote Mini PLC 2 15 Cat No 1772 LV YES YES N A Mini PLC 2 Cat No 1772 LN3 YES YES N A Mini PLC 2 Cat No 1772 LN1 LN2 NO YES N A PLC 2 20 Cat No 1772 LP1 LP2 YES YES NO3 PLC 2 30 Cat No 1772 LP3 YES YES NO PLC 3 Cat No 1775 L1 L2 YES N A NO3 PLC Cat No 1774 LB2 LC2 NO N A
36. with the PLC Programmable Controller Otherwise the integrity of the transferred value words will not be maintained Single transfer however may be used in all cases when the Analog Input Module is in the calibrate mode Refer to Table 3 A for definitions of local and remote configurations Single Transfer Figure 3 4 shows a general method of programming a PC processor for single transfer This is a general format used with any Allen Bradley PC processor When Rung A is enabled the OUTPUT ENERGIZE instruction directs the PC processor to write Channel Select Bit OX into Output Image Table Lower Byte Location 012 Lower Byte Location 012 corresponds to the Analog Input Module upon which single transfer is to be performed When the PC processor next updates the I O output modules by scanning the output image table it transfers Channel Select Bit OX from Output Image Table Byte Location 0120 to the Analog Input Module The Analog Input Module responds to the channel select bit by asserting the value word corresponding to the analog input channel selected If the asserted word is declared valid by the Analog Input Module the word s bit numbers 17 and 16 will be set to ON and OFF respectively After that the first time the PC processor scans the input image table to update it with asserted values from input I O modules the PC processor transfers the Analog Input Module s asserted value words to the input image table word location 1
37. 0 468 20104 01403 114 443 83 E Ete PUT 000 468 20104 01404 114 444 84 m ae PUT 000 468 20104 01405 114 M5 85 jue WEB PUT 000 468 20104 01406 114 446 e Hae PUT 000 468 20104 01407 114 447 87 ae PUT 000 468 20105 01400 114 450 88 G PUT 000 373 20105 01401 114 451 R LG PUT 000 373 20105 01402 114 452 90 G PUT 000 373 20105 01403 114 453 91 G PUT 000 373 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No 20105 01404 114 454 92 a PUT 000 373 20105 01405 114 455 93 T it d PUT 000 373 20105 01406 114 456 94 a PUT 000 373 20105 01407 114 487 95 P4 44 PUT 000 373 20106 01400 114 460 96 TEES dem PUT 000 281 20106 01401 114 461 97 P4 Hae PUT 000 281 20106 01402 114 462 98 pq 1 ee PUT 000 281 20106 01403 114 463 99 G PUT 000 281 201006 01404 114 464 100 ES ae PUT 000 281 20106 01405 114 465 101 b qr PUT 000 281 20106 01406 114 466 102 Hae PUT 000 281 20106 01407 114 467 103 He PUT 000 281 20107 01400 114 470 104 Ha PUT 000 285 20107 01401 114 471 105 ES la PUT 000 846 20107 01402 114 472 106 ji m t 8 L PUT 000 75
38. 057 See Rungs 1 2 Rung 20 Display Only 050 057 This rung has no effect on program operation It provides a means of displaying the final valid analog values Overview below provides an overview of the sample program shown in Figure D 3 and detailed in Sample Program below OVERVIEW The immediate update program in Figure D 3 is similar to the Continuous Update program The immediate update program includes an IMMEDIATE INPUT instruction in Rung 4 which enables each program scan to select a channel and store the previously selected channel s value word In the continuous update program every other scan selects a channel and stores the previously selected channel s value word SAMPLE PROGRAM The following paragraphs define each of the rungs in the sample program shown in Figure D 3 D 5 Appendix D Application Programs Single Transfer without Expanders Figure D 3 Sample Program Single Transfer Immediate Update 8 Channels PLC 2 LADDER DIAGRAM DUMP Rung No 9 START Scan Counter 040 1 CTU PR 008 AC 000 040 2 CTU PR 008 AC 000 04015 Scan Counter Reset 040 3 TE CTR PR 008 AC 000 112 11217 11216 040 041 112 Channel 1 Transfer 050 4 pipere edd PUT 000 001 000 000 040 041 Channel 2 Select 01201 5 8 000 001 11217 11216 040 042 112 Channel 2 Transfer 051 6 E4146 4 4 G PUT 000 002 000 000 040 042 Channel 3 Select 0
39. 1002 Channel 2 Control Unlatch 20001 15 I U D 10 Rung No 18 19 20 21 22 23 24 25 26 27 28 29 30 Figure D 4 Sample Program Single Transfer 8 Channels PLC Continued Appendix D Application Programs Single Transfer without Expanders 01002 11017 11016 Channel 3 Control aor MIB br 20002 01002 0110 Channel 3 Transfer 0302 ae PUT 074 000 20002 Channel 3 Select Unlatch 01002 J U 20002 11017 Channel 4 Select at 003 ds Weel oh OFF 01003 Channel 3 Control Unlatch 20002 U 01003 11017 11016 Channel 4 Control LU i dem HAT OFF 20003 01003 0110 Channel 4 Transfer 0303 a PUT 074 000 20003 Channel 4 Select Unlatch 01 003 kn 7 LU 20003 11017 Channel 5 Select t 004 T EE OFF 01004 Channel 4 Control Unlatch 20003 T LU 01004 11017 11016 Channel 5 Control aa j o3 p dl DFF 20004 01004 0110 Channel 5 Transfer 0304 ae PUT 074 000 20004 Channel 5 Select Unlatch 01004 jf u 20004 1101 Channel 6 Select 005 jt OFF ae Channel 5 Control Unlatch 20004 LU D 11 Appendix D Application Programs Single Transfer without Expanders Figure D 4 Sample Program Single Transfer 8 Channels PLC Continued Rung No 01005 11017 11016 Channel 6 Control an 31 Sea le DFF 20005 01005 0110 Channel 6 Transfer 0305 32 kae PUT 074 000 20005 Channel
40. 12 that corresponds to the Analog Input Module The next time the PC processor executes Rung B Figure 3 4 the EXAMINE ON and EXAMINE OFF instructions direct the PC processor to read Bits 17 and 16 of the asserted value word in Input Image Table Word Location 112 If it finds that Bit Numbers 17 and 16 of that word 3 10 Chapter 3 Programming are ON and OFF respectively Rung B is enabled With Rung B enabled the GET PUT instruction pair directs the PC processor to transfer the asserted value word from Input Image Table Word Location 112 to User Memory Word Location 050 The single transfer for one value word is thus complete When there are Expanders associated with the Analog Input Module two channel select bits must be used one to select the Expander and one to select the analog input channel of the Expander Figure 3 5 shows how two rungs are used Rung A selects the Expander Module channel with Bit OX Rung B selects the Expander with Bit LY Channel Select Word The channel select word used in single transfer consists of one 16 bit word with either one or two bits set to the ON condition and the remaining bits left in the OFF condition Figure 3 4 and Figure 3 5 show how the one or two bits are set Bit OX selects either the Analog Input Module channel in the non expanded configuration or the input channel of the Expander Module in the expanded configuration Bit 1Y selects an Expander in the expanded configuration An Ana
41. 1202 7 8 000 002 11217 11216 040 043 112 Channel 3 Transfer 052 8 T uel deba PUT 000 003 000 000 040 043 Channel 4 Select 01203 9 6 kH 000 003 11217 11216 040 044 112 Channel 4 Transfer 053 10 Hea e f PUT 000 004 000 000 040 044 Channel 5 Select 01204 11 Pert 000 004 11217 411216 040 045 112 Channel 5 Transfer 054 12 EHI E 8TH 1 H 8 PUT 000 005 000 000 040 045 Channel 6 Select 01205 13 6 Hk 000 005 11217 11216 040 046 112 Channel 6 Transfer 055 14 He HH jH a PUT 000 006 000 000 D 6 20 21 Appendix D Application Programs Single Transfer without Expanders Figure D 3 Sample Program Single Transfer Immediate Update 8 Channels PLC 2 Continued 040 046 Channel 7 Select 01206 oH c MT 000 006 11217 11216 040 047 112 Channel 7 Transfer 056 A iH e H a 11 BUT 000 007 000 000 040 047 Channel 8 Select 01207 EEE EE SI 11217 11216 040 060 112 Channel 8 Transfer 057 A Mek 4 6 _ H Pur 000 000 000 000 040 060 Channel 1 Select 01200 Display Only 012 NT 050 051 052 053 054 055 056 057 8 6 4 6 Gl 6 6 a a END 0215 000 000 000 000 000 000 000 000 Rungs 1 3 Scan Counter 040 Counter 040 increments by one count at each program scan and it is reset to count zero by Rung 3 when its accumulated count reaches Pr
42. 1771 IFs that can be used in a given I O rack is restricted by the presence of certain other intelligent I O modules in the same rack Stepper Motor Assembly Modules cat no 1771 QA 2 1 Chapter 2 Installation Conditioning Options 1771 IF 2 2 always master Servo Positioning Assembly Modules cat no 1771 QC always master Analog Output Module cat no 1771 OF master or standalone and Thermocouple Input Module cat no 1771 IX always master 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 1771 IFs per I O rack is limited only to the number of slot pairs available provided there are no 1771 QAs 1771 QCs master 1771 IFs master 1771 OFs or 1771 IXs Upto four standalone 1771 IFs can be used with one master 1771 OF one master 1771 IF or one 1771 IX always master Up to three standalone 1771 IFs can be used with two master 1771 OFs two master 1771 IFs one master 1771 OF and one master 1771 IF or one 1771 QA or 1771 QC Upto two standalone 1771 IFs can be used with one 1771 IX always master and one master 1771 IF or one master 1771 OF Expanded There can be no more than two master 1771 IFs one master 1771 IF and one 1771 IX always master or one master 1771 IF and one master 1771 OF A master 1771 IF is not permitted with a 1771 QA or 1771 QC Consult the user s manua
43. 2 20107 01403 114 473 107 Ha PUT 000 098 20107 01404 114 474 108 EI Pel PUT 000 191 20107 01405 114 415 109 Ha PUT 000 472 E 11 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No 20107 01406 114 A6 110 Ha PUT 000 659 20107 01407 114 477 111 E4 a PUT 000 566 20110 Storage Bit 20112 112 I 20005 f 20112 Channel Select Unlatch 01400 113 U 20112 01401 114 f U 20112 01402 115 Uu 20112 01403 116 cu 20112 01404 117 LU 20112 01405 118 U 20112 01406 119 l U 20112 01407 120 ET U 20005 20110 Channel Counter Reset 230 121 L H t CTR PR 009 23015 AC 002 20110 23215 Expander Counter Reset 232 122 DRE CTR PR 009 AC 005 Initialization Bit 20117 123 030 Channel Counter Flag Bit 040 124 lit TON 15 0 1 PR 010 AC 000 040 226 125 lt L 15 OFF 00 E 12 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No Display Only 400 401 402 403 404 405 406 407 22500 126 all eg eG 6 4 al 6 6 6 562 562 562 562 562 562 562 562 410 411 412 413 414 415 416 417 22501 127 al eg eg
44. 29 30 31 32 33 Chapter 5 Calibration Adjust R8 for 7 5000V 0 1 mV on output Terminal 6 Remove 5 0000V 0 1 mV from Test Strip E2 Pin 3 Insert programming plug into E1 Position C Disconnect ground from Calibration Input Test Strip E3 Pin 2 Apply 5 0000V 0 1 mV to Calibration Input Test Strip E3 Pin 2 Adjust R9 for 10 0000V 0 1 mV on output Terminal 6 and remove 5 0000V 0 1 mV from E3 Pin 2 Output Gain Adjustment 34 35 36 37 38 39 40 41 42 43 44 45 Remove programming plugs from E1 Positions A C D E and F Insert programming plugs from E1 Positions G and J Apply 10 0000V 0 1V to Calibration Input E3 Pin 2 Adjust R10 for 5 0000V 0 1V on output Terminal 6 Remove programming plug from E1 Position J Insert programming plugs into E1 Positions H and I Apply 10 0000V 40 1 mV to Test Strip E3 Pin 2 Adjust R11 for 5 0000V 0 1 mV on output Terminal 6 Insert programming plugs into Positions K and L Apply 10 0000V 0 1 mV to Calibration Input Test Strip E3 Pin 2 Adjust R12 for 1 0000V 0 1 mV on output Terminal 6 Apply 10 0000V 40 1 mV to Calibration Input Test Strip E3 Pin 2 5 23 Chapter 5 Calibration 46 Adjust R13 for 5 0000V 0 1 mV on output Repeat Steps 43 through 46 one time if necessary 47 Remove 10 0000V 0 1 mV from Calibration Input Test Strip E3 Pin 2 Current Range Adjustment
45. 5 except apply to Channels 3 through 8 and 1 Even Rungs 8 16 Channel 3 8 Transfer 052 057 Same as Rung 6 except apply to Channels 3 through 8 Rungs 20 21 Display Only 050 057 These rungs have no effect on program operation They provide a means of displaying the final analog values Overview below provides an overview of the sample program shown in Figure D 4 and detailed in Sample Program below Appendix D Application Programs Single Transfer without Expanders OVERVIEW The program in Figure D 4 sequentially transfers the Channel 1 through Channel 8 value words from the Analog Input Module to its corresponding Input Image Table Word Location 110 and if valid transfers them to final storage word locations SAMPLE PROGRAM The following paragraphs define each of the rungs in the sample program shown in Figure D 4 Rungs 1 2 Initialization 0200 0100 When the processor is in the run or program mode Bit 32200 Rung 4 is OFF When the processor is placed in the run mode Bit 32200 remains OFF until set to on by Rung 4 During the first scan after the run mode is entered therefore Bit 32200 is OFF until the scan reaches Rung 4 During the first part of the initial scan up to Rung 4 Rung 1 resets all Channel 1 8 Control Bits 20000 through 20007 to OFF and Rung 2 resets all Output Image Table Bits 01000 through 01007 channel select bits to OFF Rung 3 Channel 1 Select 01000 During the first pa
46. 5 1 Channel Selection cece eee eee e 5 1 Calibration Procedure 1771 IF 00ce ee eeee 5 3 Calibration Procedure 1771 E1 Lsss 5 7 Calibration Procedure 1771 E2 2 c eee eee 5 13 Calibration Procedure 1771 E3 0 0ce eee aces 5 19 Installation Practices serrer A 1 Interference Suppression 0002 0 ee eee eee eee AA Conduit Considerations 0c cece eee eeeee A 3 Acceptable Wire Gauge 2 0 cc cece eee eens A 4 Shielded Cable 0 c cece eee Re A 4 Table of Contents Application Program Block Transfer without Expanders General iz pea ive ERE RKESUR EY eae Ss UVGNISW los dead ete dtasdadheseebes ES IS SESS Sample Program ux sux asus Sees er xXE E Eau e daa Application Program Block Transfer with Expanders General desi quiet ies uere EL E LUE Overview gerer e ne xen err RE weds Sample Program so aexduk dre d eR ERCINYRigcerERR eZ ESSS Application Programs Single Transfer without Expanders Continuous Update 1 1 cies cn Rav LR Rp E RR ee Immediate Update 0 0 ccc cece ees PEC sist eid ad aR E abe Roses E irea bees ees Application Program Single Transfer with Expanders CIC MTM PC DOVEIVIBW Lodo Lud K EE SER a EA R bebe Died uode Sample Program 243 chet e sags demand Eater bet eb Less Than Eight Expanders 00 00 cece eee eeaes Less Than Eig
47. 9 when its accumulated count reaches Preset Value PR 17 Rung 3 Channel 1 Select 01200 When Counter 040 s accumulated count equals 001 Scan 1 and 002 Scan 2 Output Image Table Bit 01200 is set to ON thus selecting Channel 1 of the Analog Input Module residing in Rack 1 Group 2 Slot 0 Rung 4 Channel 1 Transfer 050 When Counter 040 s accumulated count equals 003 Scan 3 the Channel value word in Input Image Table Word Location 112 is transferred to Final Storage Word Location 050 provided Data Valid Bit 11217 is ON and Diagnostic Bit 11216 is OFF Odd Rungs 5 17 Channels 2 8 Select 01201 01207 Same as Rung 3 except apply to Channels 2 through 8 Rung No 10 Appendix D Application Programs Single Transfer without Expanders Figure D 2 Sample Program Single Transfer Continuous Update 8 Channels PLC 2 LADDER DIAGRAM DUMP START Scan Counter 040 CTU PR 017 AC 000 040 CTU PR 017 AC 000 040 041 Channel 1 Select 01200 es GH L 000 001 04 H 00 11217 11216 040 043 112 Channel 1 Transfer 050 Hea HH Hae PUT 000 003 000 000 040 043 Channel 2 Select 01201 Gh lt L 000 003 044 H Je 00 11217 11216 040 045 112 Channel 2 Transfer 051 Hea ae PUT 000 005 000 000 040 045 Channel 3 Select 01202 f Pak GHA L 000 005 046 A 00 11217 11216 040 047 112 Channel 3 Transfer 052 H eH I a PUT
48. C 10 to 10VDC 9 9700V DC 9 9927V DC 5 to BV DCI 4 9850V DC 4 9963V DC 1 Use this voltage only for calibrating the 20 to 20 mA range 19 20 21 22 23 24 25 Turn off power to programmable controller and I O racks Disconnect test equipment Disconnect the ground jumpers from field wiring arm Set DIP switches as required for normal operation Chapter 2 under Conditioning Options 1771 IF Insert module into its I O rack slot Restore power and user program Turn off power and reconnect all field wiring arms to I O modules To avoid any unwanted machine motion you should 1 2 WARNING Do not attempt calibration without first reading and thoroughly understanding General Recommended Test Equipment Channel Selection and all steps in this procedure Turn off power to programmable controller and I O racks Disconnect all field wiring arms from I O modules and restore power 5 7 Chapter 5 Calibration 5 8 3 Make a backup copy of the user program 4 Erase the user program from the programmable controller memory and turn off power Refer to Figure 5 3 for Testpoint Locations Programming Plug Positions Adjustment Potentiometer Locations and Test Setup Remove the component side cover Figure 2 2 from the Expander Module and perform the following steps in the sequence given Refer to Channel Selection for instructions and Recommended Te
49. Connect a test setup as shown in Figure 5 4 to the selected channel input for each of the following steps and adjust so that V1 V2 Remove all programming plugs from E1 input output range and insert program plug into Position F 48 Select Channel 1 input and adjust R32 49 Select Channel 2 input and adjust R31 50 Select Channel 3 input and adjust R28 51 Select Channel 4 input and adjust R27 52 Select Channel 5 input and adjust R19 53 Select Channel 6 input and adjust R17 54 Adjust R16 for 11 00V 0 01V on E3 Pin 1 55 Seal potentiometers with sealant 56 Turn off power to programmable controller and I O racks 57 Disconnect test equipment 58 Remove extender board and reinsert JPR 92 Figure 5 6 59 Set DIP switches Chapter 2 under Conditioning Options 1771 IF and programming plugs Chapter 2 under Conditioning Options 1771 E1 E2 and E3 as required for normal operation Chapter 5 Calibration 60 Insert module into its I O rack slot 61 Restore power and user program 62 Turn off power and reconnect all field wiring arms to I O modules 5 25 Interference Suppression Appendix Installation Practices When the Analog Input and Expander Modules are operated in an industrial environment with high levels of electromagnetic interference EMI special consideration should be given to reducing the EMI Such high level EMI environments often result from the equipment being cont
50. E Chassis 77 U L UT 15V DC Ground n Common 15V DC Common 15V DC External Power 15V DC Supply 5V DC Common 5V DC 1 If external power supply has a power available output connect it to the power available input of the Analog Input Module If the supply does not have a power available output use a jumper to short the power available terminals of the field wiring arm as shown 2 15V DC common on expander Module is not used if externbl15V power supply conneted toExpander Module is the same on that is concted to the Anlog Input Module as shown 10461 To select a current range first go to Voltage Range above and select the corresponding voltage range Then refer to Figure 2 4 and insert a programming plug in each CURRENT RANGE position of D1 through D6 that corresponds to an input of 1 through 6 that is required to be a current input If a plug is inserted in each of Positions D1 through D6 all inputs will be conditioned as current inputs Any position of D1 through D6 without a plug will be a voltage input Connections Chapter 2 Installation Input Range Selection 1771 E3 The Expander Module may be programming plug conditioned to have either of two current ranges on all six inputs Refer to Figure 2 4 and insert programming plugs into the INPUT RANGE positions given in Table 2 F that correspond to the input current range required When the Analog Input Module or the Analog Input Module and
51. E OFF instruction E of Figure E 3 in each of Rungs 40 through 43 This modification to Rungs 40 through 43 inhibits selection of the first four channels when data is to be transferred from Analog Input Module s group of Channels 5 through 8 6 Insert Rung F of Figure E 3 between Rungs 122 and 123 When Analog Input Module s group of Channels 5 through 8 is selected Bit 23600 is latched by Rung B and the channel counter equals 1 then the channel counter must be forced to skip over the first four Analog Input Module Channels Rung F accomplishes this by loading a count of 5 into the accumulated value of the channel counter E 15 Appendix E Application Program Single Transfer with Expanders Less Than Eight Expander Channels E 16 7 Remove unused Rungs 7 through 10 24 through 31 36 through 39 88 through 111 and 131 through 133 When less than eight Expander channels are used in the hardware configuration the program in Figure E 2 or the program in Figure E 2 modified in accordance with Less than Eight Expanders must be modified to account for the difference in configuration In essence this consists of removing rungs that pertain to unused expander channels and modifying rungs to inhibit selection of unused expander channels Example For a hardware configuration where Expander 3 uses only three channels and Expander 4 uses only six channels the program in Figure E 3 would be modified as follows Expa
52. Expander Modules have a green LED DC ON on the front panel that lights when 5V DC backplane power and external 15V DC power power are present The 1771 E3 has an additional red LED indicator FUSE BLOWN that lights when any one of the six analog input fuses opens Fuses are replaced with 1 32A fuses Littlefuse 312 031 CAUTION Replace fuses only with recommended value and type Use of other types of fuses could result in improper operation due to internal resistance of the fuse Keying Chapter 2 Installation Figure 2 8 Indicators LJ 1771 IF 1771 E1 1771 E2 1771 E3 i 1 f GN 4 L DCO DC O x V i i penn Of Of o Diagnostic ON y Z 2 Fuse D O Z A o Blown o cal Te il li 17927 Key the backplane connector for each Analog Input and Expander Module Plastic keying bands are shipped with the I O chassis These keying bands help to prevent insertion of the wrong module into a p
53. Figure 2 1 and recalibrated for that range as described in Chapter 5 Refer to Figure 2 4 and insert programming plugs into the OUTPUT RANGE positions given in Table 2 D that correspond to the output voltage range required Table 2 D Output Range Select Output Range Programming Plug Position 0 to 5V DC G H 10V DC F 0 to 10V DC G Insert plug only in the positions listed and remove any plugs from the positions in this group that are not listed Input Range Selection 1771 E1 The Expander Module can be programming plug conditioned to have any one of five input voltage ranges on all eight of its inputs Then on a per channel basis it can be further conditioned for one of three input current ranges as defined below The current range is determined by the voltage range selected To select a voltage range go to Voltage Range below to select a current range go to Current Range below Chapter 2 Installation Voltage Range Refer to Figure 2 4 and insert programming plugs into the INPUT RANGE positions given in Table 2 E that correspond to the input voltage range required Current Range The three current ranges available correspond to voltage ranges as follows 1 to 5V DC 4 to 20 mA 0to 5V DC 0 to 20 mA s 5V DC 20 mA To select a current range first go to Voltage Range above and select the corresponding voltage range Then refer to Figure 2 4 and insert a programming plug
54. LU 01205 vi u 030 130 Block Transfer 01207 A 3 8 L6 JM H 120 050 01207 Block Transfer Flag 02000 8 4 1 emae A ON 02002 05017 050 Final Transfer 150 E 5 J E ROO PUT 000 000 02002 05117 051 151 F 6 EQ GEL PUT 000 000 02002 05217 52 152 7 LJ La XA BUT 000 000 02002 05317 053 153 8 Hm Me U ge 000 000 050 051 052 053 054 aH a 61 e a END 0165 000 000 000 000 000 1 2 3 4 B 2 Appendix B Application Program Block Transfer without Expanders Sample Program The following paragraphs define each of the rungs in the sample program of Figure B 2 SCAN 1 A Rung 3 Block Transfer 01207 Preconditioning of this block transfer loadmap rung is optional 11111 is optional First Timer and Counter Accumulated Area 030 stores Module Location 120 Timer and Counter Preset Area 130 stores Data Table Pointer 050 Output Bit 01207 initiates block transfer The three channels of data are input according to Table B A B Rung 4 Block Transfer Flag 02000 Bit 01207 is examined to determine if a block transfer was initiated Bit 02000 is latched so that this information can be maintained until the next program scan Table B A Channels of Data Words Block Transfer Channel 1 Word 050 Channel 2 Word 051 Channel 3 Word 052 Channel 4 Word 053 SCAN 2 C Rung 1 Data Valid 02002 This ru
55. OUGH S8 m _ D1 THROUGH D6 Ze S Clara Channel 1 Input Qui e 2 Input 9 9 COMMON S si J Channel 3 Input nQ Channel 4 Input S uc COMMON a Channel 5 Input WL Channel 6 Input 0 Ky COMMON O ez crane 7 Input e Q Channel 8 Input Z COMMON 9S Analog Output Ims s L d S ec i SI t DN COM 1 Not Used l ox a External Power Supply 10476 5 9 Chapter 5 Calibration Input Gain Adjustment 6 Insert programming plug into El Position B 7 Disconnect Channel 1 input from ground 8 Apply 5 0000V 0 1 mV to Channel 1 input 9 Adjust R6 for 10 000V 40 1 mV on output 10 Remove programming plug from E1 Position B 11 Insert programming plugs into E1 Positions A and C 12 Adjust R7 for 10 0000V 40 1 mV on output Terminal 6 13 Remove 5 0000V 0 1 mV from Channel 1 input 14 Connect Channel 1 input to ground 15 Remove programming plug from E1 Position C 16 Insert programming plugs into E1 Positions D and E 17 Apply 5 0000V 40 1 mV to Test Strip E2 Pin 3 18 Adjust R8 for 7 5000 0 1 mV on output Terminal 6 19 Remove 5 0000V 0 1 mV from Test Strip E2 Pin 3 20 Insert programming plug into E1 Position C 21 Remove ground from Channel input and apply 5 0000V 0 1 mV to Channel 1 input 22 Adjust R9 for 10 0000V 0 1 mV on output Terminal 6 5 10 Chapter 5 Calibration
56. YES PLC 2 Cat No 1772 LR NO YES NOS UO modules interfaced with the processor via I O Adapter Module Cat No 1771 AL I O modules interfaced with the processor via a remote I O Scanner Distribution Panel and Remote I O Adapter Module Cat No 1771 AS Single transfer may be used with these processors in the remote configuration when the Analog Input Modue is in the calibrate mode Refer to Figure 3 1 The Analog Input Module scans its eight analog input channels converts their incoming analog values to digital values and stores the digital values in on board microcomputer memory locations When an Expander Module is connected to one of the Analog Input Module s input channels the incoming analog values of each of the Expander s input channels are also converted by the Analog Input Module to digital values and stored The stored value words are periodically transferred to PC processor memory via either the single transfer or block transfer method of interface For single transfer one value word is transferred at a time For block transfer up to 64 value words can be transferred at a time Block transfer will not occur until the Analog Input Module has completed scanning all of its input channels Note This diagram shows an analog input system that has been expanded from a maximum of 8 input points without Expanders to a maximum of 25 points with 3 Expanders Only 23 inputs are used Chapter 3 Programming
57. annels 22 Analog Input Channels Module Analog Expander 1 Cables 1 8 1 6 1 3 10485 C 1 Appendix C Application Program Block Transfer with Expanders Overview Sample Program C 2 The program shown in Figure C 2 and defined in detail in Sample Program directs the PC processor to perform block transfer Block transfer from the Analog Input Module to initial storage word locations is accomplished entirely by the block transfer rung When block transfer is complete and the transferred value words are declared valid the 22 value words are transferred from their initial storage word locations to their final storage word locations by the file to file move rungs The following paragraphs define each of the rungs in the sample program of Figure C 2 Rungs 1 3 Expander Fault Bits 02500 02502 The diagnostic bit for Channel 1 of each expander is examined for an ON condition If 30016 is ON Bit 02500 is latched ON indicating a fault associated with Expander 1 If Expander 2 is faulted Bit 02501 will be latched ON The user should reset these bits 02500 02501 and 02502 after the fault is corrected Rung 4 Block Transfer 030 Master module 1771 IF Master 1 is located in Rack 1 Module Group 4 Block Length 22 El 8 inputs E2 6 inputs E3 3 inputs Remaining Channels on Master Module 5 inputs Temporary analog values to be stored in Words 300 325 Enable Bit 01407 Done Bit 11047
58. articular I O rack slot Refer to Figure 2 9 through Figure 2 12 Snap keying bands onto the upper backplane connector between these numbers 1771 IF 6 8 and 22 24 Left Connector 4 6 and 32 34 Right Connector 1771 E1 8 10 and 24 26 1771 E2 2 4 and 12 14 1771 E3 2 4 and 22 24 Keying bands may be placed on the backplane connectors by means of needlenose pliers These bands can be easily repositioned as subsequent system needs require 2 19 Chapter 2 Installation Figure 2 9 Keying 1771 IF Left Right Upper Upper Backplane Backplane Connector Connector E A 2 2 4 4 6 6 C 8 8 10 10 12 12 Keying 14 14 16 16 Bands 1 16 20 20 ft 22 22 C 24 24 26 26 28 28 30 30 32 32 34 234 36 36 10463 Figure 2 10 Keying 1771 E1 2 4 6 P an 8 10 12 14 16 Keying 1 Bands 20 22 C 324 26 28 30 32 34 S 10464 2 20 Chapter 2 Installation Figure 2 11 Keying 1771 E2 C 32 e 2 4 6 Keying po n 8 Bands ee 10 c 412 36 10465 Figure 2 12 Keying 1771 E3 C T 6 8 3 10 Keying 12 Bands 14 36 10466 2 21 General Programming This chapter provides information required
59. associated Expander Modules have been conditioned in accordance with Conditioning Options 1771 IF and Conditioning Options 1771 E1 E2 and E3 the Analog Input Module and associated Expander Modules if any can be inserted into an I O rack interconnected as required and connected to external devices in accordance with the following paragraphs Appendix A outlines installation practices 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 Input Cables 1771 IF Figure 2 5 shows input cable connections for connecting analog input points directly to the Analog Input Module Note that these inputs are the same ones used to connect the multiplex cables see below when Expander Modules are used Multiplex Cables Refer to Figure 2 6 Connect one shielded twisted pair cable between the field wiring arm of each Expander Module to the field wiring arm of the associated Analog Input Module The number written on the front panel of the Expander Module the number for which it was programming plug conditioned in accordance with Conditioning Options 1771 E1 E2 and E3 corresponds with the channel number of the Analog Input Module s field wiring arm For example Expander Module Number 1 analog output Terminals 5 and 6 connects to Analog Input Module Channel 1 Left Swing Arm Terminals 1 and 2 Expander Module Num
60. ation Program Single Transfer with Expanders pertain to Expanders not present modifying the channel counter and expander counter rungs and if remaining Analog Input Module channels are to be used adding rungs to treat that group of channels as an Expander Example For a hardware configuration using four Expanders of eight channels each and using remaining Analog Input Module inputs Channels 5 through 8 as a group of single ended inputs Figure E 3 the program in Figure E 2 would be modified as follows 1 Insert Rung A of Figure E 3 between Rungs 13 and 14 of Figure E 2 This rung resets Storage Word Location 236 which represents Analog Input Module s group of Channels 5 through 8 2 Change Preset Value PR of Expander Counter 232 Rung 15 to six four Expanders plus one for Analog Input Module s group of Channels 5 through 8 plus one count for reset 4 1 1 6 in this example 3 Insert Rungs B and C of Figure E 3 between Rungs 23 and 24 Bit 23600 represents Analog Input Module s group of Channels 5 through 8 Rungs B and C are used to latch and unlatch this group of channels just as Rungs 16 through 23 are used to latch and unlatch the four Expanders 4 Insert Rung D of Figure E 3 between Rungs 35 and 36 Just as each Expander select bit of Rungs 16 through 23 is used as a condition to set an Expander storage bit Expander Select Bit 23600 should be used to energize a storage bit 20104 5 Insert an EXAMIN
61. ber 2 connects to Analog Input Module Channel 2 etc Provide service loops so that field wiring arms can pivot freely 2 15 Chapter 2 Installation 2 16 Input Cables 1771 E1 E2 and E3 For each Expander Module refer to Figure 2 7 for input cable connections Note that if all the inputs of an Expander Module are not used those that are used must be consecutive beginning with Channel 1 Input Power The Analog Input and Expander Modules each require power from the backplane and from an external supply Analog Input Module The Analog Input Module receives 5V DC power from the backplane of the I O rack in which it is housed The module draws 1 3 amperes from this supply This value should be used to find the total current drawn by all modules in an I O rack to determine that the power supply will not be overloaded Do not use Power Supply cat no 1772 P1 prior to Series B 1771 P2 prior to Series B 1774 P1 prior to Series C or 1778 P2 prior to Series C and only with PLC Table 2 F Input Range Select 1771 E3 Input Range Programming Plug Position 4 to 20 mA A C D E 0 to 20 mA A C 1 Insert plug only in the positions listed and remove any plugs from the positions in this group that are not listed Chapter 2 Installation
62. ction Expanders are not connected to the Analog Connect the Expanders to the Analog Input Input Module in accordance with their Module correctly Chapter 2 under Multiplex numbers Cables Power available signal not jumpered on Make the proper jumper connection Analog Input Module s field wiring arm Figure 2 5 There is only one Analog Input Module in the Condition the Analog Input Module and all I O rack and it is conditioned for Master 2 associated Expanders for Master 1 Chapter 2 and all associated Expanders are conditioned under Analog Input Module Master Selection for Master 2 and Expander Master Selection Analog Input Module failure Test Analog Input Module by substitution with a module known to be good and correctly conditioned in accordance with Chapter 2 Expander s front panel green LED is OFF Field wiring arm is not firmly seated on Reseat field wiring arm Expander s edge connector Block transfer does not occur PC processor is programmed to select more Revise program to select the maximum channels than are available number of channels for which the Analog Input Module and associated Expanders are conditioned to service or select less than the maximum number of channels Analog Input Module is conditioned for single Condition Analog Input Module for block transfer transfer Chapter 2 under Module Function Switch SW 1 Figures 2 1 2 2 and 2 3 Ladder diagram program
63. e section titled Expander Output Ranges The 1771 E3 accepts up to six sourcing inputs where the module provides the signal power in the 0 to 20 mA or 4 to 20 mA range The modules reside in the programmable controller s I O rack The Analog Input Module provides the required analog to digital conversion and accommodates the programmable controller PC processor s block transfer or single transfer method of interface Block transfer may be used with the following programmable controllers s Mini PLC 2 15 cat no 1772 LV PLC 2 20 cat no 1772 LP1 LP2 PLC 2 30 cat no 1772 LP3 s Mini PLC 2 cat no 1772 LN3 PLC 3 cat no 1775 L1 L2 Chapter 1 Introduction Single transfer may be used with any Allen Bradley Programmable Controller except the PLC 3 and except the PLC 2 PLC 2 20 and PLC 2 30 when used in a remote I O configuration Single transfer however may be used in all cases when the Analog Input Module is in the calibrate mode 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 configuration Analog Input Module 1771 IF Series B This intelligent I O module accepts up to eight single ended analog input points for which it provides signal conditioning Repeatedly it scans the inputs converts their analo
64. eferred to as the enable EN bit It is set to ON when the rung block is enabled Bit 11307 in this example is referred to as the done DN bit It is set to ON when the block transfer is complete Data Address 040 is the address of the first available timer counter word location in the PC processor s data table Module Address 130 is part of the address of the output image table byte location corresponding to the Analog Input Module Rack 1 Group 3 Chapter 3 Programming Slot 0 in this example This automatically determines the Analog Input Module s output image table and input image table byte addresses 0130 and 1130 respectively on the OUTPUT ENERGIZE instructions attached to the rung block Block Length 08 is the number of value words to be transferred from the Analog Input Module If the block length entry is zero the default value the module will send the maximum number of channels all being scanned File Address 070 is the address of the first data table word location of the block file of locations into which the value words are to be transferred Module Address 130 is stored in Timer Counter Word Location 040 File Address 070 is automatically stored in the Timer Counter Word Location 140 that is 100 above Timer Counter Word Location 040 When the PC processor executes the BLOCK TRANSFER instruction during normal program cycle the instruction directs the processor to generate a control byte and write it i
65. er of 5 through 11 Example 1 To select 1771 IF channel 7 set bit 06 to ON Example 2 To select channel 6 of Expander 2 set bits 05 and 12 to ON 10472 Value Word Status Bits Chapter 3 Programming The digital value word or words that the Analog Input Module forwards to the PC processor when the processor requests single transfer or block transfer can be in one of two formats as shown in Figure 3 7 Either the BCD binary coded decimal format or the straight binary format is DIP switch selected on the Analog Input Module In either case the word consists of a 12 bit value and four status bits Refer to Figure 3 7 The underflow bit set to ON indicates that the value forwarded is equal to or less than zero The overflow bit set to ON indicates that the value forwarded is equal to or greater than full scale The diagnostic bit is set to ON whenever a fault is detected The data valid bit is reset to OFF whenever external power loss is detected or the diagnostic bit is set The diagnostic and data valid bits are detailed in the following section Figure 3 7 Value Word and Status Bits BCD Format 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 2 X102 X10 X109 Underflow Bottom Overflow Full Diagnostic Data Valid Binary Format 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 12 bit Binary Underflow Bottom Ove
66. error Debug program Equipment failure PC processor adapter Isolate system component that has failed and module etc replace it Single transfer does not occur Analog Input Module is conditioned for block Condition Analog Input Module for single transfer transfer Chapter 2 under Module Function Switch SW 1 Figures 2 1 2 2 and 2 3 Ladder diagram program error Debug program Equipment failure PC processor adapter Isolate system component that has failed and module etc replace it 4 2 General Recommended Test Equipment Channel Selection Calibration The Analog Input and Expander Modules are calibrated before leaving the factory It is recommended that the 1771 IF E1 E2 and E3 modules have their calibration checked once a year If the user elects to calibrate the modules the appropriate calibration procedure as outlined in this chapter should be used Test equipment required is listed under Recommended Test Equipment In order to calibrate the modules it is necessary to select individual channel inputs The recommended method of channel selection is described in Channel Selection Precision Voltage Source 10V 0 1 mV resolution minimum Digital Voltmeter 5 1 2 digit 0 01 accuracy minimum Fluke 8300A or Keithley 191 or equivalent Current Source 20 mA Analog Output Module cat no 1771 OF is suitable s Resistor 250 ohms 0 02 1 4 W Extender Board ca
67. eset Value PR 8 Rung 4 Channel 1 Transfer 050 Channel 1 has been selected on the previous scan by Rung 19 IMMEDIATE UPDATE instruction of this Rung 4 directs processor to transfer Channel 1 value word from Analog Input Module to Input Image Table Word Location 112 When Scan Counter 040 s accumulated count equals 001 Scan 2 the remainder of the instructions of this Rung 4 direct the processor to transfer the value word from 112 to Final Storage Word Location 050 provided Data Valid Bit 11217 and Diagnostic Bit 11216 are ON and OFF respectively D 7 Appendix D Application Programs Single Transfer without Expanders PLC D 8 Rung 5 Channel 2 Select 01201 When Counter 040 s accumulated count equals 001 Scan 2 output Image Table Bit 01201 is set to ON thus selecting Channel 2 of the Analog Input Module residing in Rack 1 Group 2 Slot 0 Rung 6 Channel 2 Transfer 051 When Counter 040 s accumulated count equals 002 Scan 3 the Channel 2 value word in Input Image Table Word Location 112 is transferred to Final Storage Word Location 051 provided Data Valid Bit 11217 is ON and Diagnostic Bit 11216 is OFF Channel 2 was selected during Scan 2 by Rung 5 and the resultant asserted value word was transferred from the Analog Input Module to 112 by direction of Rung 4 IMMEDIATE INPUT instruction during Scan 3 Odd Rungs 7 17 Channel 3 8 Select 01202 01207 Rung 19 Channel 1 Select 01200 Same as Rung
68. g values to digital value words and stores the words in on board microcomputer memory The host PC processor transfers the stored value words to its own data table memory The value word format is user selectable Depending on the format selected the 16 bit words are each comprised of four status bits and either a 12 bit binary or three digit BCD value Selection of the binary format provides a resolution of one part in 4096 while selection of the BCD format provides a resolution of one part in 1000 Module specifications are provided in Table 1 E cat no 1771 IF includes Analog Input Module 12 Bit cat no 1771 IFC Field Wiring Arm two each cat no 1771 WB and Product Data Publication 1771 917 The Analog Input Module accommodates any one of seven input ranges each ordered from the factory by specifying a two digit code suffixed to the catalog number Table 1 A Units can be recalibrated in the field with appropriate test equipment to condition them for other than the range ordered Chapter 1 Introduction Figure 1 1 Representative Expanded Configuration Ended Inputs e gee 3 Input prm NI MET 8 Single Module v Ended 1771 lF Inputs Series B 5 Single p c ag MEER La B Backplane Bus to 1 PC Processor e 3 2 3 Expander 7 6 Differential Module PEST MENS Inputs 1771 E2 ENS 6 Note This diagram shows an analog input system that has been expanded from a maximum of 8 input
69. ge bit is used later in the program as a condition before transfer of valid data to final storage words The same procedure is used for all eight Expanders Rungs 40 47 Channel Select Bits 01400 01407 When Channel Counter 230 equals 1 Data Valid Bit 20110 is OFF and the previous channel 01407 in this case is OFF unlatched Then Channel 1 01400 will be latched ON The same procedure is followed for all eight channels E 5 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Rung No START 11417 Data Valid Bit 20110 1 lg 11416 Diagnostic Bit 20005 2 dia KCN 20005 01410 01400 Expander Fault Bits 22000 3 p ea L OFF 20005 01411 01400 22001 4 Ee dE dE L OFF 20005 01412 01400 22002 5 Mic Se ed L OFF 20005 01413 01400 22003 6 he ded L OFF 20005 01414 01400 22004 7 I L OFF 20005 01415 01400 22005 8 LU L OFF 20005 01416 01400 22006 9 P B L OFF 20005 01417 01400 22007 10 js ecce ri L OFF 20117 203 Initialization 230 11 i G PUT 000 002 20117 203 232 12 l G PUT 000 005 20117 203 014 13 Ji H G PUT 000 002 20110 Channel Counter 230 14 i CTU 230 203 d 002 000 232 203 Expander Counter 232 15 a Hk CTU 4 005 000 20110 23015 fi s fe 20005 l 232 204 Expander Select Bits 01410 16 e jH
70. ht Expander Channels 0005 Application Program Test Rungs C p PR Description Introduction Analog Input Module 12 Bit Assembly cat no 1771 IF Series B and Analog Input Expander 12 Bit cat no 1771 El E2 E3 are plug in modules that interface analog input points with any Allen Bradley programmable controller Analog input points are the analog signals from sensors or associated transmitters conveying units of temperature pressure light intensity position etc The Analog Input Module accepts up to eight single ended input points 1 to 5V DC 0 to 10V DC 10V DC 0 to 5V DC 4 to 20 mA 0 to 20 mA or 20 mA The Analog Input Module may be used alone or with associated Expander Modules Figure 1 1 Note that Analog Input Module 12 Bit Assembly cat no 1771 IF Series A not covered in this manual will not accommodate Expanders Expander Modules provide a method of increasing the input point capacity of a system that is more economical in cost as well as in module space than using more Analog Input Modules The 1771 El accepts up to eight single ended input points 5V DC 1 to 5V DC 0 to 10V DC 10V DC 0 to 5V DC 0 to 20 mA 4 to 20 mA or 20 mA The 1771 E2 accepts up to six differential input points same ranges as 1771 E1 For the 1771 E1 E2 certain voltage ranges and current ranges can be intermixed on the same module as detailed in th
71. igure 5 5 Testpoints and Potentiometer Locations 1771 E2 E2 UUU zc IIH To LEDOEEEE EEE s je pe eje Maul Cw 2 T DC CE EON Chapter 5 Calibration O x c ox O E4 1 THROUGH S8 D1 THROUGH D6 N NN Z 8 S Channel 1 Input a Z Channel 1 Input a S j Channel 2 Input sic Channel 2 Input 1 Channel 3 Input er Channel 3 Input zt A Channel 4 Input Ou Channel 4 Input c ot CO Channel 5 Input s _ Channel 5 Input L 41 s 9 Channel 6 Input L 1 C Channel 6 Input 9 S Analog Output 9s COM m S 15V External VR 15V gt Power z 15V COM J Supply 1 7 Not Used cr 10478 Chapter 5 Calibration Offset Adjustment 12 Insert programming plug into E1 Position F 13 Connect Channel 1 Input Terminals 18 and 17 to ground 14 Adj
72. in each CURRENT RANGE position of S1 through S8 that corresponds to an input of 1 through 8 that is required to be a current input If a plug is inserted in each of Positions S1 through S8 all inputs will be conditioned as current inputs Any position of S1 through S8 without a plug will be a voltage input Input Range Selection 1771 E2 The Expander Module may be programming plug conditioned to have any one of five input voltage ranges on all six of its inputs Then ona per channel basis it can be further conditioned for one of three input current ranges as defined below The current range is determined by the voltage range selected To select a voltage range go to Voltage Range below to select a current range go to Current Range below Voltage Range Refer to Figure 2 4 and insert programming plugs into the INPUT RANGE positions given in Table 2 E that correspond to the input voltage range required 2 11 Chapter 2 Installation Current Range The three current ranges available correspond to voltage ranges as follows 1 to 5V DC 4 to 20 mA 0to 5V DC 0 to 20 mA s 5V DC 20 mA Table 2 E input Range Select 1771 E1 E2 Input Range Programming Plug Position 1 to 5V DCI A C D E 0 to 5V DC A C 10V DC No Plugs 0 to 10V DC C 5V DC B 1 Insert plug only in the positions listed and remove any plugs from the positions in this group that are not listed 2 For corresponding cu
73. ingle transfer program for PLC processors Figure D 1 Hardware Configuration Eight Channels Analog Input Module Backplane Bus To PLC 2 Family Processor or PLC Processor or PLC 3 Processor Oo 10 Qm E 0o I 10488 Continuous Update describes a sample program for continuous update Immediate Update describes a sample program for immediate update Overview below provides an overview of the sample program shown in Figure D 2 and detailed in Sample Program below D 1 Appendix D Application Programs Single Transfer without Expanders D 2 OVERVIEW The sample program in Figure D 2 provides one channel select rung and one channel transfer rung for each of the eight channels Each second program scan enables a different channel select rung initiating the Analog Input Module to forward that channel s value word to I O Input Image Table Word Location 112 Each alternate program scan enables the channel transfer rung corresponding to the last channel value word forwarded to 112 Provided Data Value Bit 11217 and Diagnostic Bit 11216 are ON and OFF respectively the value word residing in 112 is transferred to a final storage word location of 050 through 057 SAMPLE PROGRAM The following paragraphs define each of the rungs in the sample program shown in Figure D 2 Rungs 1 2 Scan Counter 040 Counter 040 increments by one count at each program scan and it is reset to count zero by Rung 1
74. ion Figure 2 4 Programming Plug Positions ES 9 O x CE J E O O O L O L 3 2 uu N qo OP eH l Lo O D qe O D L L1 O ee ee ee Ex 18 E 17 16 15 14 13 12 11 10 9 8 7 6 5 L 3 4 L 3 2 L 1 3 L E E S 17930 Analog Input Module Master Selection Refer to Figure 2 3 and set SW 1 Position 1 DIP switch to OFF conditioning the Analog Input Module to be Master Number 1 if there is only to be one master Analog Input Module in the I O rack Set SW 1 Position 4 to ON conditioning the module to be a master module 2 7 Chapter 2 Installation 2 8 If there are to be two master Analog Input Module
75. k Input Ranges e 41to45V DC 0 to 10V DC 10V DC 5V DC 0 to 5V DC 4 to 20 mA 20 mA 0 to 20 mA Accuracy e 10 05 Percent of Range Voltage Mode e 40 07 Percent of Range Current Mode Specifications 1771 E1 Temperature Coefficient e 435 ppm C Voltage Mode e 145 ppm C Current Mode Input Overvoltage Protection e 125V RMS Voltage Mode e 430 mA Current Mode Input Impedance s 10 Ohms Voltage Mode e 250 Ohms Current Mode Backplane Power Supply Current Requirement e 45V DC 150 mA External Power Supply Current Requirements s 15V DC 50 mA e 15V DC 50 mA Table 1 G Inputs per Module e Six Differential Module Location e 17711 O0 Rack Input Ranges e 41to45V DC 0 to 10V DC 10V DC 5V DC 0 to 5V DC 4 to 20 mA 20mA 0 to 20 mA Accuracy e 10 05 Percent of Range Voltage Mode e 40 07 Percent of Range Current Mode Temperature Coefficient e 440 ppm C Voltage Mode e 450 ppm C Current Mode Specifications 1771 E2 Common Mode Voltage e 10V Common Mode Rejection Ratio e 80dB DC to 120 Hz Voltage Mode e 20V pp DC to 120 Hz Current Mode Input Overvoltage Protection e 25V RMS Voltage Mode e 430 mA Current Mode Input Impedance e 10 Ohms Voltage Mode e 250 Ohms Current Mode Backplane Power Supply Current Requirement e 150mA 5V External Power Supply Current Requirements s 15V DC 50 mA e 15V DC 50 mA Chapter 1
76. l of any other intelligent I O modules involved for any grouping limitations DIP switch conditioning required prior to inserting the module into the I O rack is defined in the following paragraphs Figure 2 1 Access to the dual inline package DIP switches is obtained by removing the component side cover of the module Figure 2 2 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 Chapter 2 Installation Figure 2 1 DIP Switch Locations 1771 IF Module Function Switch e d REBE R6 R7 Eer On current Range Selection Off volta ge Switch Assembly Voltage Current Switch Assembly 10457 2 3 Chapter 2 Installation 24 Figure 2 2 Component Side Cover Remove Screws Component Side Cover i O P 10458 Remove Screws Module Function Switch SW 1 Figure 2 1 Figure 2 2 and Figure 2 3 Position 1 If the module is configured as a standalone module then this switch must be set to OFF Position 4 must also be set to OFF If the module is to be a master to the Analog Input Expanders this switch has additional meaning If this is the only master module in the chassis it must be selected to Master 1 OFF If there is another master in the chassis one must be selected to Master 1 and the othe
77. lation and wiring For the Analog Input and Expander Modules the cable specified Belden 8761 or equivalent has a single insulated twisted pair covered along its total length by a foil shield The twisted pair consists of a signal wire and a signal return wire Appendix A Installation Practices The function of a shield is to reduce the effect of EMI induced noise at any point along the cable In order to do this the shield must cover the enclosed pair of wires as completely as possible Most importantly the shield must be properly grounded at one end only The recommended grounding point for the shield is at the I O Chassis The Chassis provides a solid connection to earth ground Steps 1 through 6 describe how this connection is to be made at the Chassis Step 7 describes the protection of the shield at the end of this cable which connects to the user device Follow these procedures with shielded cable 1 Atthe Wiring Arm end of the cable strip and remove about 30 inches of the cable jacket Be careful not to cut the shield 2 Peelthe shield away from the insulated wires The Belden 8761 shield is composed of a strip of foil and a bare stranded wire 3 Twist the shield foil and bare wire together thereby forming a single strand 4 Trim both insulated wires to two inch lengths Then strip approximately 3 8 inch of insulation from the end of each wire The shield strand is left at its full 30 inch length A 5
78. log Input Module s non expanded channel is also selected by Bit OX in the expanded configuration Figure 3 6 demonstrates how bit selection corresponds to channel selection Figure 3 4 General Single Transfer Program without Expanders 0120X RUNGA e 11217 11216 112 050 Runes HHH 10470 3 11 Chapter 3 Programming Figure 3 5 General Single Transfer Program with Expanders 0120X BUNGA E 0121Y RUNGE E 11217 11216 112 050 BUNG C EHHH alur Figure 3 6 Channel Select Word A 1771 IF Series B without Expander Modules 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 8 7 6 5 4 3 2 1 ee eS Not Used Analog Input Channel Number of 1 through 8 Example To select channel 5 set bit 04 to ON B 1771 IF Series B with 8 Expander Modules 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 a 7 e s sj 2 1 8 7 6 5 4 3 2 14 WW S Expander Number of 1 through 8 Analog Input Channel Number of 1 through 8 of Selected Expander Example To select channel 6 of Expander 3 set bits 05 and 12 to ON 3 12 10471 C 1771 IF Series B with 4 Expander Modules 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 4 3 2 1 8 7 6 5 4 3 21 qe SSS Expander Number Analog Input Channel of 1 through 4 Number of 1 through 8 of Selected Expander and 1771 IF Analog Input Channel Numb
79. ms from I O modules restore power tape a copy of the user program if a copy has not previously been made erase user program from PC processor memory and turn off power WARNING Do not attempt calibration without first reading and thoroughly understanding General Recommended Test Equipment Channel Selection and all steps in this procedure 5 3 Chapter 5 Calibration Refer to Figure 5 2 for testpoint locations DIP switch locations and adjustment potentiometer locations Remove the component side cover Figure 2 2 from the module Perform the following steps in the sequence given Refer to Channel Selection for instructions and Recommended Test Equipment for test equipment recommendations Figure 5 2 Testpoints and Potentiometer Locations 1771 IF Module Function Switch Assembly U m pug z 17714F Field Wiring Arms BUBAI s Chan 1 TO Chan 5 O R6 3 Common 1S Common 2 S R7 Chan 2 SI Chan 6 a Common 4 S Common 4 S Chan 3 5 S Chan 7 SIS Common 8 Common CNN Chan 4 71S Chan 8 7G Common 8 S Common 8 Not Used SIC Power Available IG SW 2 15V Common no Jumper W HGH AAHGE 15V DC 119 5V MO SW 3 15V DC a 5V Common 1 III N a a Front View
80. ncrease the high frequency noise immunity caused by external capacitive coupling It should be noted that certain analog sources such as operational amplifiers may require a 1K resistor in series with the analog input The user should consult with the sensor manufacturer prior to the installation of external components NOTE See Publication 1770 980 General Grounding and Field Wiring Practices for Allen Bradley Programmable Controllers for additional information For field wiring external to the control system enclosure conduit should be used to protect the user supplied signal transmission cables against physical damage and EMI Conduits should be made of ferromagnetic material if they run in the vicinity of high power current paths which generate stray electromagnetic fields In non critical areas they can be made of aluminum Coupling between aluminum and ferromagnetic conduits should be made with plastic connectors in order to hold both sections of the conduit at ground potential The conduit should be at earth ground potential wherever possible It should be grounded over its entire length Consult with the National Electric Code Article 250 which describes methods for safely grounding electrical equipment and components Local codes and ordinances dictate which earth grounding method is permissible A 3 Appendix A Installation Practices Acceptable Wire Gauge Shielded Cable A4 Conduits must be dedicated for
81. nder 2 1 Insert an EXAMINE OFF instruction A of Figure E 4 in each of Rungs 43 through 47 This will inhibit selection of Channels 4 through 8 of Expander 2 2 Insert Rung B of Figure E 4 between Rungs 122 and 123 This rung will force the channel counter Rung 14 to skip over unused Channels 4 through 8 of Expander 2 3 Remove unused rungs of 59 through 63 Expander 4 4 Insert an EXAMINE OFF instruction C of Figure E 4 in each of Rungs 46 and 47 This will inhibit selection of Channels 7 and 8 5 Insert Rung D in Figure E 4 between 122 and 123 This rung will force the channel counter Rung 14 to skip over unused Channels 7 and 8 6 Remove unused Rungs 78 and 79 m Appendix E Application Program Single Transfer with Expanders Figure E 3 Less Than Eight Expanders Modifications eta INITIALIZATION ae 1G PUT 000 me ale EXPANDER SELECT 23600 Hem e L 005 232 211 23600 Heb st U 006 23600 20110 20005 EXPANDED STORAGE BITS 20104 Se yi rat e i 23600 EL CHANNEL SELECT LATCH INHIBIT CHANNEL COUNTER PRESET 23600 20110 230 204 210 230 H E em SERT el PUT 001 005 36 Analog Input 8 Channels Backplane Module Analog Expander 1 Bus Cables CH1 lt 1 8 Expander 2 To PLC Processor CH2 lt 1 8 Expander 3 CH3 lt 1 8 Expander 4 CH4 at we 1 8 CH5 X EH of our CH6 lt creme 1 4
82. nent side cover Figure 2 2 from the Expander Module and perform the following steps in the sequence given Refer to Channel Selection for instructions and Recommended Test Equipment for test equipment recommendations Remove JPR 92 Figure 5 6 5 19 Chapter 5 Calibration Figure 5 6 Testpoints and Potentiometer Locations 1771 E3 E1 e eje ego ejo oje oje ej jo ojo ojo oje oje ewe o eje eje oje eje eje of jo ojo ejo ojo eje oj E ge c gt External Power Supply e eje eje eje ejo ojo ej e eje eje eje oje oje ej je eje ojo ojo ojo ej CoC IC 4 10478 JPR 92 5 20 Chapter 5 Calibration 1 Select Channel 7 calibration input Set Analog Input Module DIP Switch SW 1 Positions 4 and 5 to ON Set Switch SW 1 Position 3 to OFF Use a single transfer program Zero Offset Adjustment 2 Connect Calibration Input Test Strip E3 Pin 2 and Test Strip E3 Pin 3 to ground 3 Adjust R1 for 0 0000V 0 1 mV on Test Strip E2 Pin 1 Gain Adjustment 4 Disconnect Calibration Input Test Strip E3 Pin 3 from ground Leave Test Strip E3 Pin 2 connected to ground Apply 10 0000V 40 01 mV to calibration input between ground and Test Strip E3 Pin 3 Adjust R2 for 10 0000V 0 1 mV on Test Strip E2 Pin 1 Common Mode Adjustment 7 10 11 Remove 10 0000V 40 1 mV from Calibration Input Test Strip E3 Pin 3 Disconnect ground from Calibration I
83. ng determines if a block transfer was requested and completed during the I O scan Additionally Bit 16 is examined to assure that no module fault exists If the transfer occurred and no module fault exists Bit 02002 is set data okay B 3 Appendix B Application Program Block Transfer without Expanders B 4 D Rung 2 Block Transfer Flag Clear 02000 Bit 02000 is reset unlatched and will be set if a block transfer request is made this program scan Rung 4 E Rung 5 Final Transfer 150 Based on the fact that Bit 02002 is set and Bit 17 is true 1 the data in Word 050 is transferred to Word 150 Bit 17 is examined to insure that this channel has valid data Word 050 is a buffer for Channel 1 data The data in Word Location 150 may now be used in the program F Rung 6 Final Transfer 151 Each channel of 1 through 4 must have its data buffered This may be accomplished by storing the valid data in another word or preconditioning a rung with a Data Okay Bit 02002 and Data Valid Bit XXX17 The four channels of data are stored according to Table B B Table B B Channels of Data Storage Block Transfer Channel 1 Word 050 Word 150 Channel 2 Word 051 Word 151 Channel 3 Word 052 Word 152 Channel 4 Word 053 Word 153 The read bit in the output word to the module must be set in order for block transfer to occur The simplest way to turn this bit on is to make it the output bit of the rungs The first digit of the
84. ng the first scan after switching from run to program When the rungs are true zeroes are put into Channel Counter 230 Expander Counter 232 and Analog Select Word 014 Rung 14 Channel Counter 230 The Channel Counter will increment when Data Valid Bit 20110 is ON or the channel counter accumulated value equals zero The preset value should equal the maximum number of channels used on the Expanders plus one count reset count The preset value should never be greater than 9 Maximum number of channels on any one Expander is 8 8 Reset Count 9 Appendix E Application Program Single Transfer with Expanders Rung 15 Expander Counter 232 The expander counter will increment when the accumulated value equals zero or when Data Valid Bit 20110 is OFF and Channel Counter Done Bit 03015 is ON or when Diagnostic Bit 20005 is ON The preset value should equal the number of Expanders plus one count to reset total of 9 counts for this example Rungs 16 31 Expander Select Bits 01410 01417 When the accumulated value of the expander counter equals 1 Expander 1 01410 is latched ON When the accumulated value equals 2 Expander 1 01410 is unlatched and Expander 2 01411 is latched ON The same procedure is followed for all eight Expanders Rungs 32 39 Expander Storage Bits 20100 20107 When Expander 1 01410 is selected and Data Valid Bit 20110 is ON and Diagnostic Bit 20005 is OFF Storage Bit 20100 is energized The stora
85. nnel 1 3 Some analog source device output signals are not compatible with this module and therefore require signal 2 Incoming analog signals cannot be tied to ground conditioning devices between their outputs and this module 3 All common terminals are at the same electrical Chassis point within the module 1771 E3 Ground 4 Some analog source device output signals are not N Belden 8761 Cable compatible with this module and therefore require n 5 signal conditioning devices between their outputs and O 18 Channel 1 Lead Analo this module Ge 17 Channel 1 Lead g u Source SO 16 Channel 2 Lead HIG 15 Channel 2 Lead an Qu 14 Channel 3 Lead TER aq 13 Channel 3 Lead aoe Oc 12 Channel 4 Lead 1 When all six channels are not used the channels used must be consecutive beginning OS 11 Channel 4 Lead with channel 1 KV 10 Channel 5 Lead GLE 9 Channel 5 Lead 2 Incoming analog signal sources must be aQ 8 Channel 6 Lead isolated from ground Osc 7 Channel 6 Lead 6 Analog Out 3 Some analog source device output signals O 5 Common are not compatible with this module and KiS 4 15V DC Fi therefore require signal conditioning devices 3 15V DC igure 2 6 petween their outputs and this module H 2 15V DC Common 1 Not Used l 2 17 Chapter 2 Installation Indicators and Fuses 2 18 Refer to Figure 2 5 for external 5V and
86. nning where it left off when it interrupted itself as a result of polling an active status line Block Transfer GET GET Figure 3 3 shows a general method of programming a PC processor for block transfer This is the general format used with the PLC 2 20 and Mini Processor Module Processors Figure 3 3 General Block Transfer Program GET GET 01200 RUNGA c RUNG B x RUNG C d x RUNG D A RUNG E _ x RUNG F d 030 130 01207 BUNG G HiHi 120 050 10469 The Rung G OUTPUT ENERGIZE instruction initiates block transfer Its address 01207 specifies Bit Number 7 of output image table lower byte of Word 012 In this example this output image table word location corresponds to the Analog Input Module in Rack 1 Group 2 Slot 0 Bit Number 7 being set to ON specifies block transfer read For block transfer write Bit Number 6 would be set to ON instead Block transfer read is required to service the Analog Input Module 3 6 Chapter 3 Programming Bit Numbers 0 through 5 of the same output image table upper byte of Word 012 are set to ON or not set to ON to define a six bit binary number that specifies the number of words to be transferred Rungs A through F set all six bits to
87. nput Test Strip E3 Pin 2 Connect Calibration Input Test Strip E3 Pin 2 and Test Strip E3 Pin 3 together Apply 10 0000V 40 1 mV between Test Strip E3 Pins 2 and 3 and ground Adjust R3 for 0 0000V 0 1 mV on Test Strip E2 Pin 1 5 21 Chapter 5 Calibration Offset Adjustment 12 Insert programming plug into E1 Position F 13 Connect Calibration Input Test Strip E3 Pin 2 and Test Strip E3 Pin 3 to ground 14 Adjust R4 for 0 0000V 0 1 mV on output Terminal 6 Reference Adjustment 15 Disconnect Calibration Input Test Strip E3 Pin 2 and Test Strip E3 Pin 3 from each other and disconnect Terminal Test Strip E3 Pin 2 from ground Leave Test Strip E3 Pin 3 connected to ground 16 Adjust R5 for 10 0000V 0 1 mV on Test Strip E2 Pin 2 Input Gain Adjustment 17 Insert programming plug into E1 Position B 18 Apply 5 0000V 40 1 mV to Calibration Input Test Strip E3 Pin 2 19 Adjust R6 for 10 0000V 40 1 mV on output Terminal 6 20 Remove programming plug from E1 Position B 21 Insert programming plugs into E1 Positions A and C 22 Adjust R7 for 10 0000V 0 1 mV on output Terminal 6 23 Remove 5 0000V 0 1 mV from Calibration Input Test Strip E3 Pin 2 24 Connect Channel 1 Input Test Strip E3 Pin 2 to ground 25 Remove programming plug from E1 Position C 26 Insert programming plugs into El Positions D and E 27 Apply 5 0000V 0 1 mV to Test Strip E2 Pin 3 5 22 28
88. nt of Range the input circuit and the control logic Temperature Coefficient Keying e 145 ppm C e 2 4 and 22 24 Input Overcurrent Protection Output to 1771 IF Series B e 120 mA Each input is individually fused e 1t0 5V DC e 0to 10V DC Internal Loop Impedance e 10V DC e 285 ohms e 0to 5VDC Maximum External Loop Impedance e 1 000 ohms for 20 mA The 1 000 ohms is the maximum external loop impedance at which the module can source 20 mA This impedance is also dependant upon the isolated transmitter s specifications Backplane Power Supply Current Requirement Refer to transmitter data sheets for further information e BV DC 150 mA gt PR The module provides six 26V DC two wire sourcing inputs for External Power Supply Current Requirements use with two wire transmitters The 26V DC is derived from 15V DC 200 mA the 30V difference between the 15V and 15V external e 15V DC 200 mA power supply actually 11V and 15V 1 12 General Rack Configurations Installation WARNING To avoid injury to personnel and damage to equipment disconnect and lock out AC power from the controller and system power supplies before installing and wiring modules After a configuration of Analog Input Modules or Analog Input and Expander Modules have been planned in accordance with the capabilities defined in Chapter 1 and within the limitations described in Rack Configurations physical installation can begin It con
89. nto Output Image Table Byte Location 0130 The control byte consists of the block length 08 and the direction indicator 7 which is also the enable EN bit When the PC processor subsequently updates the I O modules by scanning the output image table it transfers the control byte to the Analog Input Module and then continues updating the I O modules When ready for block transfer the Analog Input Module responds to the control word by activating a hardware status line The PC processor polls the status line every I O scan The first time the status line is active when polled the processor responds by searching the data table for a location that contains Module Address 130 It will find the module address in Timer Counter Word Location 040 where it previously stored it Having found the location containing the module address it adds 100 to the address to calculate the address of the location where it previously stored the file address Timer Counter Word Location 140 The processor then reads File Address 070 out of Location 140 File Address 070 points to the first word location of the block file into which the value words are to be transferred Block transfer then proceeds transferring the eight value words out of the Analog Input Module into the block file pointed to by the File Address 070 When block transfer is 3 5 Chapter 3 Programming complete the processor sets the done DN bit and returns to normal I O scan begi
90. of points between 48 and 64 All inputs of an Expander Module and Analog Input Module need not be used The PC processor s transfer interface routine can and must be programmed to ignore unused inputs Whenever an Expander is added to the configuration either six or eight new inputs are made available but one input of the Analog Input Module is used to accept the multiplexed output of the added Expander Adding a 1771 E1 therefore results in a realization of seven additional inputs Expander Output Ranges The 1771 El 1771 E2 and 1771 E3 Expander Modules may be programming plug conditioned for any multiplexed analog output range of 10V DC 0 to 5V DC 0 to 10V DC or 1 to 5V DC regardless of the ranges selected for the analog input points of the same module This feature permits the user to accommodate the Expander to the voltage range for which the Analog Input Module inputs are conditioned and calibrated If the Analog Input Module is conditioned for a current range it must be changed to a voltage range If it is conditioned for the 4 to 20 mA or 0 to 20 mA input range it can be conditioned for the corresponding voltage input range 1 to 5V DC or 0 to 5V DC respectively without recalibration If the Analog Input Module is conditioned for the 20 mA input range however it will need to be conditioned for one of the four voltage ranges Table 1 B and recalibrated as described in Chapter 5 Changing the output range doe
91. output address is zero because it is in the output image table The next three digits are the module s rack address rack number and group The rack address must be the same as the address loaded into the lower GET The last digit 7 is the bit in the word that signals the module to begin the transfer For this module the Bit 7 is the signal for a read operation Appendix B Application Program Block Transfer without Expanders There should be one program rung for each module One word should be left empty or set to 000 between the last block transfer lower GET the GETs containing the module s address and the first use of the timer and counter area for normal operations timers counter etc Also the last four bits Bits 14 through 17 of the loadmap GETs should always be 000 Since the BCD format uses only the first 12 bits this will normally be the case B 5 General Appendix Application Program Block Transfer with Expanders This appendix provides a workable block transfer application program for programming a PLC 2 30 Mini PLC 2 15 or PLC 3 Programmable Controller to access an Analog Input Module that has associated Expander Modules The Sample Program that follows is designed to accommodate the 22 channel hardware configuration shown in Figure C 1 Overview provides an overview of the principles involved in the Sample Program detailed below Figure C 1 Hardware Configuration 22 Ch
92. p 1a above the Analog Input Module automatically sets all Expanders to Channel 1 The Analog Input Module will not perform analog to digital conversions self scan while in this calibrate mode Individual channels can then be selected by using the single transfer program defined in Steps 1b and 2 above If the user is not going to calibrate for Expander Module input current ranges individual channel selection is not required If there is just one Analog Input Module in the I O rack it and its Expanders must be conditioned for Master Number 1 If there is a second Analog Input Module in the I O rack it and its Expanders must be conditioned for Master Number 2 Chapter 5 Calibration Figure 5 1 Channel Select Program A To select 1771 IF Series B Channels OABOX FS N IAB ob WWW A 1771 IF Rack Number B 1771 IF Group Number X Bit Number of 0 through 7 corresponding to channel of 1 through 8 WWW Displays value of value word when 1771 IF is not in calibrate mode B To select 1771 E1 E2 E3 Channels OABOX __ A KH _ OABIY A 1771 IF Rack Number B 1771 IF Group Number X Bit Number of 0 through 7 corresponding to expander channel of 1 through 8 Y Bit Number of 0 through 7 corresponding to expander number of 1 through 8 10475 Calibration Procedure 1771 IF To avoid any unwanted machine motion turn off power to programmable controller and I O racks disconnect all field wiring ar
93. points without Expanders to a maximum of 25 points with Expanders Five additional Expanders would provide 25 to 35 1 additional points lt c2 3 SRV 6 Sourcing 1771 E3 UE re Inputs ES 10456 Chapter 1 Introduction Application Expander Modules 1771 E1 E2 E3 The Expander Module accepts up to either six or eight analog input points for which it provides signal conditioning It multiplexes the input points onto a single output which connects via a user installed cable directly to one analog input channel of an associated Analog Input Module The Analog Input Module communicates digitally with the Expander via part of the backplane thus controlling the multiplexing function by sequentially addressing each expander input channel In this way the Expander Modules provide input point capacity expansion for the Analog Input Module Input point capacity may be expanded from a maximum of eight points without Expanders to a maximum of 64 points with Expanders The Analog Input Module can function with up to eight Expanders The 1771 E1 accepts up to eight single ended inputs the 1771 E2 up to six differential inputs and the 1771 E3 up to six two wire sourcing inputs Specifications for these modules are provided in Table 1 F through Table 1 H Cat no 1771 El includes Analog Input Expander 12 Bit Eight Single Ended Inputs cat no 1771 E1C Field Wiring Arm cat no 1771 WF and Product Data Publication 1771
94. r to Master 2 To select Master 2 set this position to ON NOTE Check the selection of Position 4 master standalone Position 2 This switch set to ON selects three digit BCD format for value words Set to OFF it selects 12 bit binary format Position 3 This switch set to ON conditions module to accommodate block transfer interface set to OFF it conditions module to accommodate single transfer interface Conditioning Options 1771 E1 E2 and E3 Chapter 2 Installation Position 4 If there are no expanded Analog Input Modules this switch must be set to OFF If the module is being used with Expander Modules this switch must be set to ON conditioning it as a master module Position 5 Set to OFF for normal operation set to ON for calibration Voltage Current Switch SW 2 Figure 2 1 All positions of this switch assembly are set to ON if the module is to be conditioned for current range inputs All positions are set to OFF for voltage range inputs Range Selection Switch SW 3 Figure 2 1 The ten positions of this switch assembly are set in accordance with Table 2 A for the input current or voltage range required for the eight inputs If a change is made in these switch settings recalibration Chapter 5 is required Programming plug conditioning required prior to inserting the modules into I O rack slots is defined in the following paragraphs Access to the programming plug positions is obtained by removing the
95. r with Expanders Channel 1 Expander 1 diagnostic bit and Bit 30017 Channel 1 Expander 1 data valid bit The file length file to file move instruction should equal the number of inputs to that Expander and the rate per scan should equal the file length Rungs 9 11 File to File Move 032 034 These three rungs perform the same operations as Rung 8 except that Rung 9 is associated with Expander 2 Rung 10 is associated with Expander 3 and Rung 11 is associated with Channels 4 through 8 on the Analog Input Module Rungs 12 15 Display Only 02001 02004 These rungs have no affect on program operation They provide a means of displaying the final valid analog values Rung 12 displays Expander 1 analog values Rung 13 displays Expander 2 analog values Rung 14 displays Expander 3 analog values Rung 15 displays analog values from Channels 4 through 8 on the Analog Input Module C 5 General PLC 2 Continuous Update Appendix Application Programs Single Transfer without Expanders This appendix provides three workable single transfer application programs for programming a PC processor to access an Analog Input Module that has no associated Expander modules The sample programs in PLC 2 and PLC are designed to accommodate the full complement eight channel hardware configuration shown in Figure D 1 PLC 2 describes two single transfer programs for PLC 2 Family Processors and PLC describes one s
96. ransfer did not occur It may not be possible however to visually detect the status of Bit 7 on the screen of an industrial terminal since depending on application programming block transfer may occur too frequently to activate the screen In this case Chapter 3 Programming additional program rungs may be used to allow Bit 7 of the input and output image table bytes to start and stop a watchdog timer that upon timing out latches a flag bit Refer to Appendix C for application programming that uses a watchdog timer For Analog Input Modules being interfaced via single transfer the Analog Input Module will illuminate its front panel DIAGNOSTIC LED and set its diagnostic status bit The user can detect the diagnostic bit by examination of the input image table word corresponding to the Analog Input Module All other bits in the value word will be reset to OFF Normal Operation The following checks and responses can occur after the Analog Input Module has passed the initialization check Limited Memory Check After the Analog Input Module has completed each scan of its expanded and non expanded analog input channels it performs a limited check on its RAM and ROM memory If this check reveals a fault the Analog Input Module responds as described under Response above Expander Scan Check If the Analog Input Module fails to communicate with an Expander Module that was present during power up the Analog Input Module pe
97. rflow gt Full Diagnostic ON for Fault Data Valid ON for Data Valid 10473 3 13 Chapter 3 Programming Diagnostics The following paragraphs define the self diagnostics performed by the Analog Input Module at power up and during normal operation Initialization At power up the Analog Input Module checks its RAM and ROM memory counts its unexpanded channels Expander Modules and channels per Expander Faults If the above checks reveal any of the following faults the Analog Input Module will respond as described under Response below 1 Memory error detected 2 Expander Module missing not numbered sequentially beginning with 1 3 Expander Module incorrectly programming plug conditioned 4 Expander Module output connected to wrong Analog Input Module input 5 Another intelligent module is tying up the bus for an overly long period of time 6 Expander Module diagnostics fail Response For Analog Input Modules being interfaced via block transfer and with respect to Steps 1 and 2 above the Analog Input Module will illuminate its front panel DIAGNOSTIC LED and halt on board microcomputer program run stops No block transfer will occur With respect to Steps 4 5 and 6 above scan continues Diagnostic bits are set for bad channels This can also be detected by the user by examination of Bit 7 in the input image table word corresponding to the Analog Input Module Bit 7 will be OFF if block t
98. rforms the following It sets the diagnostic status bit to ON and resets all other bits in the value word to OFF for each value word corresponding to each input of the Expander or Expanders affected The Analog Input Module also illuminates its front panel DIAGNOSTIC LED and continues to service all non expanded inputs Incorrect Channel Select Word Single Transfer If a non valid channel select word is transferred to the Analog Input Module the Analog Input Module responds by resetting all bits of the corresponding value word to OFF If another fault has been detected as well the diagnostic status bit will be set to ON Chapter 3 Programming Incorrect Control Word Block Transfer If a non valid control word is transferred to the Analog Input Module the Analog Input Module responds by inhibiting the block transfer currently in progress 3 16 Troubleshooting General Table 4 A lists the probable causes and corrective actions for each of a number of common trouble indications due to hardware failure incorrect programming or incorrect installation of Analog Input Module installations with Expander Modules NOTE The red LED on the front panel of the Analog Input Module will be on in the standalone mode if one or both of the following conditions exist 1 Analog Input Module component failure 2 communication fault ladder diagram programming error Table 4 A Troubleshooting o Indication Probable Cause Correc
99. rminals on field wiring arms are at the same eletrical point within the Analog Input Module 4 Some analog source device output signals are not commpatible with the Analog Input Module and therefore require signal conditioning devices between them and the Analog Input Module 10460 2 13 Chapter 2 Installation Figure 2 6 Analog Input Module with Expanders Multiplex Connections Expender Module Field Wiring Arm prapa npu Moria PAg iimg am Side View 1771 E1 E2 and E3 C Channel 1 E ty Analog Common 5 1 S Came 5 Bel 2 Anal Gu id Channel 2 S S l 9 SUA om Cable Analog Analog C IO 3C gt Channel 6 ne Figure Source TaS Sommen 4 Q 4 CJ C Analog Comm a 2 4 om Floating A Channel 3 d RM 7 9 Channel 7 A Floating Analog Common R BI Analog Comm NS Analog ou V n Ais GLS L TI H Channel 8 GIL Common 15V DC C RIL 8 CJ Analog Comm O n oe ommon wot Used 9 C9 IS Power Available OS i Ade 15V DC i idc Power Available Q 15V DC 15V DC HIC NIS Comm 15V DC Comm ad mc mo 45V DC Not A b S
100. rolled EMI sources such as high frequency welding equipment large AC motors DC commutation machines etc are examples In these applications all possible sources of EMI should be suppressed To minimize the effects of EMI group Analog Input and Expander Modules together within an I O rack whenever possible Avoid placing Analog Input and Expander Modules close to AC modules or high voltage DC modules A metal enclosure helps protect against electromagnetic radiation To increase the operating margin in EMI filled environments however it is recommended that suppression of EMI generators be provided Potential EMI generators include inductive loads such as relays solenoids and motors and motor starters when they are operated by hard contacts such as pushbuttons and selector switches In the case of reversing motor starters hard contacts are wired in to make each starter electrically as well as mechanically interlocked In this case suppression is needed at the device because of the hard contacts in the circuit with the load Suppression for EMI generators may be necessary when these types of loads are connected as output devices or when connected along with the same AC line which powers the Analog Input and Expander Modules Suggested EMI suppression for small AC devices 1 e relays solenoids and starters up to Size 1 is given in Figure A 1 Larger contactors of Size 2 and above need in addition to the RC network a parallel
101. rrent ranges refer to Input Range Selection 1771 E1 2 12 Chapter 2 Installation Figure 2 5 Analog Input Module Connections Analog Input Module Field Wiring Arm Belden 8761 Cable Front View 17714F Channel 1 ee ee es ean Analog Common 1S IS Channel 5 y W 2I 2 G Analog Comm I Floating Channel 2 JO SIS H Channel 6 e Analog Common 4G 4 CJ Analog Comm Chassis Channel 3 IO 9 CJ H Channel 7 Ground Analog Common RI 6 C9 Analog Comm Channel 4 18 71S gt Channel 8 Analog Common lS 8 C9 M Analog Comm t Mo Not Used 9 Q IKN Power Available RDG 11 10CJ Power Available Comm errs Ot HS 5V DC Tec PN 5V DC Common External g Power F Supply 5V DC Common 5V DC 1 If external power supply has a power available output connect it to the power available input of the Analog Input Module If the supply does not have a power available output use a jumper to short the power available terminals of the field wiring arm as shown 2 When all eight channels are not used the channels used must be consecutive beginning with channel 1 3 All common te
102. rt of the initial scan up to Rung 4 the upper branch of Rung 3 sets Output Image Table Bit 01000 to ON selecting Channel 1 On the following scans Rung 3 is controlled by the lower branch Rung 4 Initialization Complete 32200 See Rungs 1 2 Rung 5 Channel 8 Control Unlatch 20007 This rung unlatches the control bit 20007 corresponding to the previously transferred channel Channel 8 This bit is already OFF during the initial scan D 9 Appendix D Application Programs Single Transfer without Expanders Figure D 4 Sample Program Single Transfer 8 Channels PLC Rung No START 32200 0201 Initialization 0200 1 lt H a PUT 000 000 32200 0201 Initialization 0010 2 J H G PUT 000 000 32200 11016 Channel 1 Select 01000 3 ie LL OFF 20007 11017 CE oer Initialization Complete 32200 4 01000 Channel 8 Control Unlatch 20007 5 3 irl LU j 01000 11017 11016 Channel 1 Control 20000 6 L up uM L OFF 20000 01000 0110 Channel 1 Transfer 0300 7 ia PUT 000 000 20000 Channel 1 Select Unlatch 01000 8 TE U 20000 11017 Channel 2 Select 01001 9 d qs th y OFF 01001 Channel 1 Control Unlatch 20000 10 U 01001 11017 11016 Channel 2 Control 20001 11 dust b y OFF 20001 01001 0110 Channel 2 Transfer 0301 12 P a PUT 000 000 20001 Channel 2 Select Unlatch 01001 13 E U 20000 11017 Channel 3 Select 01002 14 A L L OFF 0
103. s set the SW 1 Position 1 on one to OFF designating that module as Master Number 1 and set SW Position 1 on the other to ON designating that module as Master Number 2 Set SW 1 Position 4 to ON on both modules conditioning them to be master modules Expander Master Selection Refer to Figure 2 4 and insert a programming plug into MASTER 1 if the Expander Module is to be used with an Analog Input Module conditioned to be Master Number 1 see Analog Input Module Master Selection above If the Expander Module is to be used with an Analog Input Module conditioned to be Master Number 2 see Analog Input Module Master Selection above insert the programming plug into MASTER 2 Module Selection Number the Expander Modules associated with each master Analog Input Module Number them consecutively from 1 through 8 or through whatever the highest number will be A space is provided on the front panel of each Expander Module on which to write the number There can be no more than eight Expander Modules associated with one expanded Analog Input Module Refer to Figure 2 4 and insert programming plugs into MODULE M2 MI and MO positions for each Expander Module Each of three plugs is inserted one each under M2 M1 and MO in either the O position or 1 position in accordance with the number of the Expander Module and Table 2 B Chapter 2 Installation Table 2 B Module Select Expander Programming Plug Position Number
104. s not require that the Expander Module be recalibrated 1 5 Chapter 1 Introduction Expander Input Ranges The 1771 El or 1771 E2 Expander Module may be conditioned so that its inputs eight single ended or six differential respectively will all have one of the following voltage ranges 5V DC 10V DC 0 to 5V DC 0 to 10V DC or 1 to 5V DC Then on a per channel basis 5V DC inputs may be further conditioned for 20 mA range 0 to 5V DC inputs may be further conditioned for 0 to 20 mA range or 1 to 5V DC inputs may be further conditioned for 4 to 20 mA range That is the Expander can have a mixture of corresponding voltage and current input ranges The 1771 E3 Expander Module may be conditioned so that all of its six sourcing inputs have a range of either 0 to 20 mA or 4 to 20 mA Changing the input ranges does not require that the Expander Module be recalibrated Operating Power The Analog Input Module receives 5V DC operating voltage from the backplane of the I O rack in which it resides It draws 1 3 amperes from this supply The module also requires 5V DC and 15V DC from an external power supply It draws 150 mA 45V DC 60 mA 15V DC and 60 mA 15V DC from this supply Specifications for this external DC power source are listed in Table 1 D Power Supply cat no 1770 P1 is available as an external power source for the Analog Input Module This supply operates on either 120V AC or 220 240V AC
105. ser program from programmable controller memory and turn off power Refer to Figure 5 5 for Testpoint Locations Programming Plug Positions Adjustment Potentiometer Locations and Test Setup 5 13 Chapter 5 Calibration Remove the component side cover Figure 2 2 from the Expander Module and perform the following steps in the sequence given Refer to Channel Selection for instructions and Recommended Test Equipment for test equipment recommendations 1 Select Channel 1 input Set Analog Input Module Switch SW 1 Positions 4 and 5 to ON Set Position 3 to OFF Remove all programming plugs from E1 input output range and remove all plugs from E4 D1 through D6 Zero Offset Adjustment 2 Connect Channel 1 Input Terminals 18 and 17 to ground 3 Adjust R1 for 0 0000V 0 1 mV on Test Strip E2 Pin 1 Gain Adjustment 4 Disconnect Channel 1 Input Terminal 17 from ground Leave terminal 18 connected to ground 5 Apply 10 0000V 0 1 mV to Channel 1 Input Terminal 17 6 Adjust R2 for 10 0000V 40 1 mV on Test Strip E2 Pin 1 Common Mode Adjustment 7 Remove 10 0000V 0 1 mV from Channel 1 Input Terminal 17 8 Disconnect ground from Channel Input Terminal 18 9 Connect Channel 1 Input Terminals 18 and 17 together 10 Apply 10 0000V 0 1 mV between Channel Input Terminal 18 and ground Terminal 5 11 Adjust R3 for 0 0000V on Test Strip E2 Pin 1 E1 F
106. signal transmission cables However cables carrying other low level signal carrying cables such as remote I O RS 232 C and Program Panel interconnect cables may also be placed in these conduits Where a number of RS 232 C data transmission cables run in the same conduit they should be loosely arranged and no tight spots should occur These conduits with signal transmission cables should maintain a minimum distance of six inches from 480 volt power lines with a short circuit ampacity of 500 amperes This minimum distance should be extended to ten inches for 1 000 amperes Increments of six inches should be used for each additional 2 000 amperes If data transmission conduits must cross power feed lines carrying 480 volts or higher they should do so only at right angles Field Wiring Arms are designed for 14 AWG stranded maximum maximum possible current in each power and common wire Observe all local electrical codes which dictate the maximum current allowable for each wire size Current above these maximum ratings may cause wiring to overheat which may damage equipment CAUTION It is the user s responsibility to calculate the For installation and wiring of all modules power must be disconnected from both the system power supply and any user source to I O devices WARNING To avoid injury to personnel and damage to equipment disconnect and lock out AC power from the controller and system power supplies before module instal
107. sists of selecting the options as described in Conditioning Options 1771 IF and Conditioning Options 1771 E1 E2 and E3 inserting the modules into their I O rack slots and making connections to the modules field wiring arms as per Connections and then when the rack configuration is firm keying the module slots as specified in Keying 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 Expander Modules must be housed in the same I O rack with the associated Analog Input Module Avoid placing either module close to AC or high voltage DC modules The Analog Input Module requires two adjacent slots in the I O rack and the two slots used must be of the same group It cannot straddle two groups The Expanders require one slot each Analog Input Module cat no 1771 IF Series B can be conditioned to function as master or standalone When the 1771 IF is expanded uses associated Expander Modules it must be conditioned as a master A master is here defined as an intelligent I O module that communicates with associated Expander Modules via the backplane When non expanded the Analog Input Module is conditioned as a standalone No more than two master 1771 IFs may reside in one I O rack Also the number of master and standalone
108. st Equipment for test equipment recommendations 1 Select Channel 1 input Set switch SW 1 Position 3 to OFF Set switch SW 1 Positions 4 and 5 to ON Use a single transfer program Offset Adjustment 2 Insert EI programming plug into Position F Make sure no other plugs input output are inserted Remove E4 Plugs S1 through S8 3 Connect Channel input Terminal 18 to ground 4 Adjust R4 for 0 0000V 0 1 mV on output Terminal 6 Reference Adjustment 5 Adjust R5 for 10 0000V 40 1 mV on Test Strip E2 Pin 2 Figure 5 3 Chapter 5 Calibration Testpoints and Potentiometer Locations 1771 E1 E1 E 5 L 4 fe B Q O OO m N v E QU m Ls EJ o ull E B O O S C Exi RU Irun n Iran E 17 ES 16 15 14 18 12 11 10 9 R 8 R 7 R 6 le 5 N Ei Cas 4 B I 3 L J U 2 F R re M 7 b r S 2 7 O E4 O S1 THR
109. t no 1771 EX Not absolutely necessary if user has easy access to I O rack Potentiometer Sealant Torque Seal Organic Products P O Box 928 Irving Texas 75060 Alignment Tool PN 35F616 Newark Electronics 500 North Pulski Road Chicago Illinois 60624 Industrial Terminal For programmable controller processor used Required for channel select program entry and monitor Required only to calibrate current ranges of 1771 E1 E2 and E3 During the course of performing the calibration procedures outlined in this chapter it is necessary to select individual channels This is accomplished as follows 5 1 Chapter 5 Calibration 5 2 1 When setting up for calibration a Refer to Figure 5 2 and set the Analog Input Module s function switch SW 1 Position 5 to ON for calibrate and Position 3 to OFF for single transfer b Enter the appropriate program defined in Figure 5 1 and enter OABOX AND 1AB for calibrating 1771 IF or OABOX and OABIY for calibrating Expanders 2 To select a channel during the calibration procedure adjust X and Y as required During normal operation of the Analog Input and Expander Modules the Expander channels are continuously scanned by the Analog Input Module This condition is not suitable for calibration of the Expander Module which requires that the Expander be fixed on a specific channel When the Analog Input Module has been DIP switch selected as described in Ste
110. table for all eight channels as a unit thus all channels function with the same input current range Chapter 1 Introduction Table 1 D External DC Power Requirements Specifications 5 Volts 15 Volts 15 Volts Voltage Tolerance 5 1 1 Regulation Type Series Series Series Line Regulation for 10V AC Input Change 02 02 02 Load Regulation 04 02 02 Ripple RMS 2 mV 2 mV 2 mV Overvoltage Protection 7 volts 18 volts 18 volts Current Limit Percent of Full Load 125 125 125 Current per 1771 IF 150 mA 60 mA 60 mA Current per 1771 E1 E2 0 50 mA 50 mA Current per 1771 E3 0 200 mA 200 mA Chapter 1 Introduction Table 1 E Specifications 1771 1F Inputs per Module e Eight Single Ended Module Location e Bulletin 1771 I O Rack 2 Adjacent Module Group Slots Input Voltage Ranges Nominal e 010 45V DC e Oto 10V DC e 10to 10V DC e Oto BV DC Input Current Ranges Nominal e 44to 20 mA e Oto 20mA e 2010 20 mA Digital Resolution e Selectable 3 Digit BCD or 12 Bit Binary Input Overvoltage Protection e 35V DC e 25V RMS Sinusoidal Input Impedance e 10 Ohms for Voltage Ranges e 250 Ohms for Current Ranges BCD Output to Processor e 000 to 999 for Any Input Range Binary Output to Processor e 0000 to 409546 for Any Input Range Power Supply Current Requirement e 1 3 Amps Ambient Temperature Rating e Operational 0 C to 60 C 32 F
111. tive Action Incorrect data in final storage word locations Severed or disconnected input cable Repair replace appropriate cable or cables associated with the affected channel or Chapter 2 under Connections channels Output range of Expander does not match Condition Expander output to match Analog Analog Input Module s input range Input Module input Chapter 2 under Output Range Selection Analog Input Module is conditioned for BCD Condition the Analog Input Module for the instead of binary or for binary instead of BCD desired value word format of BCD or binary Chapter 2 under Module Function Switch SW 1 Figures 2 1 2 2 and 2 3 Input range of Expander does not match Condition Expander to match actual range of range of actual input point input point Chapter 2 under Input Range Selections 1771 E1 E2 and E3 4 1 Chapter 4 Troubleshooting m con Probable Cause Corrective Action Analog Input Module s front panel Expanders are not conditioned in accordance Condition Expanders for their numbers DIAGNOSTIC LED is ON and the Expander s with their numbers Chapter 2 under Module Selection front panel green LED is ON Analog Input Module or one or more Condition Analog Input Module and Expanders is not conditioned correctly for Expanders all for either Master 1 or Master 2 Master 1 or Master 2 Chapter 2 under Analog Input Module Master Selection and Expander Master Sele
112. to 140 F e Storage 40 C to 85 C 40 F to 185 F Relative Humidity Rating e 5 to 95 without Condensation Electrical Isolation s 1 500V RMS Transient e Isolation is achieved by optoelectronic coupling between the input circuit and the control logic Cable Type e Belden 8761 or Equivalent 1 10 spen for the A D Converter The A D Analog to Digital Converter has the following specifications Resolution e Selectable 3 Digit BCD 000 999 or 12 Bit Binary 0000 4095 0 Linearity at 25 C e 10 0596 of Full Scale Relative Accuracy Offset at 25 C e 10 0596 of Full Scale Gain at 259C e 410 0596 of Full Scale Absolute Accuracy Which Includes Linearity Offset and Gain at 25 C e 10 196 of Full Scale 41 2 LSB Stability Drift Over the Full Temperature Range Temperature Coefficient e 4145 ppm C Inaccuracy Due to Internal Electrical Noise e 3 Sigma Noise e 0 0596 RMS of Full Scale Input Filter Frequency Response e DC to 12 KHz 3 dB Point Internal Scanning Rate Eight Channels e 5 msec without Expanders Maximum Channel Sampling Rate e 1 3 ms per Channel Worst Case with Expanders AID Settling Time per Channel e 200 microseconds Actual A D Sample Conversion Time e 25 Microseconds Recalibration Time e Calibration should be checked at six month intervals to maintain specified accuracy Table 1 F Inputs per Module e Eight Single Ended Module Location e 1771 I O Rac
113. treate S CH7 ash CH8 ax expander 10504 E 17 Appendix E Application Program Single Transfer with Expanders Figure E 4 Less Than Eight Expander Channels Modifications 01411 A m am 01411 20110 230 207 214 230 B H e eh cl PUT 004 009 01413 c s t 01413 20110 230 212 214 230 D H EF F ieF A ict PUT 007 009 Analog Input 8 S Backplane Module Analog Expander 1 Channels Bus Cables CH1 lt lt lt 1 8 Expander 2 To PLC Processor CH2 x lt 1 3 Expander 3 CH3 1 8 Expander 4 CH4 r 1 6 CH5 X Group of four CH6 channels 1 4 oir CH8 expander 10505 E 18 Appendix Application Program Test Rungs General The rungs shown in Figure F 1 may be used to test the compatibility of the Expander Module and Analog Input Module after initial installation In this example program the Analog Input Module is located in Rack 1 Group 4 The first rung selects Expander 1 the second rung selects Channel 1 and the third rung transfers Expander 1 Channel 1 analog data to Storage Word 300 Figure F 1 Sample Program Test Rungs START 114 300 563 563 F 1 N Rockwell Automation Allen Bradley a Rockwell Automation Business has been helping its customers improve pro ductivity and quality for
114. ust R4 for 0 0000V 0 1 mV on output Terminal 6 Reference Adjustment 15 Disconnect Channel 1 Input Terminals 18 and 17 from each other and disconnect Terminal 18 from ground Leave Terminal 17 connected to ground 16 Adjust R5 for 10V on Test Strip E2 Pin 2 Input Gain Adjustment 17 Insert programming plug into E1 Position B 18 Apply 5 0000V 40 1 mV to Channel 1 Input Terminal 18 19 Adjust R6 for 10 0000V 40 1 mV on output Terminal 6 20 Remove programming plug from E1 Position B 21 Insert programming plugs into E1 Positions A and C 22 Adjust R7 for 10 0000V 0 1 mV on output Terminal 6 23 Remove 5 0000V 0 1 mV from Channel 1 Input Terminal 18 24 Connect Channel 1 Input Terminal 18 to ground 25 Remove programming plug from E1 Position C 26 Insert programming plugs into E1 Positions D and E 27 Apply 5 0000V 0 1 mV to Test Strip E2 Pin 3 28 Adjust R8 for 7 5000V 0 1 mV on output Terminal 6 5 16 29 30 31 32 33 Chapter 5 Calibration Remove 5 0000V 0 1 mV from Test Strip E2 Pin 3 Insert programming plug into E1 Position C Disconnect ground from Channel Input Terminal 18 Apply 5 0000V 0 1 mV to Channel 1 Input Terminal 18 Adjust R9 for 10 0000V 0 1 mV on output Terminal 6 Output Gain Adjustment 34 35 36 37 38 39 40 41 42 43 44 45 46 Remove programming plugs from
115. varistor for transient voltage limitation Figure A 2 Three phase motors are transient suppressed by providing discharge networks across all phases Figure A 3 DC relays are suppressed by diodes Figure A 4 Best results are achieved when the EMI suppressing networks are connected as closely as possible to the device A 1 Appendix A Installation Practices Figure A 1 Typical Interference Suppression for Small Apparatus 120V AC Allen Bradley Cat No 1691 N2 _______ 4 10479 Figure A 2 Typical Interference Suppression for Large Apparatus 120V AC d a e _ Q iie e e Electro Cube Inc 9 Cat No RG 1676 14 _________ TAE Figure A 3 Typical Interference Suppression for Three Phase Apparatus 230 460V AC e i R 2 e e UA j 5X e 4 e 1 e 3 Phase Motor Electro Cube Inc Cat No RG 1676 13 10481 A 2 Conduit Considerations Appendix A Installation Practices Figure A 4 Typical Interference Suppression for DC Relays VDC 10482 Adherence to the previous recommendations should minimize the EMI In extreme cases however the addition of a 0 01 uF ceramic capacitor to the input terminals of each used channel of the Analog Input or Expander Module will i
116. y 01416 20110 20005 20106 38 Jm l 01417 20110 20005 20107 39 Es 20110 230 204 01407 Channel Select Bits 01400 40 Ji t l 4 1 4 E 002 001 OFF 20110 230 205 01400 01401 41 Le l e H H L L 002 002 ON 20110 230 206 01401 01402 42 l e H Mit L_ 002 009 OFF 200110 230 207 01402 01403 43 jJ t 4 1 4 LL T 002 004 OFF 20110 230 210 01403 01404 44 l e H H L 002 005 OFF 20110 230 211 01404 01405 45 l e H Mit 002 006 OFF 20110 230 212 01405 01406 46 iV Seto TH LL T 002 007 OFF 20110 230 213 01406 01407 47 jf le H j l L 002 008 OFF 20100 01400 114 Final Value Word Storage 400 48 j es PUT 20100 01401 114 401 49 a PUT 20100 01402 114 402 50 Ha PUT 000 962 20100 01408 114 403 51 Ha PUT 20100 01404 114 404 52 Ha PUT 20100 01405 114 405 53 Ha PUT 20100 01406 114 406 54 yj p ee PUT E 8 Appendix E Application Program Single Transfer with Expanders Figure E 2 Sample Program Single Transfer 64 Channels PLC Continued Rung No 20100 01407 114 407 55 Hae PUT 20101 01400 114 410 88 j EI L8 PUT 000 ol 20101 01401 114 411 57 Ha PUT 000 093 20101 01402 114 412 98 J c18 PUT 000 295 20101 01403 114 413 59 Js b LG PUT

1771-6.5.2, Analog Input System User Manual

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