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Operational Rule for Programming Programmable Logic Controllers.

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Presentation on theme: "Operational Rule for Programming Programmable Logic Controllers."— Presentation transcript:

1 Operational Rule for Programming Programmable Logic Controllers

2 Your comfort level with your responses to the following 3 question assessment tool should indicate if the presentation that follows will increase you knowledge base on the topic outlined by the questions in this tool. Pre-presentation Self Assessment Activity

3 1. Wire a N.O. active low TSL and a N.C. active low PSL to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will run only when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation. 3. Pre-presentation Self Assessment Activity Wire a N.C. active high TSL and a N.O. active high PSL to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will not run when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation. Wire a N.C. active high TSL and a N.O. active high PSL to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will run when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation. 2.

4 I 0,7 Module # O 0,0 Module type O 0,7 Terminal # Input module # 1 terminal connector # 0 I 0,0 Module type 26-761 26-762 26-763 26-767 26-769 26-764 26-768 26-766 Output module # 0 terminal connector # 7 Output module # 0 I/O module structure

5 O 0,0 O 0,7 I1,0 I 1,7 TSL N.C. 24 V PSL N.0. 24 V 24 V input module 48 V output module Motor starter 1 440 V I/O Wiring Input/Output Wiring Wiring field devices to I/O module structure

6 O-0,0 O-0,7 I- 1,0 I-0,7 N.C. 24 V PSL N.0. 24 V 24 V input module 48 V output module Motor starter1 440 V I/O Wiring 42-301 42-302 42-303 42-307 42-309 42-304 42-308 42-306 83-541 83-542 83-543 83-547 83-549 83-544 83-548 83-546 I- 0,0 I-0,7 48 V input module 26-761 26-762 26-763 26-767 26-769 26-764 26-768 26-766 Task: The motor is to run when both limit sensors are in alarm. TSL Note: Both sensors are active low Harness Connection Field Device I/O Address 42-301TSLI-1,0 42-302PSLI-1,1 MS 1 (Motor starter) 83-542 O-0,4 I/O Map Documenting wiring to I/O module

7 O-0,0 O-0,7 I- 1,0 I-0,7 N.C. 24 V PSL N.0. 24 V 24 V input module Motor starter1 440 V I/O Wiring Harness Connection Field Device I/O Address 42-301 42-302 42-303 42-307 42-309 42-304 42-308 42-306 83-541 83-542 83-543 83-547 83-549 83-544 83-548 83-546 42-301TSLI-1,0 42-302PSLI-1,1 MS 1 (Motor starter) 83-542 O-0,4 I- 0,0 I-0,7 48 V input module 26-761 26-762 26-763 26-767 26-769 26-764 26-768 26-766 Ladder (logic) Program I/O Map TSL I-1,0I-1,1O-0,4 PSL (b) Program executed by the PLC Task: The motor is to run when both limit sensors are in alarm. TSL (a) Actual PLC program written for the task I-1,0I-1,1O-0,4 Example of a single rung ladder program PSLTSL Note: Both sensors are active low PLC operating rules: (b) When the rung is contiguous, the output address goes active. (a) The PLC changes your program symbol when the input address is at logic “1” PLC project documentation set 48 V output module

8 O-0,0 O-0,7 I- 1,0 I-0,7 N.C. 24 V N.O. 24 V 24 V input module Motor starter1 440 V I/O Wiring Harness Connection Field Device I/O Address 42-301 42-302 42-303 42-307 42-309 42-304 42-308 42-306 83-541 83-542 83-543 83-547 83-549 83-544 83-548 83-546 42-301TSLI-1,0 42-302PSLI-1,1 MS 1 (Motor starter) 83-542 O-0,1 I- 0,0 I-0,7 48 V input module 26-761 26-762 26-763 26-767 26-769 26-764 26-768 26-766 I/O Map TSL Task: The motor is to run when both limit sensors are in alarm. Note: Both sensors are now active high TSL I-1,0I-1,1O-0,5 PSL (b) Program executed by the PLC Ladder (logic) Program (a) Actual PLC program written for the task I-1,0I-1,1O-0,5 Example of a single rung ladder program PSLTSL PLC operating rules: (b) When the rung is contiguous, the output address goes active. (a) The PLC changes your program symbol when the input address is at logic “1” PLC project documentation set 48 V output module PSL

9 Pre-presentation Self Assessment Activity Ladder (logic) Program Actual PLC program written for the task I-1,0I-1,1O-0,4 PSLTSL Harness Connection Field Device I/O Address 42-301TSLI-1,0 42-302PSLI-1,1 MS 1 (Motor starter) 83-542 O-0,4 I/O Map Wire a N.O. active low TSL and a N.C. active low PSL to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will run only when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation. 1.

10 Harness Connection Field Device I/O Address 42-301TSLI-1,0 42-302PSLI-1,1 MS 1 (Motor starter) 83-542 O-0,4 I/O Map O-0,0 O-0,7 I- 1,0 I-0,7 N.O. 24 V PSL N.C. 24 V 24 V input module 48 V output module Motor starter1 440 V I/O Wiring 42-301 42-302 42-303 42-307 42-309 42-304 42-308 42-306 83-541 83-542 83-543 83-547 83-549 83-544 83-548 83-546 I- 0,0 I-0,7 48 V input module 26-761 26-762 26-763 26-767 26-769 26-764 26-768 26-766 TSL Ladder (logic) Program Actual PLC program written for the task I-1,0I-1,1O-0,4 PSLTSL 2. Pre-presentation Self Assessment Activity Wire a N.C. active high TSL and a N.O. active high PSL to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will run when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation.

11 Ladder (logic) Program Actual PLC program written for the task I-1,0I-1,1O-0,4 PSLTSL Take home observation Ladder (logic) Program Actual PLC program written for the task I-1,0I-1,1O-0,4 PSLTSL Motor should run when both sensors in alarm It does not matter if there are N.O. or N.C. contacts but it does matter if the sensor is active low or active high. Both sensors are active low Both sensors are active high

12 Motor should not run when both sensors in alarm Both sensors are active high 3. Pre-presentation Self Assessment Activity Wire a N.C. active high TSL and a N.O. active high PSL to an input module of a PLC. Wire an active high motor starter circuit to the output module of the same PLC and then, using ladder (logic) language, program the PLC so that the motor will not run when both limit sensors are in alarm. Include the program, the wiring diagram, and the I/O map as documentation. Actual PLC program written for the task Ladder (logic) Program I-1,0 O-0,4 PSL I-1,1 TSL

13 Ladder (logic) Program Actual PLC program written for the task I-1,0I-1,1O-0,4 PSLTSL Take home observation Motor should run when both sensors in alarm In both situations both sensors are active high Actual PLC program written for the task Motor should not run when both sensors in alarm Ladder (logic) Program I-1,0 O-0,4 PSL I-1,1 TSL Motor will not run if the TSL OR the PSL is passive. Motor will run if the TSL OR the PSL is active.

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