1) Describe role and operation of I/o modules in a PLC system in detail.
2) Describe the proper construction of PLC ladder diagrams
3) Describe the basic input instruction of a PLC
4) Describe the procedural steps involved in Drill press operation. Sketch the Ladder diagram for drill press control.
5) Describe the following:
i) AND gate and relay and PLC equivalents
ii) NOR gate and relay and PLC equivalents
6) Describe about Ladder diagrams and sequence listings.
7) Write down the characteristics of PLC registers.
8) Describe about the following:
i) Input registers
ii) Addressing format of Allen Bradley PLC.