Tag : basic interview questions and answers on plc

Programmable Logic Controller (PLC) Questions and Answers – 2

S Bharadwaj Reddy
Suppose we have a PLC connected to three process switches as shown in this illustration: In the above diagram : X1 to X4 : Inputs Y1 to Y4 : Outputs

Programmable Logic Controller (PLC) Questions and Answers – 1

S Bharadwaj Reddy
Suppose we have a PLC connected to three pushbutton switches as shown in this illustration: In the above diagram : X1 to X4 : Digital Inputs Y1 to Y4 :

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