The status bit of switches and pushbuttons connected to a PLC are stored in the:
A)input image table file.
B)output image table file.
C)user program.
D)all of these.

Question

Quizplus · Accepted Answer

The input status of switches and pushbuttons is stored in the input image table file which is a part of the PLC's memory. The input image table file keeps track of the status of all the inputs connected to the PLC. The output image table file, on the other hand, keeps track of the status of all the outputs that are controlled by the PLC. The user program of the PLC consists of the ladder logic or other programming language that is used to control the operation of the PLC. Therefore, the correct answer is A, input image table file.

The Status Bit of Switches and Pushbuttons Connected to a PLC