The XIO instruction:
A)processor checks for a logic input of 0 or 1.
B)returns a true value if the input is logic 1.
C)returns a true value if the input is 0.
D)both a and c.

Question

Quizplus · Accepted Answer

The XIO (Examine if Open) instruction in PLC programming checks for a logic input of 0. It returns a true value if the input is 0, combining both the checking for a logic input (A) and returning a true value if the input is 0 (C).

The XIO Instruction