What is Examine if closed (XIC) Instruction in PLC?

Use the Examine if closed (XIC) instruction in your ladder program to determine if a bit is on.

  • When the XIC instruction is executed, if the bit addressed is on (1), then the instruction is evaluated as TRUE.

  • When the XIC instruction is executed, if the bit addressed is off (0), then the instruction is evaluated as FALSE.

Alternate name: Normally open contact

Examine if closed (XIC) Instruction

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