Examlex
Which of the following is NOT a structural component of a triad?
Normally Open
Describes a switch or relay contact that is open (disconnected) in its resting state and closes (connects) when activated.
XIC Instruction
A "Examine if Closed" instruction in PLC programming, used to check if a specific condition or input is true.
XIO Instruction
"Examine if Open" instruction in PLC programming, used to check if a Boolean input condition is false before executing the subsequent logic.
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