The safest way to wire a stop button to a PLC system is to use an NC contact programmed to examine for an ON condition.
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Q1: Power to the PLC input and output
Q2: The label instruction has a logical true
Q3: The immediate I/O instruction is most useful
Q4: The immediate I/O instruction is used with
Q5: In a jump-to-label program, the label instruction
Q7: The master control relay instruction can be
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Q9: The forcing capability of a PLC allows
Q10: Master control reset (MCR) and jump (JMP)
Q11: The use of the immediate I/O instruction
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