Asked by itzel torres on Apr 25, 2024
Verified
PLC emergency stop circuits should be:
A) hardwired outside the controller program.
B) programmed as part of the MCR instruction.
C) programmed as part of the zone control last state instruction.
D) programmed as an immediate input instruction.
PLC Emergency Stop Circuits
Safety features in Programmable Logic Controllers designed to halt operations immediately to prevent accidents or equipment damage.
MCR Instruction
Master Control Reset Instruction, used in programming PLCs to control the execution of blocks of logic.
- Recognize the importance of emergency stop circuits and safe practices in PLC programming and hardware maintenance.
Verified Answer
NA
Niloofar Afshar7 days ago
Final Answer :
A
Explanation :
Emergency stop circuits should always be hardwired outside the controller program to ensure that they are directly and immediately accessible to an operator in case of an emergency. This is a safety measure to prevent delay or failure of the emergency stop function due to issues within the program or controller.
Learning Objectives
- Recognize the importance of emergency stop circuits and safe practices in PLC programming and hardware maintenance.