Asked by Haley Adams on Apr 29, 2024
Verified
The MCR instruction establishes a zone in the user program in which all nonretentive outputs can be:
A) turned on simultaneously.
B) turned off simultaneously.
C) turned on in a defined sequence.
D) turned off in a defined sequence.
MCR Instruction
Master Control Reset, an instruction used in programming PLCs to control the execution of a block of logic or instructions between its start and end points.
Nonretentive Outputs
Output signals or data in a control system that do not maintain their state after a power cycle or reset.
- Apprehend the functionality and importance of JMP, MCR, and subroutine instructions for programming in PLC environments.
- Learn about the operational contrasts between retentive and nonretentive outputs and their behavior when situated in an MCR zone.
Verified Answer
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Final Answer :
B
Explanation :
The MCR instruction can be used to turn off all nonretentive outputs simultaneously in the established zone. It cannot be used to turn on outputs simultaneously or in a defined sequence.
Learning Objectives
- Apprehend the functionality and importance of JMP, MCR, and subroutine instructions for programming in PLC environments.
- Learn about the operational contrasts between retentive and nonretentive outputs and their behavior when situated in an MCR zone.