Asked by Krupa Patel on May 19, 2024
Verified
The MCR instruction can be used to control:
A) entire sections of a program.
B) entire rungs of a program.
C) selected elements within a rung of a program.
D) entire sections and entire rungs of a program.
MCR Instruction
Stands for "Master Control Reset", an instruction in PLC programming used to turn off a defined range of outputs when certain conditions are met.
Program Control
Program Control refers to mechanisms or methods employed within software to direct the flow of execution, determining the sequence in which various instructions or program elements are processed.
- Understand the principles of program segments and the management through instructions such as JMP, JSR, and MCR.
Verified Answer
PS
Parker SuttonMay 24, 2024
Final Answer :
D
Explanation :
The MCR (Master Control Relay) instruction is used in programmable logic controllers (PLCs) to control the execution of large sections of a program or entire rungs. It acts as a master switch for controlling the flow of the program, allowing or disallowing the execution of parts of the program based on certain conditions.
Learning Objectives
- Understand the principles of program segments and the management through instructions such as JMP, JSR, and MCR.