Chapter 9, Problem 4RQ

Program Plan Intro

a.

Jump instruction:

In PLC programming, the Jump instruction is an output instruction used to jump over certain program instructions when certain condition exists. When the jump rung becomes true, it makes the ladder program to skip over rungs of the ladder program.

Jump to Label instruction:

The jump to label instruction either jumps forward or backward to the corresponding label instruction.

Explanation of Solution

b.

Affecting jumped rungs:

• At the time of executing a jump-to-label instruction, the jumped rungs are not scanned by the processor...