What is the purpose of the key switch located on the front of the CPU in many PLCs?
What is the purpose of the key switch located on the front of the CPU in many PLCs?
Understanding Motor Controls
4th Edition
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter38: Programmable Logic Controllers
Section: Chapter Questions
Problem 11RQ: What is the purpose of the key switch located on the front of the CPU in many programmable logic...
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Question
What is the purpose of the key switch located on the front of the CPU in many PLCs?
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Step 1
Given
CPU
PLCs
To find
Significance of key switch for PLCs
Step 2
There are three basic key switch
1) Run
2) Remote
3) Program
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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