Knowledge base Automation Systems Programmable Logic Controllers (PLC /C Series)

How To Program Flickering Back-And-Forth Between Two Outputs When A Switch Is ON.

Modified on Sun, 11 May, 2025 at 10:39 PM

Introduction
The following are the time chart and ladder programming for the operation specifications.
 
Time Chart
CIO 000000: Pushbutton switch (CIO 0.00)
CIO 000200: Alternating output A (CIO 2.00)
CIO 000201: Alternating output B (CIO 2.01)
 



After turning ON the pushbutton switch (CIO 0.00), the two outputs (CIO 2.00 and CIO 2.01) will alternate turning ON at intervals of T1 seconds, and remain ON for T2 seconds.
 

Example

Ladder Program

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