PLC Automatic Control of Two Outputs with one Input

This is PLC Program for the automatic controlling of two outputs with one push button.

We need to control two outputs with single push button. Based on the duration of push button pressed, the outputs will be controlled. Write the PLC program for the application using ladder diagram language.

Control of Two Outputs with one Input

PLC Solution

Consider single push button for this application and two output lamps. Both lamp will be operated by single push button. When push button is pressed for less than 1 second, lamp 1 will be ON. And push button is pressed for long time, lamp 2 will be ON.

So both the output can be operated individually by pressing single push button.

List of Inputs/Outputs

List of Inputs

I1:-Push button

List of Outputs

Q1:-Lamp 1
Q2:-Lamp 2

PLC Ladder Logic

Ladder Logic Description

Network 1 :-

In this network push button (I1) is pressed, lamp 1 (Q1) output will be ON immediately.

Network 2 :-

When push button is pressed, on delay timer instruction will be executed.

Network 3 :-

If push button is pressed for long time, on delay timer instruction will be executed and it will operate lamp 2 (Q2).

Note:-

Above application may be different from actual application. This example is only for explanation purpose only. We can implement this logic in other PLC also. This is the simple automatic controlling of two outputs with one push button. we can use this concept in other examples also.

All parameters and graphical representations considered in this example are for explanation purpose only, parameters or representation may be different in actual applications. Also all interlocks are not considered in the application.

Inst Tools