How to Use Counter in Ladder Diagram? | Delta WPLSoft

In this tutorial, we are showing how to use counters in real time appilications as an example.

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Registers in WPLSoft:

Select Counters in API

In WPLSoft 2.48, we have API 97 'CNT". Select API 97.

Counter (CNT)

You can click on 'HELP' to check command syntax and explanation.

CNT Explanation:

In this software, we have 16-bit counter which is executed from OFF to ON when we start to run.

DCNT Explanation:

In this software, we also have 32-bit decrement counter which is executed from ON to OFF when we start to run. We also have some High speed counters from C200-C255. We have some addition/subtraction counters from C235-C255.

Start to Make a Example of 12Hour Clock.

Select M1013 special function register which creates 1sec pulse (Off/On).

Counter Command: (Seconds)

Select counter command and make it to count for seconds.

Seconds Counter:

Counter Command: (Minute)

Select counter command and make it to count for minutes and for hour and so on.

For Reset:

For counter, we need to reset it first before using it again.

For Hours:

Similarly, for hours we reset it.

Start Simulation Mode:

Noticing that seconds counter is increasing and it will reach on 59secs.

Simulation Mode:

As seconds counter reaches on 59 sec, it will make minutes counter high.

Video Tutorial of Project:

How to use Counters in ladder diagram? | Delta WPLSoft

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