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.

Step 1: Create New File

Step 2: Registers in WPLSoft:

Step 3: Select Counters in API

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

Step 4: Counter (CNT)

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

Step 5: CNT Explanation:

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

Step 6: 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.

Step 7: Start to Make a Example of 12Hour Clock.

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

Step 8: Counter Command: (Seconds)

Select counter command and make it to count for seconds.

Step 9: Seconds Counter:

Step 10: Counter Command: (Minute)

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

Step 11: For Reset:

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

Step 12: For Hours:

Similarly, for hours we reset it.

Step 13: Start Simulation Mode:

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

Step 14: Simulation Mode:

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

Step 15: Video Tutorial of Project:

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