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Inst Tools > Blog > PLC Tutorials > PLC Program for Bank Counter Application

PLC Program for Bank Counter Application

Last updated: March 4, 2021 3:48 pm
Editorial Staff
PLC Tutorials
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A bank having three counters for Deposit /Withdraw cash in which totally 15 people are allowed for a day. When people count reaches 15, display will show Counter Closed and should not allow the 16th person to check-in. Develop a suitable program for this plc programming example.

Contents
PLC Program for Bank CounterList of Inputs and OutputsPLC Counter ExampleLadder Logic DescriptionConclusion:

PLC Program for Bank Counter

PLC Counter Example for Bank

List of Inputs and Outputs

PLC Counter Example Inputs and Outputs

PLC Counter ExamplePLC Bank Counter Logic

Counter Example in PLC Programming

Ladder Logic Description

RUNG000

Latching rung to operate the system through Master Start and Stop PB.

RUNG001

When a person enters Counter 1, Sw 1 is pressed by the bank person to make count .One shot is used to give single pulse input which will be store in O:0/1

RUNG 0002

When a person enters Counter 2, Sw 2 is pressed by the bank person to make count .One shot is used to give single pulse input which will be store in O:0/2.Counter done bit is used to restrict the 16th person to enter.

Rung 0003

When a person enters Counter 3, Sw 3 is pressed by the bank person to make count .One shot is used to give single pulse input which will be store in O:0/3

Rung 0004

Collected outputs from the above rungs are accumulate in Counter block. Comparator block is used to limit the count by 15.

Rung 0005

Counter (C5:0) done bit is used to refresh the Process from beginning

Program runs continuously until STOP PB is pressed.

Conclusion:

The above explained Bank counter  using PLC is for example only. It may vary from real time. We can use this example program to understand the working of Counters function in AB PLC.

Author : Hema Sundaresan

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