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27. Input and Output Instructions

Introduction to Allen Bradley PLCs - RSLogix 500 • 1m 27s

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  • 28. The ADD and XIC Instructions

    We append another rung so that we can add the logic to increment or add 1, to “N7:0” when the timer times up.

    We navigate to the “Compute/Math” tab, and click on “ADD”.

    We want to execute the “ADD” instruction when the timer times out.

    The bit “DN” is set when the timer times out.

    To add thi...

  • 29. Finishing the Logic

    We click on “Source A” and enter the integer we wish to increment.

    We enter 1 for “Source B”, the value we want to increment by.

    For the “Destination”, we enter “N7:0”. When we press “ENTER”, the entries for the “ADD” instruction are complete, and the description and symbol for “N7:0” are shown...

  • 30. RSLogix 500 Program Download

    To download the program to the RSLogix 500 simulation program, we need to do two things.

    First, we must start the "RSLogix Emulate 500" program to provide the container for the program we just wrote and to provide a runtime environment for the program.

    The “RSLogix Emulate 500” program runs th...