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Up Next in IEC 61131 Programming Using Ladder, Structured Text and Function Block

  • 3. Creating IEC Programming Languages...

    For the three language types, we will create the Ladder routine, which is one of the three IEC-61131 routines.
    - First, let’s create the ladder routine. Right-click over the MainProgram folder, select Add, and then New Routine. For the Name, we will type in RealPars_Ladder, and for the Type, we ...

  • 4. Process Logic Explanation

    Before we begin to program the Ladder routine, we went ahead and added a few rungs of ladder logic to simulate the tank level. If you would like to follow along, the Studio file, named RealPars_IEC61131 can be downloaded from this link:
    - The first three rungs in the MainRo...

  • 5. Programming Ladder Logic Routine

    Let’s begin to program the ladder logic routine.
    We will add two new rungs to our ladder routine.
    We use a greater than or equal element that compares the tank level tag, with the pump start setpoint tag, and latches the SoftWaterTank.PumpStarter and SoftWaterTank.WaterValve coils.

    These coils w...