The simulator is used when you don’t have an actual PLC and you want to test the logic, It acts as a virtual PLC.
In the last article, I have explained a method to create a new project using a Siemens Simatic manager.
Here, in this article, I will explain how to use the simulator in siemens plc, works the same in both Simatic manager and TIA portal if you have selected CPU-300 or 400.
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Here, I will create a program for high and low-level detection and work with a simulator.
Here I0.0 is used for Low-level switch,
I0.1 is used for the high-level switch,
Q0.0 is used for the pump.
When the level is low then the low-level switch will energize and makes the pump run. Here, the pump is latched to provide continuous signal flow.
When the level reaches to a High level due to NC contact it Won’t allow the signal to pass and make pump OFF till it can’t get back to a low level.
In Simatic manager go to “option” and hit click on “set PG/PC interface”
You can select another option if you have connected It with actual PLC as per the network you have used for your application.
Hit “ok” will load the selected option.
Here, in the simulator, as shown in a red mark change it with PLC SIM (MPI) from TCP/IP otherwise it won’t work.
In the simulator choose ”Run” or “Run-P” mode and test the logic.
Author: Suhel Patel
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