Now and after we have discussed and summarized the batching process operation the next step is to clarify the Input and Output signal list as followed: F unction Address START I:1/0 STOP I:1/1 HIGH-LEVEL I:1/4 LOW-LEVEL I:1/3 PUMP (1) Q:2/1 PUMP (2) Q:2/3 HEATER Q:2/4 MIXER Q:2/0 THERMOSTAT I:1/2 Translating the batching process conditions into Ladder instructionsĪlways remember that programming is not as hard as you imagine all you need is to start step by step and whenever you feel that your PLC code becomes to be complicated and not organized, be sure that you are on the wrong path. Finally, the whole fluid should be discharged using “PUMP_ (3)” The Application I/O Signal List.Then using the MIXER for mixing the fluid for 30 Sec.Then the HEATER should operate till the thermostat reaches the set point.
By pressing the start push button, “PUMP_ (1)” which is responsible for filling the tank, should turn on to start the filling operation.
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