How to use Sub Routines with Allen Bradley PLC
Sub routines are sub programs in a PLC project. We can split the whole program by its function or sequence. We can call the sub programs from main page using...
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How PLC Reads the Data from Field Transmitters
Instrumentation and control rely on converting physical or process variables into a more useful format for the operator display. Pressure in a pipe is converted to mechanical deflection of a...