3 Terms, definitions and conventions ToC Previous Next

3.2 OPC UA for IEC 61131-3 terms ToC Previous Next

Controller

a digitally operating electronic system, designed for use in an industrial environment, which uses a programmable memory for the internal storage of user-oriented instructions for implementing specific functions such as logic, sequencing, timing, counting and arithmetic, to control, through digital or analogue inputs and outputs, various types of machines or processes

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