PLC operation program item change detection method

The embodiment of the invention provides a PLC running program item change detection method, which comprises the following steps of: inserting a function FC and a data block DB in a PLC running program item, establishing a verification result variable through the data block DB, periodically reading...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG KAI, SONG XIGUANG, WANG KUN, ZHAO XIANGTAO, LANG XIAODI, ZHANG SHUPENG, GE WEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING
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