PLC programming port extension module and PLC data acquisition method

The invention discloses a PLC (Programmable Logic Controller) programming port extension module and a PLC data acquisition method, which are used for extending a PLC programming port, providing an Ethernet interface for a PLC and simultaneously connecting an HMI (Human Machine Interface) terminal an...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG YONGWANG, CHEN LEYANG, DING LIYI
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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Beschreibung
Zusammenfassung:	The invention discloses a PLC (Programmable Logic Controller) programming port extension module and a PLC data acquisition method, which are used for extending a PLC programming port, providing an Ethernet interface for a PLC and simultaneously connecting an HMI (Human Machine Interface) terminal and the PLC programming port so as to carry out PLC data acquisition and network data transmission. The method is used for solving the problem that data acquisition cannot be carried out due to the fact that a PLC lacks an Ethernet interface and a PLC programming port is occupied. 本发明公开了一种PLC编程口扩展模块及PLC数据采集方法，其对PLC编程口进行了扩展，为PLC提供了以太网接口，并且能够同时连接HMI终端和PLC编程口，以进行PLC数据采集和网络数据传输。本发明用于解决PLC缺少以太网接口以及PLC编程口被占用导致无法进行数据采集的问题。