Method and system for implementing redundant network interface modules in a distributed I/O system

A method and system is disclosed for implementing redundant master NIMs (202, 204) on a single bus (106) in an industrial distributed I/O system (200) for controlling selected I/O modules (110, 112, 114). According to aspects of the invention, two master NIMs (202, 204) interoperate on a single bus...

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Bibliographische Detailangaben
1. Verfasser:	DECKER BRUCE M
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING COMPUTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A method and system is disclosed for implementing redundant master NIMs (202, 204) on a single bus (106) in an industrial distributed I/O system (200) for controlling selected I/O modules (110, 112, 114). According to aspects of the invention, two master NIMs (202, 204) interoperate on a single bus (106), with one being the primary, active, master (202), and the second master (204) in a secondary, standby, mode, ready to assume mastership of the system if the primary master (202) is no longer active.