METHOD AND SYSTEM FOR IMPLEMENTING REDUNDANT NETWORK INTERFACE MODULES IN A DISTRIBUTED I/O SYSTEM

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: DECKER BRUCE M
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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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master (204) in a secondary, standby, mode, ready to assume mastership of the system if the primary master (202) is no longer active.