Safety network system and safety slave

Details Safety network system and safety slave Safety network system and safety slave

2002-06-21

2008-12-30

Wong, Don (Department: 2163)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

07472106

ABSTRACT:
A safety PLC1serving as a master and a safety slave2are connected through a safety network3to constitute a network system. The safety slave has non-safety information storing unit26for storing individual information and a state information of the connected safety device, the state information monitors a state of the operating safety device and a stored content is updated based on its monitored result. Then, when the non-safety information satisfying a fixed condition, at least the non-safety information satisfied the condition is transmitted to the safety PLC. That processing is performed by an MPU23. Thus, unnecessary non-safety information is not transmitted.

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European File History, Application No. 02730857.6—2206, Patent No. 1396772, Date of Filing May 31, 2002.

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