Control system for controlling safety-critical processes
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United States of America Patent
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Mar 11, 2003
Grant Date -
Sep 12, 2002
app pub date -
Dec 21, 2001
filing date -
Jun 22, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention describes a control system for controlling safety-critical processes. The control system has a first control unit for controlling a safety-critical process and at least one signal unit linked to the safety-critical process via I/O channels. It further comprises a field bus connecting said first control unit and said signal unit, and a bus master for controlling communication on said field bus. Said first control unit and said signal unit each comprise safety-directed arrangements for ensuring failsafe communication among each other. Said bus master is connected to said field bus separately from said first control unit and said signal unit.
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