Interconnected zones within a process control system
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United States of America Patent
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Oct 30, 2007
Grant Date -
Aug 15, 2002
app pub date -
Apr 9, 2002
filing date -
Oct 18, 1999
priority date (Note) -
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Abstract
A process control system includes multiple zones containing process control network communicatively interconnected to exchange information necessary to monitor the system and to perform process control. Each zone may include an inter-zone server that controls the exchange of information between the zones via communication links. In addition to controlling the routing of information between the zones, the inter-zone servers may perform additional processing on the information being exchanged, such as security monitoring, language translation and version control.
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