Change of state i/o messaging – Rockwell Automation 1403-NDNET DeviceNet Communications Card Installation Instructions User Manual
Page 25
Publication 1403-IN054A-EN-P - August 2001
Product Description 1-19
Change of State I/O Messaging
The Powermonitor II supports Change of State (COS) I/O Messaging
which reports data on a change-of-state basis as the events happen,
rather than a master going through a polling list.
Change of state messaging is typically more efficient for discrete
applications; for network traffic is significantly reduced, and
performance is greatly improved.
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