Status Supervision - ABB S900 Manual

or not valid in the Controller. The alternative way to get diagnostics
information is the use of SMART VISION with the S900 DTM.

Status supervision

All S900 input values (digital and analogue) appear with a status information.
For digital values the status is processed as a further input signal. This must
be done in the function plan explicitly. For analogue input values the status
delivered by S900 is combined with the status information produced by
AC800M. An unvalid input value by S900 leads to an error for the value in
the application.
3BDD010422R0101
Communication Interface for PROFIBUS DP, CI920
I/O System S900
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