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AVEVA Enterprise SCADA

Invalid message alarm messages

  • Last UpdatedApr 24, 2025
  • 1 minute read

If a valid message is not received from the remote after a specified number of retries, the remote shifts to the applicable invalid state and the system logs an event. If the remote stays in this state for longer than the Administrator-configured timeout value, the system issues the applicable invalid state alarm.

The alarm message takes the following format:

Communications on RemoteName - invalid message - InvalidState - unavailable for > TimeSinceProcessingOfLastGoodValue seconds

Invalid Message Alarm Message (Security Error example)

Note: Regardless of the type of invalid failure, the hold off continues provided the host does not receive a valid communication. For example, a "SECURITY ERROR" failure followed by a "SHORT MESSAGE" failure would not cause the hold off to be reset.

Invalid Message Alarm Message (Short Message Error following a Security Error)

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