Processing duplicate events and modify events received from MEI
When the Message Event Interface (MEI) receives a duplicate message, the following processing occurs:
- The probe
receives a message
OPC_MSG_EVENT_DUPL_RECEIVED
orOPC_MSG_EVENT_MODIFY
. - The probe sends a query containing the message ID received in the duplicate message to the target system.
- The target system sends the full message to the probe.
- The probe sends the message to the ObjectServer for deduplication.