AC800M OPC server , Controller status showing Down (Not Communicating)
Redundant AS , CS , MMU , IM server's with 2 Operator station and single EWS.
AS we have redundant Connectivity server configuration . It was running fine , and suddenly all Operator station shows red cross (No data) . When I check OPC communication with controllers, it was all RED (not communicating) .
From CS , i ping all controllers and network was fine .But in OPC , it's not browing any controller's (via Available Controllers) .
Also , OPC service was restarted , it was set on auto load configuration , but still no communication.
Can you please guide me to right path to start troubleshooting .
Thanks in advance.
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