Controller is connecting to Data Access but not Alarm Event on OPC panel.
There are total eight controllers (172.16.16.151 to 158). One pair of redundant connectivity servers. Now the problem is out of these eight controller only one controller (172.16.16.153) which is not connecting to Alarm Event on OPC panel on primary connectivity server (Data access is ok). Same controller is connecting to Data access & Alarm Event on OPC panel on secondary connectivity server.
OPC error log file is attached.