Connectivity Issue Java-based OPC DA Connector is failing to establish the connection with Emerson deltav OPC server due to technical error during the connection initialization stage. Same connector is connecting to OPC servers of other brands successfully.
Troubleshooting & Results: 1. Installed and configured Emerson OPC remote (using exact the same parameters) and they were successfully connecting and extracting data. This eliminates a root cause of wrong connectivity parameters were used. 2. Tried deltavadmin user credentials to initiate the connection from our connector but got exact the same error. 3. Investigated & tracked the java library source code to figure out the root cause of the technical error. We identified missing expected DCOM parameter. 4. Ran OPC DA connector as 32-bit OS process to eliminate any possible supportability issues with 64-bit OPC DA clients. We got the exact same error. 5. Inspected the network packet between the OPC DA connector & deltav server and we found out that the data exchanged with the server during the initialization phase is missing expected fields by the Java connector. 6. We’ve tried to use other tools provided by Matrikon to investigate the parameter from DA client's end : A. Matrikon Funnel: wasn’t connected to Emerson server, we reported the issue to Matrikon team to support. B. Matrikon Sniffer: wasn't connected to the OPC client, we reported the issue to Matrikon team to support. C. Matrikon Tunneller : client-side gateway was installed to the the client machine, we need supplier to help in installing server-side gateway component on Emerson OPC server machine.
Please advise if someone tried similar solution and found a fix for this issue.
In reply to Jack.Zhang: