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Problem:
LinkMaster is on Machine A and the RSLinx OEM is on Machine B, but the two cannot communicate.

Possible Cause:
The RSLinx OEM only supports local OPC connectivity.

Solution:
Place LinkMaster on the same machine as the RSLinx OEM. At that point, users will be able to serve data to other OPC clients or bridge data to other OPC servers.

Note:
This also applies to KEPServerEX and its OPC DA Client Driver when attempting to connect the OPC DA Client Driver to an RSLinx OEM.