Software Requirements

OPC operates using the Microsoft Distributed COM (DCOM) architecture, which is part of the Windows operating system.

If a distributed OPC system is being accessed (i.e., remote servers), you need to configure DCOM security settings on the remote machines to allow operators access to the servers. To configure these settings, use the program DcomCnfg.exe.

If sufficient privileges are not established, communications errors may result, so take care when configuring your system.

Note: You need to confirm with the supplier of the OPC Server you are connecting to that their product is DCOM compliant.