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Windows XP SP2 has been known to be problematic with OPC servers. Windows DCOM security can limit access to the ION Enterprise OPC data access server.
An OPC client can connect to ION Enterprise when installed on the same computer, but when installed on a remote machine it is unable to connect. The user may receive the error opcenum does not exist. The OPC tags are not browsable on the client.
Power Monitoring Expert 7.2.x, StruxureWare Power Monitoring 7.X, ION Enterprise
Windows Server 2012, Windows 7, Windows Server 2008, Windows XP, OPC Client
Windows XP SP2 is known to be problematic for distributed OPC. By default the DCOM settings do not allow information to be viewed remotely.
To establish a client OPC connection to an ION Enterprise OPC server on Windows XP perform the following steps:
6. Expand My Computer ` DCOM Config
12. Choose to use custom Access permissions and configure the security for the user/group desired according to the following screenshot:
You should now be able to connect to the ION OPC server from a remote client.