Issue: Items Are Not Available in the OPC Client

Issue

Not all items are provided in the OPC client (OPC state OPC_RUNNING).

The symbol file is not correct.

Cause 1

The symbol file has not been generated when the new project has been uploaded to the controller. Thus, the OPC server is still processing the old symbol file.

Solution 1

Regenerate the symbol file by modifying the Logic Builder / EPAS-4 settings and download the project to the controller. Also refer to symbol file configuration.

Cause 2

The project name has been changed but the OPCServer.ini file has not been adapted. This cause is only available in simulation mode.

Solution 2

Adapt the settings via the OPC configuration tool.

Cause 3

The items have been changed in the project, but they have not been added to or modified in the symbol configuration or symbol file.

Solution 3

In Logic Builder / EPAS-4, verify the symbol configuration. Modified variable names are not automatically deleted. You must remove and reinsert them manually.

Cause 4

New or modified items are not displayed, although the symbol configuration/symbol file has been transferred correctly.

The OPC server is running as a service.

Solution 4

Cause 5

One or several controllers have been disabled in multi-controller operation.

Solution 5

Verify the configuration of the OPC server and enable the controllers.

Cause 6

The project in the controller has not been downloaded with Logic Builder via the gateway server/Gateway Management Console used by the OPC server. Thus, the OPC server is still processing the old symbol file.

Solution 6

Two solutions are available for EPAS-4/Logic Builder:

oDownload the project with Logic Builder to the controller via the gateway server/Gateway Management Console of the OPC server.

oCopy the symbol file from the EPAS-4/Logic Builder computer, and paste it on the computer running the gateway server/Gateway Management Console of the OPC server.