OPC Server does not load the symbol file from AC500

OPC with symbol file on AC500 does not function. Indeed, the OPC server is shown, but no OPC variables are to be found.

Note

If the OPC server does not load the symbol file (.sdb) from AC500 PLC (FW V2) to PC, the reason can be that the Programming Software 907AC1131 is installed.

Please check the registry item: HKEY_LOCAL_MACHINE\ SOFTWARE\ 3S-Smart Software Solution GmbH\ Gateway Server\ Config\ EnableSymbolFileUpload.

If this item is inside, the symbol file will not be loaded from AC500 PLC to PC. For Control Builder Plus this item must be deleted but for AC1131 this item must be available. You must ckeck this.

  1. In Windows, go to Start ‣ Run and type regedit.

    ⇒
    ../_images/0f06fe3f51b25f3a0a317f3477de7d941

  2. In Registry Editor, find the folder Config:

    • For AC500 FW V2 the item EnableSymbolFileUpload must be deleted.
    • For AC1131 this item must be available.
    ⇒
    ../_images/4aa999f051b50ac30a317f3404fc0bc51