If the driver is not transmitting messages:
- Examine the green arrow in the OPC Client Power Tool to ensure the driver starts; the arrow should be selected. If it is, select the Stop button and then click the Start button again.
- Examine the Enable check box for the server, groups and items. They should be selected.
- Verify that the driver has connected to the OPC server by viewing the server statistics in the Power Tool.
- Verify that the items have valid item IDs and access paths.
- If you are using asynchronous I/O and have not enabled the watchdog, the driver is operating properly. The driver does not request data from the OPC server unless you select this check box. Refer to Feature: Asynchronous vs. Synchronous I/O to learn more about asynchronous I/O.
- If you are running the driver with iFIX, make sure you have a configuration file with the name nodename.OPC, where nodename is the name of your iFIX node in the Database path (C:\FIX32\PDB, by default). If you are using Dynamics, the file resides in the root Dynamics directory. This file is needed for FIX and iFIX to load the driver; do not delete, move, or rename it.
See Also
