Use the Log Viewer

Error messages are created by the Communication Driver and logged by the Logger. You can view these messages with the Log Viewer. The Log Viewer help files explain how to view messages and how to filter which messages are shown.

Log Flags are categories of messages. The Log Flag Editor User Guide contains an explanation of the categories. Using the Log Flag Editor, you can specify which log flags the Communication Driver creates.

Note: Generating large numbers of diagnostic messages can impact Communication Driver performance. You should not run in production with any more flags than those set when the Communication Driver is installed. To troubleshoot you can turn on more flags, but there is a performance impact. For more information, see the Log Flag Editor User Guide.

Open the Log Flag Editor:

1. In the OCMC, expand Log Viewer, and then expand the log viewer group.

2. Select Local.

3. On the Action menu, select Log Flags.

In general, look at error and warning messages to determine if a problem exists. To determine whether the Communication Driver is communicating with a device, you can enable the DASSend and DASReceive log flags. From these you can determine whether or not the device is responding.