B&B Electronics VESR321_ML_SL - Manual - Manual (Page 31)

Diagnostics
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Information about the progress of the pinging process is displayed in the test progress box.
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Figure 17. Testing a Serial Server Connection
Testing a Virtual COM Port
To run diagnostics on a virtual COM port:
1. Transmit and Receive must be shorted together.
2. Click the Diagnostics icon.
The Diagnostics dialog box appears.
3. Select the option: a virtual communications port
4. In the drop down box select the specific COM port you want to check.