# Perform a Diagnostic Self-Test on Device:

- This function performs a diagnostic Self-Test on a specified device.
- This function will return communication test results (normal or error code) for Device.
- The Dialer will reset all available network diagnostic counters and information.
- If you configure a LDL device for reporting, there is additional information printed.
- This self-test may take a long time to complete.

Note: MODBUS only: Communication alarms may trip, but will be reset when exiting program mode.

Alarmware™ Example:

To get a Device Diagnostic Report, connect to the desired RTU and click Diagnostics on the main menu. Click the Device Diagnostic | Self-Test menu item.

The results will appear in the “Messages for RTU” window.

When all the devices are enabled and working the test result will display:

- Modbus Network Device test is NORMAL.
- Printer Device test is NORMAL.
- AlarmWare Port Device test is NORMAL.
- Log File Device test is NORMAL.