Initiates internal CP290 diagnostics. This test will take approximately 12 seconds and a counter will show progress. Possible outcome of the diagnostics are: PASSED, FAILED and ERROR. If an ERROR is reported then the CP290 is not connected properly or does not respond.

CAUTION: Do not use the Close from the system menu to close this window during diagnostics. Wait until the diagnostics has finished and the Close button is enabled.

Performing diagnostics will destroy all timer data currently programmed into the CP290. A warning will be displayed before diagnostics is started and you will be given the option to continue or cancel.

After performing diagnostics, you must upload all timers to make the CP290 functional again.