From this application, the user will be able to find a Datablock (DB) number for the alarm code generated by the CNC model 840d.Click on the "Alarm 840d - 7xxxxx" field;Enter a valid value between 700000 and 702463 available on the machine;Click search;Receive the corresponding memory value on the screen.This App is only intended to assist maintenance professionals and is not intended for financial gain from their use.