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contesto: manuale diagnostica porte metrò

Current diagnostic codes will be automatically cleared and become temporary diagnostic data (background memory), if a previous faulty state clears and the door works again correctly or if the reason for the diagnostic code is repaired by the train personnel (however not by isolating the door)

The background memory contains temporary diagnostic data, i.e. diagnostic data that were previously observed by the DCU, but are not active at the moment of data transmission from DCU to PC or have been changed into temporary diagnostic data by any circumstances (i.e. by itself or an action of train personnel).

grazie