Timing information

The timing information helps to put an event into a time context. In the transmission control unit, this question is answered by storing time stamps. Here, the term “time stamp” has to be taken almost literally. Similar to time clocks which document an event (such as arrival or departure) by means of a stamp on a time recording card, the control system documents events by means of a "stamp" (storing a time value) in the event memory. A distinction is made between:

relative time indications of an event

absolute time indications of an event

histogram.

For further information on time stamps, please see: Time stamps in event memory entries.

You need the 'Service' user level (access authorization) or higher to access the timing diagrams.

This diagram type shows when the event has occurred for the first time and when the event disappeared for the last time with regard to "Ignition on" and reading the event memory.

This diagram type shows when the event has occurred for the first time and when the event disappeared for the last time with regard to the actual time.

This diagram type shows all events in their interrelationship.

From relative time flags:

In the example, the fault occurred for the first time 4 seconds after "Ignition on" (active). This event happened 49 hours and 50 minutes before reading the event memory. The last disappearance was directly during "Ignition on" and thus 49 hours and 29 minutes before reading the event memory (passive). The event occurred for approx. 11 minutes.

From absolute time flags:

Within these 11 minutes, the event became active and passive again six times. First occurrence and last disappearance took place at a mileage of 16,777 km. The vehicle was not moved during this event.

From histogram:

The examined event 0F0180 occurred simultaneously with the events 2, 3 and 5. It must be checked whether they are mutually dependent.

More information on: Time stamps in event memory entries

More information on: Event properties

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