Connection element for producing a wired connection between a first and second unit

A method for producing a wired connection between a first unit and a second unit using a connection element with a diagnostic module, the method comprising:

• receiving data, by the diagnostic module, from the first unit over a wired data connection;
• storing at the diagnostic module the data received from the first unit for a run time of the first unit;
• keeping the stored data ready so that it can be read out over a wireless data connection;
• and
• in response to a fault condition of the first unit, in which the first unit cannot communicate over wired routes or is not connected to a voltage supply, outputting at least a portion of the stored data via a read-out interface of the diagnostic module.

A method for outputting device parameters of a connection element comprising a diagnostic module, wherein the diagnostic module includes

• a receiving interface configured to receive data from a first unit over a wired data connection,
• a memory module configured to store the data received from the first unit, and
• a read-out interface configured to output the data stored by the memory module over a wireless data connection,
• the method comprising:
• storing data in the memory module for a run time of the first unit;
• and
• in response to a fault condition of the first unit, in which the first unit cannot communicate over wired routes or is not connected to a voltage supply, outputting the data from the memory module via the read-out interface of the connection element.