Connection system, in particular a plug-in connection system for the transmission of data and power supply signals

Connection system, in particular a plug-in connection system for the preferably contactless transmission of data and power supply signals between a sensor means (2) and a base unit in a measuring and transmission system, comprising

• a sensor-side connection element (1) with
• a power signal receiver (12),
• a data modulator/demodulator unit (13) which can be coupled at least indirectly, for the purposes of signalling, to at least one measuring sensor (8, 9) of the sensor means, as well as
• a first coupling partner element (14) for the preferably contactless transmission of data and power supply signals via a coupling path (15),
• a base-side connection element (4) with
• a second coupling partner element (16) of the coupling path (15),
• a power signal transmitter (17),
• a data modulator/demodulator unit (18),
• a data interface (20) which can be connected to the base unit with respect to data, as well as
• a primary power supply (21),
• a microprocessor-assisted control and memory unit (19) in at least one of the connection elements (1, 4), and
• an optical diagnosis display unit (22) in at least one of the connection elements (4) for displaying state parameters within the measuring and transmission system.