Electrical combination instrument for motor vehicle, has transceiver for data bus is arranged on boards, where specific data required for control of instruments and/or drive units are transmitted to control element by data bus

摘要

The instrument (1) has a functional printed circuit board (2) connected with a design printed circuit board (3) by an electrical interface for controlling analog and/or digital indicating instruments and/or drive units. The interface is designed as a bi-directional, serial data bus (13), and a transceiver (9) for the data bus is arranged on the boards. A specific data required for the control of the instruments and/or drive units are transmitted to a control element, which is arranged on the boards, by the data bus before beginning of operation of the instruments and/or drive units.