Initialization method for a data bus

The data bus system (1) has a data bus line (4) and a supply line (8) arranged in a ring structure (3) with a central control circuit (2). The ring structure includes several participants (DRM1- DRMn). Each participant incorporates data bus switches (ZDBS1-2) and (LDBS1-2). There are connection resistors (16) and electronic components (5) with current supply switches (ZVS1-2) and (LVS).