System for adjusting solar cell modules according to the sun's position

System (SYS) for adjusting solar cell modules (SZM) of a solar installation (SA) according to the sun's position, comprising a drive device (AER) for a group of drive units (AE), for adjusting the solar cell modules (SZM), wherein a control unit (ASE) is associated with each drive unit (AE), and the drive units (ASE) are connected to a shared power supply (EV) as well as a data bus (DS),

• characterized in that
• the group of control units (ASE) are connected via a shared power and data transmission line (EDL) to a bus coupler (BK), the bus coupler (BK) is coupled to the power supply (EV) for coupling energy, as well as to the data bus for coupling data, into the power and data transmission line (EDL), and one of the control units (ASE) is designed as master control unit (MASE), and the additional control units (ASE) of the group are designed as slave control units (SASE), and controllable via the power and data line (EDL) by means of the master control unit (MASE).