Apparatus for coupling two switching modules in a data ring cell

摘要

Device for connecting two network coupling modules to a network cell control device (ZKV) that controls the coupling modules. The device also has connection elements (5) that are each connected to a coupling module and via which an external unit (D0-D3) can be connected to the network. An external power supply (SV) is connected to a power supply unit (SVE). The cell control device is configured so that it can take its power from the power supply unit. The latter can be supplied by any of the external units connected to the network if the direct external power supply is lost.