Instructions

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4.3. Connecting BiDiB devices
Info
BiDiB is a universal data bus that enables bidirectional communication between all stationary
components of a digital control system.
Connection: RJ45
Connection options
At the BiDiB interface of the mc², digital commands and track signals are output and the
feedback signals from the BiDi bus are received.
For the connection of max. 31 BiDiB nodes of
one level, e.g.
 BiDiB accessory decoders
 BiDiB feedback modules
 BiDiB boosters
A supply voltage of 12 V is applied to the BiDiB interface. BiDiB nodes can be supplied with a
current of 500 mA in total, which do not require any additional current for their basic functions
(e.g. feedback unit). If the current requirement of the connected BiDiB nodes is greater, an
additional power supply is required (e.g. BiDi-Power, art. no. 46-09116 or 46-09017).
The mc² automatically detects the connected BiDiB nodes. You can display technical information
about the nodes and the structure of the BiDi bus on your system in the menu item "Operation /
BiDiB" of the mc²-Toolbox.
Notice:
The total current of all external digital devices that are connected to the various interfaces of
the mc² and do not have their own power supply must not exceed 1.2 A. Otherwise, the
mc² automatically switches off the power supply for the external devices.
4.8 | Connections