Interconnection of two Foxtrot systems using a serial channel with the RS-485 interface is shown in Fig. 1. The connection assumes two systems and thus the bus terminator is connected on both sides. If there are several systems on the bus, the terminator (terminals BT+ and BT-) is only connected at the endpoint systems on the bus. Further parameters (conductors, installation principles) are applied in accordance with previous chapters relating to the RS-485.
Fig. 1 The diagram of interconnection of two Foxtrot systems with the RS-485 interface (the MR-0114 submodule).