XL-0471 module – an example of Foxtrot connection, the RS-485 interface

If you require an interconnection of the Foxtrot communication channels (e.g. an implementation of PLC network with the RS-485 interface), or if you want to conveniently connect other devices to the Foxtrot communication interface, or if you want to increase the resistance to surge, you can use the XL-0471 module. The module contains a hub of the RS-485 interface, and the straight-through connection (A and B terminal blocks) goes directly through the module, while the branching (C terminal block) is protected by a surge protection (lightning arrester, transil). For an example of the module connection see Fig. 1. The module also allows direct connection of the cable shielding. Shielding of straight-through branches is interconnected and terminated on the G1 terminal (e.g. in a straight-through cable the shielding does not have to be earthed in the module); the shielding of the branch is connected to the G2 terminal, to which the surge protection is also connected and its connection to the switchboard earthing is assumed (the functional earthing).

Fig. 1 The diagram of connection of the XL-0471 module (interconnection of the Foxtrot systems, RS-485).