MR-0114 - RS-485 interface, with galvanic isolation

The MR-0114 submodule provides the conversion of the serial interface TTL signals to the galvanically isolated RS-485 interface. This interface operates in a half-duplex mode, and makes multipoint (multidrop) linking of participants possible. Proper function requires correct termination of the communication line (see below). Galvanic isolation of the serial interface is provided by a built-in converter and no external supply is required. More details concerning the submodule, its internal connection and settings are specified in the documentation TXV 004 03.

Table 1 Wiring of the CH2 serial channel connector fitted with the MR-0114 submodule.