Camille Bauer Gossen MetraWatt SINEAX DME 401 Betriebsanleitung Seite 30

Fig. 8 shows the connection of transducer DME 401 to the
MODBUS. The RS 485 interface can be realized by means of
PC built-in interface cards or interface converters. Both is
shown using i.e. the interfaces 13601 and 86201 of W & T
(Wiesemann & Theis GmbH). They are configured for a 2-wire
application with automatic control of data direction. These
interfaces provide a galvanical isolation and a built-in
termination network.
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Important:
– Each device connected to the bus must have a unique
address (1 to 247, default ex factory: 247)
– All devices must be adjusted to the same baudrate.