connected with a wire jumper. An external resistor is therefore not necessary.
The second resistor must be connected externally to the device (resistor order
number see Chapter “Accessories and Spare Parts”).
19Z6480A
First participant
connect. to the line
(e.g. the master)
Last participant
connect. to the line
Device with half-
duplex interface
P631
P631
XXXX
XXXX
D1[T]
D2[R]
D1[T]
D2[R]
200 ... 220 Ω
-X10
-X10
D1[T]D2[R] D1[T]D2[R]
Fig. 5-11: 2-wire data link.
P631
5 Installation and Connection
5-16 P631/EN M/R-11-C // P631-310-650