Micom P634 - Page 316

19Z6481B
First participant
connect. to the line
(e.g. the master)
XXXX
Last participant
connect. to the line
D1[T]
D2[R]
-X9/-X10
P634
200 ... 220 Ω
D1[T]
D2[R]
Device with half-
duplex interface
P634 XXXX
D1[T]D2[R] D1[T]D2[R]
-X9/-X10
Fig. 5-14: 4-wire data link. (Note: the setting MAIN: Chann.assign.COMM1/2 decides about whether -X9
(=channel 1) or -X10 (=channel 2) is used.)
For CH1/CH2 connection diagram, please refer to Section 5.7, (p. 5-22)
P634 5 Installation and Connection
5-20 P634/EN M/R-42-A // P634‑311‑653