3402230800/AC - 11
4 wires connection
Card settings of an intermediate cabinetOthers settings
SA1
SA2

5

R-

432 1

R +T -T +

SA1
OFF
ON
1
8
SA2
OFF
ON
1
8
SA2
SA2
SA2
SA1
SA1
SA1
5V
Rp
Rp
0V
Ra Ra
T- R-
T+ R+
R- R-
R+ R+
2
1
2
1
5V
Rp
Ra
Rp
0V
R- T-
R+ T+
T- T-
T+ T+
4
3
4
3
master
transmitt slave
receiver slave
receiver
termination
termination
receive data
slave
transmitt
receive data
slave
transmitt
transmit datatransmit data
transmit data
slave
receiver
receive data
polarity
connection if
end of the line
polarity
connection if
end of the line
Master unit Card of an intermediate cabinet Card of an end-of-line cabinet
SA2
OFF
ON
8 7 6 5 4 3 2 1
SA1
SA1
OFF
ON
8 7 6 5 4 3 2 1
SA1

Link without polarity and without termination.

SA2
OFF
ON
8 7 6 5 4 3 2 1
SA1
SA1
OFF
ON
8 7 6 5 4 3 2 1
SA1

Link with termination.