Westermo TF-300 - Manual (Page 8)

8 6606-2201
TD-300
9
R+ R- T- T+
PWR
RD
TD
RTS
CTS
DCD
TX
8 7 6
RS-422/485 RS-232
LINE CONNECTION
LINE
POWER
S3:1–6
V.24/RS-232-C
SG RD TD
5 4 3
CTS
2
RTS
1
RX N L
12
3
4
56789
S4:1–9
Connections TD-300
RS-422/485 connection
(9-pole screw terminal) Line connection
(4-pole screw terminal)
Direction No. Description
Receiver 9 A’ (R+)
Receiver 8 B’ (R–)
Transmitter 7* A (T+)
Transmitter 6* B (T–)
5 Shield
Direction
Pin no.
line
Description
Not used 3 R
Not used 4 R
Receiver/Transmitter 1 T
Receiver/Transmitter 2 T
*) Two wire connection
The definations R+/R–, T+/T– can be
various between different manufactures.