Westermo LD-63 HV - Manual (Page 13)

LD-64
Rx1
Rx2
TD RD C E PWR
OPTO LINK MONITOR
Ch1
C E
Ch2
1 2 3 4 5 L N
RS-422/485 POWER
R+
Rx2
Tx1
Tx2
R- T+ T-
1 2 3 4 5 L N
RS-422/485 POWER
R+
Rx2
Tx1
Tx2
R- T+ T-
R +
RS-422
equipment
R – T +
SG TD RD
T –
RS-485
equipment
T + T –
RS-232/V.24
equipment
*) The designations T+, T–, R+, R– are not standardised and may vary between different manufactures. The first step
in fault finding is to reverse the cables (swap T+ with T– and/or R+ with R–). Please note that this should be
done only at one end!
* *
13 6072-2005
How to connect
Connection of RS-232/V.24, RS-422, RS-485
Fibre optic connection
LD-63
RX1 RX2
TX2 TX1
RS-422/485 RS-232/V.24 or
RX1 RX2
TX2 TX1
LD-63
RS-422/485 RS-232/V.24 or
LD-63
RS-422/485 RS-232/V.24 or
RX1 RX2
TX2 TX1
NB When a multidrop connection ends with an LD-63 and the fibre pair is
connected on channel 2, the switch S1:2 must be set (Y-mode)