Westermo LD-02 - Handbuch (Seite 11)

11 6156-2002
Direction Circuit no. CCITT V.24 Signal name
DCE 9-pin D-sub Circuit no.
O 1 109 DCD/Data Carrier Detect
O 2 104 RD/Received Data
I 3 103 TD/Transmitted Data
I 4 108/2 DTR/Data Terminal Ready
– 5 102 SG/Signal Ground
O 6 107 DSR/Data Set Ready
I 7 105 RTS/Request To Send
O 8 106 CTS/Clear To Send
NC 9
Direction Circuit CCITT V.11
no. Description
Receiver 1 A’ (R+)
Receiver 2 B’ (R-)
Transmitter 3 A (T+)
Transmitter 4 B (T-)
5 1) Shield
Direction Circuit no. Description
Channel 2 Channel 3
Receiver 9 2 R+
Receiver 8 1 R-
Transmitter 7 4 T+
Transmitter 6 3 T-
5 5 1) Shield
RS-485/422 (channel 4)
Connection Power supply
no.
1 -Voltage
2 +Voltage
Connection Power supply
no.
L 115*/230V
N AC power
PE, Protective Earth
Power connection LD-02 AC
3 position screw-terminal Power connection LD-02 DC
2 position screw-terminal
Connections
RS-232 (channel 1)
W1, balanced 10mA (channel 2 and 3)
I=input O=output. The LD-02 is a DCE (Data Communication Equipment).
NC=not connected.
* LD-02 115V
RS-485/422 connection (channel 4)
1) If shielded cable is used, connect the shield only at one end to avoid ground loop currents.
LD-02 LD-02 equipment
RS-422/485
Transmitter
Twisted pairs
4-wire
1
2
3
4
5
Shield 1)
A’
B’
A
Receiver
B
A’
B’
A
B
Trans-
mitter
Receiver
equipment
RS-422/485
Transmitter/
Receiver Transmitter/
Receiver
Twisted pairs
2-wire
3
4
5
A/A’
B/B’ A/A’
B/B’
Shield 1)