Westermo MA-47 - Manual (Page 5)

12 6047-2002
Direction Pin CCIT V.11
no. Description
Receiver 1 A’ (R+)
Receiver 2 B’ (R-)
Transmitter 3 A (T+)
Transmitter 4 B (T-)
Shield
Connections
Line connection
(5-Position screw-terminal)
Direction Connection CCITT V.24 Signal name
Code
I 2 103 TD/Transmitted Data
O 3 104 RD/Received Data
I 4 105 RTS/Request To Send
O 5 106 CTS/Clear To Send
O 6 107 DSR/Data Set Ready
– 7 102 SG/Signal Ground
O 8 109 DCD/Data Carrier Detect
I 20 108/2 DTR/Data Terminal Ready
I = Input O = Output on MA-47
Terminal connection (DCE)
(RS-232-C/V.24/V.28, 25-Polig D-sub, female)
Line connection
1) If shielded cable is used, connect the shield only at one end to avoid ground currents.
Look right for a section of rack RV-01 with
one MA-47 mounted.
Terminal connection to a 25-position D-sub(female) connector on MA-47.
Line connection to a 5-position detachable screw-terminal, which is mounted on the
male connector located at the rear of RV-01.
1
13
25
14
1
2
3
4
5
1 2 3 4 5
Twisted pairs
A’
B’
A
B
Transmitter
Receiver
MA-47
Receiver
Transmitter
Shield 1)
1
2
3
4
5
3
4
5
A/A’
B/B’
Transmitter/
Receiver
A/A’
B/B’
MA-47
Transmitter/
Receiver
2-wire 4-wire
Twisted pairs
RS-422
equipment
A
B
A’
B’
RS-485
equipment
Shield 1)
The definations R+/R–, T+/T– can be various
between different manufactures.