Westermo TR-36 User Manual
Page 12
12
6614-2202
Leased Line
Position
Direction*
Description
1
Out
4-wireTransmit
In/Out
2-wire Receive/ Transmit
2
Out
4-wireTransmit
In/Out
2-wire Receive/ Transmit
3
In
4-wire Receive
In/Out
2-wire Receive/ Transmit at Leased line PSTN backup
4
In
4-wire Receive
In/Out
2-wire Receive/ Transmit at Leased line PSTN backup
* Direction relative this unit
RS-422/485
Position
Direction Description
Product
marking
1
In
R+ (A’) Receive
RS-422/485 4-wire
R+
2
In
R– (B’) Receive
RS-422/485 4-wire
R–
3
Out
T+ (A) Transmit
RS-422/485 4-wire
T/R+
In/Out
T+ (A/A’) Transmit/Receive
RS-485 2-wire
4
Out
T– (B) Transmit
RS-422/485 4-wire
T/R–
In/Out
T+ (A/A’) Transmit/Receive
RS-485 2-wire
RS-232 (DCE)
Position
D-sub
Direction*
Description
Product marking
1
Out
Data Carrier Detect (DCD)
DCD
2
Out
Received Data (RD)
RD
3
In
Transmitted Data (TD)
TD
4
In
Data Terminal Ready (DTR)
DTR
5
–
Signal Ground (SG)
SG
6
Out
Data Set Ready (DSR)
DSR
7
In
Request To Send (RTS)
RTS
8
Out
Clear To Send (CTS)
CTS
9
Out
Ring Indicator (RI)
RI
* Direction relative this unit