Westermo TD-36 - Manual (Page 19)

19 6618-2202
RS-422/485
Power
I/O Input/Relay Output
LED Indicators
(for details see page 22)
* Direction relative to this unit.
* Direction relative to this unit
Position Direction* Description Product marking
No. 1
In AC: Neutral
DC: –Voltage
No. 2 In AC: Line
DC: +Voltage
Position Direction* Description Product marking
No. 1 In R+ ( A’) Receive RS-422/485 4-wire R+
No. 2 In R– (B’) Receive RS-422/485 4-wire R–
No. 3 Out T+ (A) Transmit RS-422/485 4-wire T/R+
In/Out T+ (A/A’) Transmit/Receive RS-485 2-wire
No. 4 Out T– (B) Transmit RS-422/485 4-wire T/R–
In/Out T+ (A/A’) Transmit/Receive RS-485 2-wire
Position Direction* Description Product marking
No. 1 In Input + +
No. 2 In Input – –
No. 1 In/Out Normal
closed contact
NC
No. 2 In/Out Common
contact
C
No. 3 In/Out Normal
open contact
NO