Westermo DDW-226 - Manual (Page 7)

7 6642-22402
Position
Direction*/
description Input/Output
values
1
2
3
4
1 IO / Relay output + U
in
= 60 VDC max
U
in
= 80 mA max
2 IO / Relay output –
3 IO / Digital in +
U
in
= 60 VDC max
U
in
= 10 mA max
4 IO / Digital in –
Position
Direction/
descripton Input/Output
values
1 In/out / GND
U = 3.3 VDC max
I = 24 mA max
2 Out / Tx
3 In / Rx
Position
Direction/
descripton
Input values
1 Out / VBUS
U
out
= 5 VDC max
I
out
= 500 mA max
2 In/out / D–
3 In/out / D+
4 GND
Shield PE
Position Descripton Input/Output values
1 Out / Data Set Ready (DSR)
U
max
= ± 12 Vpk
I
max
= ± 60 mA
Data rate:
0.3 – 115.2 kbit/s
2 Out / Data Carrier Detect (DCD)
3 In / Data Terminal Ready (DTR)
4 In/Out / Signal Ground (SG)
5 Out / Receive Data (RD)
6 In / Transmit Data (TD)
7 Out / Clear To Send (CTS)
8 In / Request To Send (RTS)
Shield In/Out / Connected to PE