Westermo DDW-142-485 - Manual (Page 13)

13 6642-22511
DDW-142-485 is equipped with internal termination that is configurable through software
in RS-422/485 mode. The following termination schemes are supported:
RS-422
No termination
Rx
Terminate Rx Terminate Tx
Tx
Rx
Tx
Rx
Tx
Rx
Tx
Terminate Tx and Rx
RS-485
No termination Termination
When the unit is powered-off or during reboot, any internal termination will be
disconnected from the signal lines.
Note: There are no fail-safe biasing available for RS-422/485 signals.
Connection to console port
The console port can be used to connect to the CLI
(Command Line Interface).
The following steps needs to be taken
1. Connect the serial diagnostic cable to the console port
(use only Westermo cable 1211-2027).
2. Connect cable to your computer (USB port, if drivers are needed they can be downloaded
from our Web page).
3. Use a terminal emulator and connect with correct speed and format (115200, 8N1) to the
assigned port.
For more information about the CLI, see the WeOS management guide.
I/O connection (for details see page 11 and 14)
Cable 1211-2027
Bottom view
Accessories
Description
Art no
Westermo console cable 1211-2027
Console port
(for more details see also page 10)
Position Direction* / description
No.1 GND
No. 2 Out / Tx
No. 3 In / Rx
* Direction relative to this unit.