Vision™ OPLC™
Unitronics
11
Setting RS232/RS485 Communication Parameters, V430J
This port may be set to either RS232 or RS485 via DIP switches:
The table shows the DIP switches factory default settings. Use the table to adapt the settings.
Switch Settings
1
2
3
4
5
6
RS232*
ON
OFF
OFF
ON
OFF
OFF
RS485
OFF
ON
ON
OFF
OFF
OFF
RS485 with
termination**
OFF
ON
ON
OFF
ON
ON
* Default factory setting
** Causes the unit to function as an end unit in an RS485 network
USB Port
Caution
The USB port is not isolated.
Make sure that the PC and the controller are grounded to same potential.
The USB port may be used for programming, OS download, and PC access.
Setting RS232/RS485 Communication Parameters, V130/V350/V130J/V350J
This port may be set to either RS232 or RS485 via jumper.
The accompanying figure shows the jumper factory
default settings.
These jumpers may be used to:
Set communications to RS485, by setting both COMM
jumpers to ‘485’.
Set RS485 termination, by setting both TERM jumpers
to ‘OFF’.
To access the jumpers, you must open the controller
according to the instructions on page 12.
