Rs485 Network Termination Settings; Rs232/Rs485 Jumper Settings; Table 3: Rs232/Rs485 Jumper Settings; Table 4: Rs485 Termination Settings - Unitronics Vision 120 OPLC User Manual

Vision120 OPLC™ User Guide

RS485 Network Termination Settings

The jumper settings shown in Table 4 determine whether the controller can function as an
end device in a RS485 network. Note that the factory default setting is ON. If the OPLC is
not a network end device, set both jumpers to OFF.

RS232/RS485 Jumper Settings

The tables below show how to set a specific jumper to change the functionality of the
controller.
To open the controller and access the jumpers, refer to the instructions on the next page.
Table 3:
COM 1
To use as:
RS232*
RS485
Table 4:
COM 1
Termination
ON*
OFF
•
Default factory setting.
22
RS232/RS485 Jumper Settings
JP1 JP2 aaaaaaa
A A
B B
RS485 Termination Settings
JP3 JP4 aaaaaaa
A A
B B
COM2
To use as:
RS232*
RS485
COM2
Termination
ON*
OFF
JP5 JP6
A A
B B
JP7 JP8
A A
B B