DCB Ether Series, Руководство пользователя

Страница: 61 / 64

Specifications
53
Appendix B
RS-422/ RS-485
Interface
This Appendix describes the RS-422/485
interface. This interface option may be jumper
configured in the field or pre-configured at
the factory.
Introduction
The 9-pin serial connector may be used for either RS-232 or RS-
422 (4-wire RS-485 point-to-point) operation by changing
internal jumpers.
Changing the Setting
Remove the main board from the case by removing two screws
from the rear panel. There is a row of jumpers and three rows of
pins adjacent to the serial connector.
RS-232 Setting
ALL jumpers should be placed in the positions nearest the
board edge.