19
Chapter 3
3.2 Setting jumpers
You can configure your ARK-3389 to match the needs of your applica-
tion by setting jumpers. A jumper is the simplest kind of electrical switch.
It consists of two metal pins and a small metal clip (often protected by a
plastic cover) that slides over the pins to connect them. To “close” a
jumper, you connect the pins with the clip. To “open” a jumper you
remove the clip. Sometimes a jumper will have three pins, labeled 1, 2,
and 3. In this case, you would connect either pins 1 and 2 or pins 2 and 3.
The jumper settings are schematically depicted in this manual as follows:
A pair of needle-nose pliers may be helpful when working with jumpers.
If you have any doubts about the best hardware configuration for your
application, contact your local distributor or sales representative before
you make any changes.
3.3 COM2 RS-232/422/485 Jumper setting (J3/J4/J5)
The COM2 port located on front metal panel of ARK-3389 unit which
can be configured to operate in RS-232, RS-422 or RS-485 mode by set-
ting up the Jumper Pins of J3/J4/J5 located on internal motherboard of
ARK-3389 unit.
Table 3.1: J3/J4/J5: COM2 RS-232/422/485 select
Setting
Function
J3 (1-2 short)
(J4,J5 open)
RS-232
J4 (1-2 short)
(J3,J5 open)
RS-422
J5 (1-2 short)
(J3,J4 open)
RS-485
Содержание ARK-3389
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