CPC 810-2020 매뉴얼 - 페이지 4
{카테고리_이름} CPC 810-2020에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. CPC 810-2020 11 페이지. 16-ai
페이지 인쇄c.
Jumpers JUlrJU2rJU3
set terminating resistance for
the
RS-485 communication bus.
DEVICES
AT
THE
END
OF THE
EXPANSION
COMMUNICATION
BUS
REQUTRE TERMINATING RESISTORS FOR
PROPER
OPERATTON
OF THE
RS.485
LINE.
These jumpers
are located
on
the
l-5AI board
right
next to the
RS-485 communication
terminal
block.
The jumper
positions
depend
on
how
the
Expansion
Communication
Bus
is wired.
Use
FIG.1, FfG. 2
and
the configurations
bel-ow
to constuct a
2-conductor
shielded
wire cable.
The
cable
should
be
20
gauge
Belden
#91-54
or eguivilent.
The
1-602
is
used below
as
an example. Other devices
communicating
on
the
Expansion
Bus
will follow the
same
general rule.
rt
15AI---
-L6O2--
--
1
6AI
*
*
15AI----15
02
----L6AI----16AI
*
:tL6O2----l-5AI*
:t
1 6 0 2
---- 15AI----
16AI it
rc
LG
O2----
1
6AI----
1
6AI----
L
6AI
!t
*
marked
devices
reguire terminating
resistors
L.
16AI Board
set
up as an
END
device (*
marked)
requires
jumpers,
JUI-,
JVz,
JU3
to all be in their
positions
CLOSEST
to the
RS-485 communication
terminal
block.
2.
16AI Board
set
up as a
MIDDLE
device
(unnarked)
reguires
jumpers,
JUL
t
JV2,
JU3
to all be in their
positions
AWAY
from
the
RS-485 communication
terminal
bIock.
3.
L6O2
set
up as a
MIDDLE
or
END
device
(marked/unmarked)
reguires
no
changes
since
terminating resistors are not
needed.
3