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board in an open slot in your PC, or purchase an RS-232 to RS-485 converter, such
as the CV-3222 sold by IMS.
The following table and diagram illustrate the connection of the RS-485 interface.
P IN 1
RX -
RX +
TX -
CG ND
TX +
M icroLYN X -4 (7 P in Term inal B lock)
MICRO
TM
4
P IN 1
RX -
TX -
CGND
M icroLYN X -4 (10 P in Header)
Figure 4.3: RS-485 Interface Connection
R
S
4 -
8
5
I
R
S
2 -
3
2
o t
R
C
o
n
v
e
t r
S
g i
n
l a
T
- X
T
X
+
R
- X
R
X
+
C
G
N
D
Table 4.2: RS-485 Interface Connection
TX -
TX +
RX -
CG ND
RX +
RS -232 - RS-485
Converter
Recom m ended IM S
Part # CV -3222*
TX +
TX -
R X +
R X -
C G N D
*If your PC is equipped
with an RS -485 board,
no converter is necessary.
Connect R S-485 lines directly
to Host PC as shown.
t n
r e
a f
c
e
S
n i
g
e l
M
c i
o r
S
4 -
8
5
M
c i
r e
S
g i
n
l a
R
- X
R
X
+
T
- X
T
X
+
C
G
N
D
H ost PC
TX
RX
CG ND
L
Y
N
X
S
y
s
e t
m
o r
L
Y
N
X
1
0
P
n i
7
P
n i
H
e
a
d
r e
T
r e
m
n i
l a
7
3
6
4
8
5
9
7
1
, 0
5
6
17
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