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PM135 Manual
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Chapter 2
Installation
Communications Conn
ections
38
PM135 Powerm
eter Series
RS
-
2
3
2
/
4
2
2
-
4
8
5
m
o
d
u
l
e
–
C
O
M
2
C
o
n
n
e
c
t
i
o
n
F
i
g
u
r
e
2
-
30
:
C
O
M
2
RS
-
2
3
2
c
o
n
n
e
c
t
i
o
n
F
i
g
u
r
e
2
-
31
:
C
O
M
2
R
S
-
4
2
2
/
4
8
5
a
n
d
1
2
D
I
/
4
R
O
-
RS
-
4
2
2
/
4
8
5
m
o
d
u
l
e
s
c
o
n
n
e
c
t
i
o
n
1
...
...
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