9
2.1.2 Single Multiplexer
Figure 3 – Single Multiplexer
AWG # 24
BNC
BNC
MAIN MONITOR
SPOT MONITOR
MULTIPLEXER
BNC
AC 24V
POWER
POWER
AC 24V
R
X
-(
T
X
-)
R
X
+
(T
X
+
)
(R
X
-)
(R
X
+
)
(RS-422)
R
S
-4
85
G
N
D
(R
X
+
)
A
C
-
A
C
+
F
G
N
D
(R
X
-)
A
C
-
R
X
+
(T
X
+
)
R
X
-(
T
X
-)
A
C
+
NC
2
NO
2
NC
1
NO
1
CO
M2
CO
M1
AL4
GN
D
AL3
AL2
GN
D
AL1
NO
4
NC
4
CO
M4
NO
3
NC
3
CO
M3
GN
D
AL8
AL7
GN
D
AL6
AL5
AC 24V
POWER
RS-485(+) PIN No.4
RS-485(-) PIN No.5
