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9
2.1.2 Single Multiplexer
RS-485(-) PIN No.5
RS-485(+) PIN No.4
POWER
AC 24V
AL5
AL6
GND
AL7
AL8
GND
COM
3
NC3
NO3
COM
4
NC4
NO4
AL1
GND
AL2
AL3
GND
AL4
COM
1
COM
2
NO1
NC1
NO2
NC2
AC
+
RX
-(T
X
-)
R
X
+(
T
X
+)
AC
-
(R
X
-)
FG
N
D
AC
+
AC
-
(R
X
+
)
GN
D
RS
-4
85
(RS-422)
(RX
+
)
(R
X
-)
R
X
+(
T
X
+)
R
X
-(T
X
-)
AC 24V
POWER
POWER
AC 24V
BNC
MULTIPLEXER
SPOT MONITOR
MAIN MONITOR
BNC
BNC
AWG # 24
Figure 3 – Single Multiplexer