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2.1.2 Single Multiplexer
RS-485(-) PIN No.5
RS-485(+) PIN No.4
POWER
AC 24V
AL5
AL6
GND
AL7
AL8
GND
COM3
NC3
NO3
COM4
NC4
NO4
AL1
GND
AL2
AL3
GND
AL4
COM1
COM2
NO1
NC1
NO2
NC2
AC+
RX-(TX-)
RX+(TX+)
AC-
(RX-)
FGND
AC+
AC-
(RX+)
GND
RS-485
(RS-422)
(RX+)
(RX-)
RX+(TX+)
RX-(TX-)
AC 24V
POWERPOWER
AC 24V
BNC
MULTIPLEXER
SPOT MONITOR MAIN MONITOR
BNC
BNC
24AWG #
Figure 3 – Single Multiplexer