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The RS-485 communications circuit is power-limited. Figure 2-27 shows typical interconnections
among the ARIES Control Unit and the peripheral devices using a single communications channel.
Relay 1
Relay 2
Relay 3
Trouble
S2
-
-
PSU
AC IN
NO
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
Style 4
J12
N
L
Figure 2-27. Single-Channel RS-485 Wiring to Peripheral Devices
August 2013
2-26
P/N 06-236530-001
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