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Chapter 3 Communication Installation
RS-485 Hookup Diagram (2 wire) Half Duplex: Detail View
UNICOM 2500
(Bottom View Shown)
Figure 3.3 2-Wire RS-485 Communication Connection Installation Half Duplex Detailed View
NOTE: Communication is supported over Belden 3074F and Belden 9841 cable types.
Communications
R
T
T-
R-
T+
R+
Gnd
GE Industrial Systems
RS-485
Communications
Port
Model#
SF485DB
G
R+ T+
R-
T-
RS-485
Port
Model#
SF485DB
G
R+ T+
R-
T-
12
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