GE EPM 3000P - Manual (Page 17)

Chapter 3 Communication Installation
RS-485 Hookup Diagram (2 wire) Half Duplex: Detail View
G R+ T+ R- T- G R+ T+ R- T-
RS-485
Communications
Port
Model#
SF485DB
RS-485
Communications
Port
Model#
SF485DB
R
T
RS-232 RS-485
Gnd
R+
T+
R-
T-
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.
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GE Industrial Systems