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.
12
GE Industrial Systems