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CHAPTER 4: COMMUNICATION INSTALLATION
22
EPM 5000 series Advanced Power Meters
GE Multilin
RS-485 Hookup Diagram (4 wire) Full 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
Gnd
R+
T+
R-
T-
UNICOM 2500
(Bottom View Shown)
RS-232
RS-485
T+
T-
T+
T-
R-
R+
R-
R+
Receive Pair
Transmit Pair
Enlarged view of twisted pair segments
Note: This does not
represent a twisted pair.
It shows the cross-over
from R to T between the
Unicom and the rest of
the bus.
Figure 4.6:
4-Wire RS-485 Communication Connection Installation full duplex, detail view
Connecting 4-Wire bus to RS-485 Port:
•
Connect the T- wire of the Unicom 2500 to the R- on the RS-485 port
•
Connect the R- wire of the Unicom 2500 to the T- on the RS-485 port
•
Connect the T+ wire of the Unicom 2500 to the R+ on the RS-485 port
•
Connect the R+ wire of the Unicom 2500 to the T+ on the RS-485 port
Summary of Contents for EPM 5200
Page 2: ......
Page 30: ...CHAPTER 4 COMMUNICATION INSTALLATION 26 EPM 5000 series Advanced Power Meters GE Multilin ...
Page 70: ...CHAPTER 10 PROGRAMMING GROUP 1 66 EPM 5000 series Advanced Power Meters GE Multilin ...
Page 88: ...CHAPTER 14 EXITING PROGRAMMING MODE 84 EPM 5000 series Advanced Power Meters GE Multilin ...
Page 94: ...CHAPTER 15 PROGRAMMING QUICK REFERENCE 90 EPM 5000 series Advanced Power Meters GE Multilin ...