GE EPM 5300 RS-485 Hookup Diagram 4 wire Full Duplex, RS-485 Communications Port Model#SF485DB

CHAPTER 4: COMMUNICATION INSTALLATION

RS-485 Hookup Diagram (4 wire) Full Duplex

5300P Instruments (rear view)

RS-485

Communications Port

Model#SF485DB

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.

RS-485

UNICOM 2500

(Bottom View Shown)

RS-232

PC

R+ R- T+ T-

Figure 4.5: 4-Wire RS-485 Communication Connection Installation full duplex

—Detail view on following page

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

GE Multilin EPM 5000 series Advanced Power Meters 21