GE EPM 5200 RS-485 Hookup Diagram 4 wire Full Duplex, Connecting 4-Wire bus to RS-485 Port

RS-485 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

RS-232

UNICOM 2500

(Bottom View Shown)

PC

R+ R- T+ T-

FIGURE 4–5: 4-Wire RS-485 Communication Connection Installation full duplex

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

4–24 EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL