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Doc# E166703 5-5

5: Communicating with the Meter

Electro Industries/GaugeTech

The Leader In Power Monitoring and Smart Grid Solutions

Electro Industries/GaugeTech

The Leader In Power Monitoring and Smart Grid Solutions

Electro Industries/GaugeTech

The Leader In Power Monitoring and Smart Grid Solutions

5.1.2.1: Using the Unicom 2500

The Unicom 2500 provides RS485/RS232 and Fiber Optic/RS232 conversion. In doing

so it allows an MP200 unit with RS485 communication to communicate with a PC. See

the Unicom 2500 Installation and Operation Manual for additional information. You

can order the Unicom 2500 and the recommended communication cable for it

from EIG’s webstore: www.electroind.com/store. From the left side of the web-

page, select Communication Products for the Unicom 2500 and Cables and Accesso-

ries for the RS485 4-wire to 2-wire cable. Figure 5.6 illustrates the Unicom 2500

connections for RS485.

NOTE: We recommend you use EIG’s 4-wire to 2-wire communication cable

so you do not have to use jumper wires.

Figure 5.6: Unicom 2500 with Connections

(+)

(-)

(+)

(-)

Jumpers:

Short TX(-) to RX(-) becomes (-) signal

Short TX(+) to RX(+) becomes (+) signal

TX(-) RX(-) TX(+) RX(+) SH

RS232 Port

UNICOM 2500

MP200 Metering System’s

RS485 Port

Shark MP200 User Manual

Questions and Answers: