beautypg.com

7 rs-485 wiring (continued), Internal modem, Local computer – E-Mon E50-6003200J*-N-KIT User Manual

Page 22

background image

GREEN CLASS NET METER

62-0416-01

22

6.7 RS-485 Wiring (continued)

After performing these steps, all of the meters will be connected in a daisy chain

configuration. This network of meters can then be connected to the RS-485 network

and communication can be established.

Internal Modem

An optional internal modem inside one meter will communicate with the others via the

RS-485 network. Simply connect one of the two telephone jacks on the modem to the

telephone line to complete the installation.

Local Computer

A local computer installed in the building can communicate with the RS-485 network.

The computer must be connected to an RS-232 key. The RS-232 key is then

connected to an available RS-485 jack in the meter using an RJ-11 cable.

NOTE: Don’t confuse the modem’s telephone jacks with the RS-485 jacks!!!

NOTE: When using one meter with an external modem, only the telephone line is

connected. RS-485 is not needed.