E-Mon E34-6003200R*KIT - Manual (Page 20)

CLASS 3400 METER
62-0391-01 20
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 internal modem, only the telephone line is
connected. RS-485 is not needed.
6.8 RS-232 Communications
6.8.1 Hardwired System using the RS-232 Communication Key
The RS-232 communications key allows you to connect Class 3400 meters to a
personal computer that has the E-Mon Energy™ software installed. The computer
communicates with the meters through the RS-232 key.
The RS-232 key must be located within 15 feet of the host computer.