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Electro Industries/GaugeTech
Doc # E107706 V1.25 5-2
RJ-11 Telephone Line allows a Nexus Meter with the Internal Modem Option to communicate with
a PC. No other hardware is necessary for this easy-to-use connection. The Nexus 1250/1252 Meter
with the Internal Modem Option can connect via RS-485 to other Nexus Meters in local or remote
sites in a daisy chain configuration, as depicted below.
The Nexus Meter with the Internal Modem Option has a unique label; Port 2 is labeled Modem
Gateway. If you are going to use RS-485 to connect multiple Nexus 1250/1252 meters, you MUST
use the Modem Gateway. For more details, see Chapter 10 of this manual.
RJ-11
RS-485
Figure 5.2: RJ-11 Communication with Internal Modem Option
PC
Originate Modem
(or Internal to PC)
Daisy Chain