Electro Industries 1252 Installation And Operation Manual page 61

RJ-45 Network Connection allows a Nexus Meter with the Internal Network Option to
communicate with multiple PC's concurrently. No other hardware is necessary for this easy-to-use
connection. The Nexus Meter with the Internal Network 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 1250/1252 Meter with the Internal Network Option has a unique label; Port 2 is labeled
Ethernet Gateway. If you are going to use RS-485 to connect multiple Nexus meters via the net-
work, you MUST use the Ethernet Gateway. For more details, see Chapter 11 of this manual.
10/100BaseT
RS-485 MODBUS/RTU
or 10BaseT
RJ-45
MODBUS/TCP
over Ethernet
Daisy Chain
Network
Figure 5.3: RJ-45 Communication with Internal Network Option
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Electro Industries/GaugeTech
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Doc # E107706 V1.25