Laurel Electronics Laureate XLog Datalogging Software - Manual (Page 5)

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For connection of multiple meters to a single Ethernet line, a first Laureate meter
can be equipped with an Ethernet-to-RS485 converter board (ordering option 8). This
board has an RJ45 jack to connect to a LAN via an Ethernet cable plus an RJ11 jack to
connect to an RS485 bus with up to 30 additional meters. These meters must be
equipped with an RS485 interface board (ordering option 2). The connection between
the meters is via Laurel’s CBL03 RS485 Data Cable for Meters. Daisy chaining of
meters without a hub uses two RJ11 jacks wired in parallel on each RS485 interface
board. Laureate Ethernet Nodes and any Devices attached to them are automatically
discovered by Datalogging Software when the PC and first Laureate meter are on the
same LAN. Node discovery over the Internet requires that the IP address of the remote
router be supplied.
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For connection of multiple meters and transmitters to a single Ethernet line, a DIN
rail mounted LTNET485 Ethernet-to-RS485 Device Server can support a mix of up to 31
Laureate meters and LT transmitters on an RS485 bus. The LTNET485 has an RJ45
jack for connection to the Ethernet, an RJ11 jack for an RS485 connection to meters
with an RS485 interface board (ordering option 2), and five screw terminals for an
RS485 connection to LT transmitters. The connection between meters is via Laurel’s
CBL03 RS485 Data Cable for Meters. Daisy chaining of meters without a hub uses the
dual RJ11 jacks of the RS485 interface board, which are wired in parallel. The
connection between transmitters can be via 3 discrete parallel wires (half duplex) or
5 discrete parallel wires (full duplex). Laureate Ethernet Nodes and any Devices
attached to them are automatically discovered by Datalogging Software when the PC
and LTNET485 are on the same LAN. Node discovery over the Internet requires that
the IP address of the remote router be supplied.