Laurel Electronics LTNET485 DIN Rail Mounted Ethernet-to-Serial Device Server - Manual (Page 2)

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 2
Both methods automatically discover all Nodes on a LAN or
WAN, plus any devices connected to each Server Node via an
RS485 bus. They are used to configure each Node, such as
setting communication parameters, naming the Node and asso-
ciated devices, entering email addresses for alarm notification
and data requests, selecting the Node's time zone for time-
stamping of emails and streaming data, and upgrading firmware.
Once configuration data has been stored in flash memory of all
Nodes, the PC can be disconnected. Details are in our Ethernet
Manual. Instruments from other manufacturers can be operated on the
RS485 bus under control of our LTNET485 Ethernet-to-Serial
Device Server if the host computer supplies commands and
accepts responses suitable for these instruments.
The LTNET485 mounts on a DIN rail. It looks like a Laurel
transmitter, but does not include a signal conditioner board or
relays
Specifications
Serial Data I/O
Supported protocols
Ethernet connection
Ethernet cable
Ethernet compliance
Devices per Ethernet line
RS485 connection
RS485 compliance
Devices per RS485 line
Data rates to Laurel devices
Rates to non-Laurel devices
Isolation
ESD Protection
EMI Immunity
EFT Protection
Short Circuit Protection Modbus TCP, Modbus RTU, Modbus ASCII, Laurel ASCII
RJ45 jack
10/100Base-T
IEEE 802.3
Server Node plus up to 31 Laurel devices on RS485 bus
RJ11 jack plus five screw terminals for discrete data wiring.
EIA/TIA-485
Up to 31 Laurel meters and transmitters.
300, 600, 1200, 2400, 4800, 9600, 19200 baud
Up to 614400 baud
250V rms working, 2.3 kV rms per 1 min test
15 kV per IEC 1000-4-2
10 V/m per IEC 1000-4-3
2 kV per IEC 1000-4-4
Continuous
Power Input
Standard Power
Low Power Option
Power Frequency
Power Isolation
Power Consumption 85-264 Vac or 90-300 Vdc (DC operation not UL approved)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
2W typical, 3W with max excitation output
Mechanical
Dimensions
Mounting
Electrical Connections 129 x 104 x 22.5 mm case
35 mm rail per DIN EN 50022
Plug-in screw-clamp connectors
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
Cooling Requirement 0°C to 55°C
-40°C to 85°C
95% at 40°C, non-condensing
Mount transmitters with ventilation holes at top and bottom.
Leave 6 mm (1/4") between transmitters, or force air with a fan.
Pinout Ordering Guide
Create a model a model number in this format: LTNET485-1
Transmitter
Type LTNET485 Laureate Ethernet-to-Serial
Device Server
Power 1 Isolated 85-264 Vac
2 Isolated 12-32 Vac or 10-48 Vdc