Serial-to-Ethernet Device Servers
Lantronix SDSTX3110-124-LRT-B Hardened 4-Port Serial Device Server
The SDSTX3110-124-LRT-B is a hardened serial device server that connects four RS-232, RS-422 or RS-485 devices to Ethernet through two Fast Ethernet ports, built for cabinets and field sites from -40°C to +70°C.
From $632.50
Overview
About the Lantronix SDSTX3110-124-LRT-B
The SDSTX3110-124-LRT-B (sometimes searched as SDSTX3110) moves serial data from PLCs, meters, card readers and other legacy equipment onto an IP network. Each of its four DB9 ports is independently set to RS-232, RS-422 or 2- or 4-wire RS-485, so a mix of devices can share one unit. Two 10/100Base-TX ports can connect to one server or to multiple redundant servers.
Operating modes include Virtual COM, serial tunnel, TCP server, TCP client and UDP. Included COM port redirector software presents each serial port as a virtual COM port on a Windows server, or two units can be paired to tunnel serial links across the network. Baud rates run from 110 bps to 460 kbps with full RS-232 handshake lines and XON/XOFF, RTS/CTS or DTR/DSR flow control. Data is protected with SSL encryption, management uses HTTPS and SSH, and an IP whitelist limits access. Events are reported by syslog, email and SNMP traps.
The IP30 unit accepts 12 to 48 VDC on redundant inputs, draws 4.32 W and is certified to operate from -40°C to +70°C. It is tested for EMC immunity under the EN 61000-4 series and for shock, vibration and free fall to IEC 60068-2, and status LEDs show power, Ethernet link and serial TX/RX activity at a glance.
Key capabilities
- Four software-selectable serial ports
- Each DB9 port runs RS-232, RS-422 or 2- or 4-wire RS-485 at 110 bps to 460 kbps, so mixed field devices share one server.
- Dual Ethernet for redundancy
- Two 10/100Base-TX ports can be configured to one or multiple redundant servers, keeping serial data flowing if one path fails.
- Encrypted, access-controlled
- SSL encrypts serial data, HTTPS and SSH secure management, and an IP whitelist restricts which hosts can connect.
- Hardened for field cabinets
- IP30 enclosure, -40°C to +70°C operation and 12-48 VDC redundant power inputs suit roadside, plant-floor and utility enclosures.
- Virtual COM and tunneling
- COM port redirector software creates virtual COM ports on Windows servers, or two units tunnel serial links across Ethernet.
How to choose the right SDSTX3110-124-LRT-B part number
SDSTX3110-124-LRT-B is a single model: four RS-232/422/485 DB9 serial ports plus two 10/100Base-TX RJ-45 ports, powered from 12 to 48 VDC. Choose a DIN-rail power supply to match your cabinet: the 25135 provides 24 VDC at 10 W, which covers the unit's 4.32 W draw, and the 25130 provides 48 VDC at 39.8 W where a 48 V bus also feeds other equipment.
Configure & order
Find your SDSTX3110-124-LRT-B part number
Every orderable SDSTX3110-124-LRT-B configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.
SDSTX3110-124-LRT-B
$632.50
Ships on backorder
Complete the deployment
Accessories, renewals & add-ons
Everything sold for the SDSTX3110-124-LRT-B, organized by what it does — power— each with why you'd add it.
Power
2 items
25135
25135
Industrial DIN Rail mounted power supply with 24VDC output and a 10 Watts power rating. It supports 85~264VAC, 120~370VDC input and DIN Rail mount installation.
$56.10
Ships on backorder
25130
25130
Industrial DIN Rail Mounted Power Supply with 48VDC output and a 39.8 Watts power rating.
$92.40
Ships on backorder
Compatibility taken from the Lantronix part-number tables for the SDSTX3110-124-LRT-B. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the SDSTX3110-124-LRT-B is used
- Networking PLCs and meters in industrial control cabinets
- Camera-based parking guidance and transportation systems
- Serial tunneling between remote sites over Ethernet
- Legacy Windows COM port applications reaching field devices
SDSTX3110-124-LRT-B datasheets & documentation
SDSTX3110-124-LRT-B FAQ
Does the SDSTX3110-124-LRT-B support RS-485?
Yes. Each of the four DB9 ports supports RS-232, RS-422 and RS-485 in 2-wire or 4-wire mode. RS-485 2-wire uses Data+, Data- and GND; 4-wire uses Tx+, Tx-, Rx+, Rx- and GND.
What operating modes does the SDSTX3110-124-LRT-B serial server offer?
It supports Virtual COM, serial tunnel, TCP server, TCP client and UDP modes. Virtual COM works with the included COM port redirector software on Windows NT through Windows 8, including 32- and 64-bit versions.
What power input does the SDSTX3110-124-LRT-B need?
It accepts 12 to 48 VDC on redundant inputs and consumes 4.32 W. Lantronix lists the 25135 24 VDC, 10 W and the 25130 48 VDC, 39.8 W DIN-rail power supplies as compatible accessories.
What temperature range is the SDSTX3110-124-LRT-B rated for?
It is certified to operate from -40°C to +70°C and stores from -40°C to +85°C at 5% to 90% non-condensing humidity, in an IP30 enclosure measuring 66 x 81 x 95 mm.
