ATOP SE5901 Rugged Serial to Ethernet Device Server
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The ATOP SE5901 is a rugged single-port serial device server with one RS-232/422/485 port and two 10/100BASE-T(X) RJ45 ports that support RSTP redundancy. It runs on 9-48 VDC with redundant power inputs, supports IPsec, OpenVPN and PPTP VPN, and operates from -40°C to +85°C in a 32 × 122 × 92 mm DIN-rail housing.
Ethernet Ports and Redundancy2 × 10/100BASE-T(X) RJ45 with RSTP, -40°C to +85°C
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- Ships from the UK
- UK & EU delivery, quoted with your price
- Pay by card or invoice
- Manufacturer's warranty
Questions about this product? Call our UK team: 023 9223 3611
Description
The Industrial Serial Device Server SE5901 is a cost effective gateway for Ethernet (TCP/IP) and serial signal communications; allowing almost any serial device to be connected to a new or existing Ethernet network. By encapsulating serial data and transporting it over Ethernet, SE5901 offers full duplex and bi-directional data seamlessly between the serial port and the Ethernet network.
SE5901 specifications
| RJ45 Ports | 2 × 10/100BASE-T(X) |
|---|---|
| Redundancy Protocols | RSTP (2 redundant ports) |
| Serial Ports | 1 |
| Serial Interface | RS-232 / RS-422 / RS-485, full function |
| Serial Connector | DB9 (SE5901-DB) or TB5 terminal block (SE5901-TB) |
| Serial Isolation | None listed for this model |
| Serial Server Modes | TCP Server (4/VCOM), TCP Client (2/VCOM), UDP (4 ranges) |
| Protocols | VirtualCOM, Reverse Telnet, full-duplex TCP/IP serial encapsulation |
| VPN | IPsec, OpenVPN, PPTP |
| Input Voltage | 9-48 VDC |
| PoE Input | IEEE 802.3af powered device, by request |
| Power Redundancy | Yes |
| EMC Protection | Industrial |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +85°C |
| Ingress Protection | IP30 |
| Mounting | DIN-rail |
| Dimensions | 32 × 122 × 92 mm (L × H × D) |
| Certifications | CE/FCC; EN 60950-1 and/or EN 62368 |
Specifications taken from the manufacturer datasheet.
Which version do I need?
This page covers the SE5901 series. ATOP's brochure lists SE5901-DB (DB9 serial connector) and SE5901-TB (TB5 terminal block); otherwise they are identical, with one serial port and two RJ45 ports. The same hardware class is sold as the SE5901-SDK, a programmable Linux edge computer, and ATOP's Modbus gateway on this platform is the MB5901. For cellular backhaul see the SE5901B.
Typical applications for the SE5901
- Connecting serial PLCs, meters and controllers to plant Ethernet
- Dual-homed serial links using the two RJ45 ports with RSTP
- Remote maintenance of serial equipment through an IPsec or OpenVPN tunnel
- Unheated field cabinets needing a -40°C to +85°C rating
- SCADA or HMI software on Windows reaching field devices through VirtualCOM
- DIN-rail control panels with redundant 9-48 VDC supplies
Complete the stack
Products that work with this one — connect it, power it, and get it online.
SE5901 — frequently asked questions
What is the difference between the SE5901 and the SE5901-SDK?
The SE5901 runs ATOP's standard serial server firmware, with TCP server, TCP client, UDP, VirtualCOM, Reverse Telnet, RSTP and VPN ready to configure. The SE5901-SDK is the programmable edge computer version: an 800 MHz ARM platform with up to 256 MB RAM and ATOP's Linux SDK for your own applications, plus two USB ports.
Does it support network redundancy?
Yes. Both 10/100 RJ45 ports are RSTP redundant ports, and ATOP lists RSTP redundancy among the SE5901's firmware features.
Which VPN types are supported?
IPsec, OpenVPN and PPTP, listed by ATOP as newer firmware features of the SE5901.
What power does it need?
9-48 VDC with redundant power inputs. An IEEE 802.3af PoE powered-device input is available by request.
Is the SE5901 a Modbus gateway?
ATOP lists it as a serial device server (TCP server/client, UDP, VirtualCOM, Reverse Telnet) with no Modbus conversion function. For Modbus TCP to RTU/ASCII conversion on the same class of hardware ATOP offers the MB5901.
How does it differ from the SE5201?
The SE5901 adds a second RJ45 port with RSTP, a 9-48 VDC input, VPN and a -40°C to +85°C rating in a DIN-rail housing. The SE5201 is a field-mount unit with one RJ45 port rated -40°C to +70°C.
How much does the ATOP SE5901 Rugged Serial to Ethernet Device Server cost in the UK?
The ATOP SE5901 Rugged Serial to Ethernet Device Server is supplied to order and priced on application. Send a quote request and we confirm the price and lead time in writing, usually the same working day. No account is needed. Indiott is a UK distributor invoicing with VAT (PSI Technologies Ltd, VAT GB 730 2340 83).
What is the lead time and delivery cost for the ATOP SE5901 Rugged Serial to Ethernet Device Server?
The ATOP SE5901 Rugged Serial to Ethernet Device Server is supplied to order. We confirm the lead time in writing with your quote, before you commit to anything. UK delivery is a flat £14.25 per order ex VAT, whatever the weight or how many items you order. We ship to GB and the EU and provide a VAT invoice with every order.








