Compact Industrial Field-Mount Serial Device Server

  • 1 x software-selectable RS-232/485/422 port
  • 1 x 10/100Mbps RJ45 Fast Ethernet port
  • Supports TCP server/client, UDP, Virtual COM and Tunneling modes
  • Configuration via Web Server page, Telnet Console, and Windows Utility
  • Upgradable firmware via Ethernet from a remote-PC
  • Rugged metal casing; Industrial EMC protection
  • Redundant dual DC power inputs for non-stop operation
  • Optional DIN-Rail mounting

Despite Ethernet having become the new backbone standard of Industrial Automation, Serial devices still remain highly relevant today, with numerous devices installed on sites worldwide. So with ATOP’s SE5201 Series, you can transform any serial device into an Ethernet-capable one, allowing you to control and monitor your legacy serial devices via your LAN or WAN – or even over the internet.

With such connectivity, the amount of time required to configure or troubleshoot a serial device located on a factory floor or in a remote location is eliminated. And with such Ethernet-based connectivity, serial devices can be integrated into modern practices such as Industry 4.0 and IIoT, allowing you to extend their lifetime and avoid wholesale device upgrades in the near future.

Featuring 1 x software-selectable Serial Port and 1 x RJ45 Port, the SE5201 Series is a simple-to-install device, with easy configurations options such as Telnet, Web browser, or other Windows utilities. And using the VirtualCOM software, Windows-based applications can access serial devices by mapping the virtual com ports to the SE5201 serial server series.

Encased in a rugged metal housing offering high EMC protection, the SE5201 Series is ideal for industrial and manufacturing automation applications, such as PLCs, HMIs, Barcode Scanners, Data Terminals, Electronic Kanbans, Shop Floor Control Systems, and Pick-to-Light Systems.

Environmental Limits
Operating Temperature-40°C ~ 70°C (-40°F ~ 158°F)
Storage Temperature-40°C~85°C (-40°F~185°F)
Ambient Relative Humidity5%~95%, (Non-condensing)
Physical CharacteristicsValue
Dimension (W x H x D)65mm x 78mm x 28mm (without wall-mount part)
SE5201-TB: 88.5 x 78.3 x 27.8mm (with wall-mount part)
SE5201-DB: 88.5 x 84 x 27.8mm (with wall-mount part and DB9 connector)
InstallationWall mount, DIN-Rail (optional)
Reset ButtonYes
Connector3-Pin 5.08mm Lockable Terminal Block and DC Jack for redundancy
Input Voltage

3-Pin 5.08mm Lockable Terminal Block: 9-30VDC; DC Jack 5VDC

Power Consumption<1.5W @9VDC
Power RedundancyYes
Reverse Polarity ProtectionYes
ProtocolsTCP, IPv4, UDP, DHCP Client, HTTP, HTTPS, Telnet, ARP, SNMPv1,v2c,v3
ConfigurationAtop Management Utility, Web UI, Telnet, CLI
VirtualCOMWindows/Linux redirection software
Link Modes - TCP ClientSingle destination or VirtualCOM
Link Modes - TCP Server4 Connections; VirtualCOM or reverse Telnet
Link Modes - UDPUp to 4 Ranges IP
Serial Interface
Connector9-Pin D-Sub9 connector(Male, -DB version) or 5-Pin Terminal block (-TB version)
ModeRS-232/RS-485(2 and 4 wire)/RS-422, software selectable
Baud Rate1200~230,400 bps
ParityNone, Odd, Even, Space, Mark
Data Bits7, 8
Stop Bits1, 2
Flow ControlNone, Xon/Xoff, RTS/CTS (RS-232 only)
Network Interface
SpeedIEEE 802.3 10BaseT
IEEE 802.3u 100BaseT(X)
Auto MDI/MDI-XPresent
Connector portsRJ45 x 1
ShockMIL-STD-810F Method 516.5
DropMIL-STD-810F Method 516.5
VibrationMIL-STD-810F Method 514.5 C-1 & C-2
Warranty5 Years
MTBF25.29 years according to MIL-HDBK-217F, 25 degrees C
ProtectionIEC/EN60529 - IP30
StandardItemTest pointValueLevel
IEC 61000-4-2Electrostatic DischargeContact Discharge±4kV2
IEC 61000-4-2Electrostatic DischargeAir Discharge±8kV3
IEC 61000-4-3Radiated Susceptibility80-1000MHz10(V/m)3
IEC 61000-4-4EFTAC Power Port±2.0kV3
IEC 61000-4-4EFTDC Power Port±1.0kV3
IEC 61000-4-4EFTSignal Port±1.0kV3
IEC 61000-4-5SurgeAC Power PortLine-to Line±1.0kV3
IEC 61000-4-5SurgeAC Power PortLine-to Earth±2.0kV3
IEC 61000-4-5SurgeDC Power PortLine-to Line±0.5KV2
IEC 61000-4-5SurgeDC Power PortLine-to Earth±1KV2
IEC 61000-4-5SurgeSignal PortLine-to Earth±1.0KV2
IEC 61000-4-6Conducted Susceptibility0.15-80MHz10 Vrms3
IEC 61000-4-8PFMFEnclosure30A/m4
IEC 61000-4-11DIPAC Power Port1. >95%,Reduction,0.5period
2. 30%, Reduction,25 period
3. >95%,Reduction,250 period
SafetyEN 60950-1 / EN62368-1
EMCFCC Part 15, Subpart B, Class A, EN 55032, EN61000-6-4, EN 61000-3-2, EN 61000-3-3, EN 55024, EN61000-6-2
RoHS 2Yes


UN315-1212 (US-Y)50500151120003GY-Type power adapter, 100~240VAC input, 1.25A @ 12VDC output, US plug, LV6
UNE315-1212 (EU-Y)50500151120013GY-Type power adapter, 100~240VAC input, 1.25A @ 12VDC output, EU plug, LV6
UV305-0510(US-DC)50500051500003GDC jack (3.5/1.35/7.5 mm) power adapter, 100~240VAC input, 1.0A @ 5 VDC output, US plug, LV6
UVE305-0510 (EU-DC)50500051500013GDC jack (3.5/1.35/7.5 mm) power adapter, 100~240VAC input, 1.0A @ 5 VDC output, EU plug, LV6
UVE305-0510(UK-DC)50500051500023GDC jack (3.5/1.35/7.5 mm) power adapter, 100~240VAC input,
1.0A @ 5 VDC output, UK plug, LV6
ADP-DB9(F)-TB559906231GFemale DB9 to Female 3.81mm TB5 Converter
ADP-DB9(M)-DB9(F)59901411GSE_MB52XX DB9 Pin assignment to SE_MB50XX DB9 Pin assignment
DK-2530200000000022GPlastic DIN Rail Kit
SE5201-DB1P1SE520100001GIndustrial Serial Device Server, 10/100BASE-T(X), RS232/422/485 DB9
SE5201-TB1P1SE520100002GIndustrial Serial Device Server, 10/100BASE-T(X), RS232/422/485 TB5


Version Name Time Size Download
v1.0 Linux_Driver_x64 2021-03-29 210.16 KB
v5.60 Management Utility for Windows 2021-01-18 23.65 MB
v5.50 Management Utility for Windows 2020-10-21 23.65 MB
v5.20 Management Utility for Windows 2016-10-28 16.21 MB


Version Name Time Size Download
v1.17 SE52XX Firmware 2021-07-02 9.97 MB
v1.14 SE52XX Firmware 2020-11-17 9.98 MB
v1.13 SE52XX Firmware 2020-08-25 9.98 MB
v1.10 SE52XX Firmware 2020-05-06 9.71 MB
v1.08 SE52XX Firmware 2019-08-23 0 B
v1.03 SE52XX Firmware 2018-10-30 0 B


Version Name Time Size Download
v1.1 Datasheet EN 2023-11-01 179.26 KB
v0.6 Datasheet EN 2019-01-14 213.79 KB
v1.0 Datasheet EN 2020-09-26 220.93 KB
v0.9 Datasheet EN 2020-09-25 221.09 KB
v0.8 Datasheet EN 2020-06-15 220.95 KB
v0.7 Datasheet EN 2019-11-13 223.26 KB
v0.4 Datasheet EN 2018-09-11 211.78 KB
v0.5 Datasheet EN 2018-10-30 213.93 KB


Version Name Time Size Download
v1.4 SE52XX User Manual 2021-03-19 1.96 MB
v1.2 SE52XX User Manual 2019-08-22 2.65 MB
v1.1 SE52XX User Manual 2019-06-03 2.51 MB

Hardware Installation Guide

Version Name Time Size Download
v1.1 SE5201-SE5201C Series Hardware Installation Guide 2019-01-14 7.16 MB

STP/DXF drawings

Version Name Time Size Download
SE5201 STP 2024-01-10 2.33 MB

Test reports

Version Name Time Size Download
SE5201 Declarations of Conformity 2023-03-10 302.05 KB
v1.0 SE5201_MB5201_CE_FCC 2020-09-23 830.22 KB
v1.0 SE5201_MB5201_LVD 2020-09-23 4.5 MB

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