MB5901 Series

MB5901 Series

ATOP MB5901 Series – Modbus-Cellular Gateway w/ 1 x RS-232/485 Serial



Diverse Hardware Infrastructure
ATOP MB5901 Series Modbus Gateway supports the four most commonly used communication standards, RS-232/485/422, and Ethernet. The ease-ofuse configuration utility provided with Modbus Gateway can quickly select the hardware interface , and easily switch to the existing communication infrastructure. Industrial EMC protection and wide temperature operation capability make MB5901 ready for every mission. And if cabling is an issue, the PoE-powered version can allow MB5901 to be powered through PoE.

Embedded Security
Relax. MB5901 Modbus Gateway supports IPsec VPN encryption, allowing you to safely use the device over the internet without worrying about malicious attacks, data sniffing or unintentional remote control of your Modbus slaves. The embedded VPN deamon supports peer-to-peer and peer-to-side connections.

Switching between Modbus Protocols
Modbus Gateway supports the standard Modbus protocol and is capable of converting any Modbus protocols between Modbus TCP, Modbus RTU, and
Modbus ASCII for all supported hardware interfaces.

Modbus ID Routing
Modbus Gateway supports various types of hardware communication interfaces, Modbus protocol conversion, and Modbus ID routing. Therefore the Modbus Gateway can integrate your existing and complex Modbus hardware configuration into a simple network that can be easily managed.


  • Industrial EMC protection, wide temperature operation, -40°C~85°C
  • 2-port 10/100Mbps Fast Ethernet, 1-port USB 2.0 high speed OTG
  • Bi-Directional Modbus TCP/RTU/ASCII conversion from Serial to Ethernet and Vice-versa
  • Advanced features include embedded IPsec VPN security, Virtual ID remapping, VirtualCOM mode, exception handling and many others
  • Rugged metal case with wall or DIN-Rail mount
  • Configuration via Web Browser / Serial-Telnet Console / Windows Utility
  • Remote firmware upgrade
  • Optional 802.3af PoE models can be powered through the Ethernet cable

Ordering Information

Part NameArticle NumberDescription
PG5901-DB 1P1MB5901DB001G 1-port RS-232/422/485 Industrial Modbus Gateway, DB9
MB5901-TB 1P1MB5901TB001G 1-port RS-232/422/485 Industrial Modbus Gateway, TB5
MB5901-PoE-DB 1P1MB5901POE01G 1-port RS-232/422/485 Ind. Modbus Gateway, DB9, PoE Powered (802.3af)
MB5901-PoE-TB 1P1MB5901POE02G 1-port RS-232/422/485 Ind. Modbus Gateway, TB5, PoE Powered (802.3af)