UNIGATE® MB Protocol Converter for devices with serial Modbus RTU interface

  • Easy installation
  • Norm compliant
  • Certified
  • Configurable
  • Ready-to-use
  • Designed and manufactured in Germany

For all devices with a serial Modbus RTU interface

The Deutschmann Protocol Converter UNIGATE MB connects your device to the desired fieldbus or Industrial Ethernet standard via a serial interface. RS232, RS485 and RS422 interfaces are on board as a standard feature of the UNIGATE.

The communication between the chosen bus system and the serial side can be carried out via Modbus RTU, Modbus ASCII as well as other common bus systems such as 3964(R).

A special feature of the UNIGATE MB series is Brand labeling. With the customized design Deutschmann Automation not only gives you the opportunity to pre-configure the device and choose different housing colors, you can also apply your own logo.

Typical serial applications that can be used with the UNIGATE include, among others, variable frequency drives, sensors, actuators, human machine interfaces, barcode readers, RFID readers and industrial scales.



UNIGATE® MB - overview

  • Available for most fieldbus and Industrial Ethernet versions
  • RS232, RS485- and RS422 interfaces on Board
  • When using the RS485 interface, multiple terminal devices can be used on a Protocol Converter
  • Same design on the serial side in all bus versions
  • The fieldbus or Ethernet side meets the standard, respectively the standard market modules.
  • Modern, slim DINrail
  • Same dimension in all bus versions
  • Wide voltage rane from 10 to 33 VDC
  • Built-in isolation on the bus side
  • Configuration of the module via configuration tool WINGATE
  • Modbus RTU (master/slave)
  • Modbus ASCII (master/slave)
  • Up to 24 Modbus requests configurable
  • 3964(R) protocol
  • Transparent protocol 
  • SSI protocol for transducer (gray code or binary code)
  • Once a configuration is completed it can be re-used for other installations.
  • Complete PROFIBUS DP Slave interface
  • Automatical Baud rate recognition (9600 bit/s-12 Mbit/s)
  • DPV0 and DPV1 supported
  • Isolated PROFIBUS interface with 9-pin. D-sub connector
  • PROFIBUS address adjustable via rotary switch
  • Up to 244 Bytes input- and 244 Bytes output data (total data length 488 Bytes)
  • RS232/RS485/RS422 up to 625 kBaud configurable

Technical data

(WxDxH in mm)

23 x 117 x 111 (screw-plug-connector included)
23 x 117 x 100 (screw-plug-connector not included)


approx. 123 g

Protection class


Housing material


Mounting DINrail (EN 50022)
External power supply 10 to 33 Volt DC
Reverse polarity protection, short circuit protection and overload integrated
Current consumption (at +24V/DC) typ. 70mA, max. 80mA
Operating temperature -40°C (non condensing) up to +85°C
Storage/transport temperature -40°C ... +85°C
Fieldbus functions All mandatory PROFIBUS DP Slave functions
Technology ASIC
Certifications PROFIBUS, CE 

Order data

Order designation Description Order number
UNIGATE MB-PROFIBUS DIN-rail module for every device with serial Modbus RTU - to PROFIBUS. Serial interface - RS232, 422 and 485 on-board. Housing: sky blue RAL 5015. V3978