Modbus RTU - DMX512 Converter (gateway)


The module works as a gateway allowing sending converted data from Modbus RTU (works as Modbus slave) to DMX512 network (for example from PLC).

In the module, sending data to DMX network is being done by writing needed DMX channels values to the special Modbus register of the module with standard Modbus RTU command. 

Download software page 

Protocol description

Video review

  • Size: standard DIN rail 35 mm wide enclosure (89x65x35 mm).
  • Commands: standard Modbus RTU commands “write holding register” (write DMX buffer), change Modbus baud rate, set Modbus module address.
  • Indication: “power on” LED, DMX Tx LED.
  • Power supply and consumption: 12V 50mA.
  • DMX line: full galvanic isolation data lines and ground.
  • Memory: non-volatile memory chip for Modbus settings.
  • Connection: screw connectors.
  • Modbus address: (can be changed by Modbus command) 0...255 (default address: 0x01).
  • Baud rate: (can be changed by Modbus command) 2400, 4800, 9600, 19200, 28800, 38400, 56000, 57600, 115200, 128000, 256000 (default is 9600).
  • Serial settings: 8n1


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