July 22, 2022

ICP Australia is proud to introduce ICP DAS’s DNP-211, which is a DNP3 Master to Modbus TCP Server Gateway. Whereby, Distributed Network Protocol 3 (DNP3) is a set of communications protocols used between components in process automation systems. Its main use is in utilities such as electric and water companies.

DNP-211 was developed for communication between various types of data acquisition and control equipment. It plays a crucial role in SCADA systems. It is primarily used for communications between a master station and Remote Terminal Units (RTUs) or Intelligent Electronic Devices (IEDs).

DNP-211 is a solution that provides a communication transformation between DNP3 and Modbus TCP protocol. It can connect an existed DNP3 network with an Ethernet-based master device as long as this master device supports the Modbus TCP protocol. For the DNP3 network, the DNP-211 is a DNP3 master device. It supports several common data groups and variations communicated with slave devices. From the view of the Modbus TCP network, DNP-211 plays a Modbus TCP server role. It can receive the commands from the Modbus TCP client and process the commands to reply or send the related DNP3 data. All the DNP3 I/O data and Modbus address mapping can be configured via the DNP-211 utility.


  • Read/Write DNP3 Outstation via Modbus TCP
  • Support TCP, UDP and Serial for the DNP3 side
  • Support Data Group 1, 10, 12, 20, 30, 40, 41
  • Support 8192 Bits for Digital I/O and 2048 Channels for Counter and Analog I/O
  • Support Modbus Function Code 1, 2, 3, 4, 15, 16
  • Provide DNP3 Outstation Connection Status on Modbus Address
  • Maximum Support 32 DNP3 Outstations
  • Maximum Support 16 Modbus Client Connection

See More: DNP-211


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