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What is DTU and how does it function?

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DTU stands for Database Transaction Unit, also called serial device server, industrial IoT terminal unit, which can be used as a Modbus gateway in some industrial application. The main function of DTU is transmit data between different protocol, among the Modbus to TCP is most used.

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DTU can connect to the industrial SCADA system directly. When the device is working in the mode of transparent transmission, the SCADA system can communicate by having an individual IP address. When DTU is used as a Modbus gateway, DTU needs to have a static IP address. In this scenario, data interaction with the SCADA system can be fulfilled by the Modbus protocol. DTU supports protocol conversion to meet the communication requirements between a variety of protocols. So far, DTU has supported the conversion between Modbus TCP and Modbus RTU, enabling field devices to connect to the SCADA system.

For now, ChilinkIoT 4g DTU IR1000 is a robust device and has been sold a lot around the world, with 4G cellular network and WI-FI function, IR1000 can get access to the internet conveniently at any time. With 1x RS232 and 1x RS485, you can connect to the field serial device. Then you can choose to forward data from field device to your server freely, also you can deploy IR1000 in your SCADA system as Modbus network bridge, cause it support Modbus RTU, Modbus TCP, TCP, UDP, MQTT protocol.

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Besides the functions above, IR1000 also features below

  1. Industrial-grade design, support power DC range 6-36V
  2. Built-in hardware watchdog, ensuring the device can be in good working status.
  3. Support VPN client, strengthening the data security
  4. Built-in Network monitor and Network diagnosis
  5. Support cloud platform remote management.