RTU (full spelling: Remote Terminal Unit), DTU (full spelling: Data Terminal Unit) and industrial gateways are common devices in the field of industrial automation. They play an important role in industrial data collection, transmission and communication. Although they all have similar functions, there are some differences in design, application, and working principles.
1. RTU : RTU is a device used for real-time data collection and control. It is usually installed on-site to monitor and control sensors and actuators. RTU is mainly responsible for collecting data from field devices and transmitting these data to the central control room or monitoring system. It can process the collected data and perform control operations, such as adjusting device parameters or sending alarm messages.
2. DTU : DTU is a device used for data transmission and communication. It is typically used to transmit collected data to a remote server or cloud over a wireless or wired network. DTU can convert data into standard communication protocols such as Modbus, DNP3, etc., and transmit it using networks such as GPRS, 3G, 4G or Ethernet. DTU focuses more on data communication rather than data acquisition and processing.
3. Pasarela industrial : An industrial gateway is a bridge that connects devices with different communication protocols. It converts data from different devices and transmits it to the target device or system through the network. Industrial gateways usually support multiple communication protocols, such as Modbus, Ethernet/IP, Profibus, etc. It can connect devices of different types and protocols together to achieve seamless integration and transmission of data.
In general, RTU is mainly responsible for data collection and control, DTU is mainly responsible for data communication, and industrial gateways are responsible for connecting different devices and communication protocols together. They are often used in combination in industrial automation systems to achieve data collection, transmission and control.Recommended content: The connections and differences between DTU, RTU and edge computing gateways