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Industrial Ethernet

Modbus TCP

Modbus TCP is a communication protocol for industrial automation technology based on Ethernet. Modbus TCP corresponds to the direct implementation of the established Modbus protocol (RTU) to a TCP/IP based communication. Existing Modbus applications can thereby easily use a connection-based, secure exchange of process data via an existing Ethernet network.

Contrary to other protocols, Modbus can handle delayed messages which occur often e.g. for modem connections or wireless networks.

This way, Modbus enables reliable control, device monitoring and data recording, even from a distance.

AUMA actuators with AC .2 actuator controls support Modbus TCP, allowing easy and flexible integration into virtually any type of network.

Advantages

  • Data exchange according to the request/response principle based on TCP/IP connection
  • Suitable for simple real-time requirements (cycle times approx.100 ms)
  • Based on standard network components (switch, etc.) and IT practices
  • Very simple and universal protocol, basically a transparent implementation of Modbus RTU
  • Communication/routing without special gateway across network segments