No.4（2009）8.Implementation of High Speed Real-time Communication at Field Bus

Yasuaki Kaneda, Yasuharu Irizuki, Hiroshi Yokota  

  Recently, in control systems such as factory automation, automobiles, and robots, etc, controllers are networked by using field buses. This is to give systems high functionality and capability. There are many benefits to using a field bus; controllers can communicate mutually, system functions can be expanded, high dependability communication can be realized, and also cable harness can be reduced. In this research, to ensure real-time communication at a field bus, we have adopted a time triggered (TT) method to a field bus and constructed a communication model using the TT method. In addition, we have modified the TT method such that a transmission window is efficiently and dynamically assigned to the band used by the field bus. As a result, it has real-time capability, while also realizing high speed communication.

Keywords

Field bus, CAN bus, Real-time, High speed communication

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