Abstract—According to the IEC 60870-5-101 and IEC 60870-5-104 telecontrol protocol published by IEC, the corresponding companion standards, namely DL/T 634.5101-2002 and DL/T 634.5104-2002 have already been drafted in China. Application of IEC 60870-5-104 protocol in DTU is discussed detailedly in this paper, based on introducing the basic principles of the IEC 60870-5-104 protocol and DTU. The paper specifically describes Ethernet communication implementation based on hardware protocol stack Ethernet chip W5100 and DSP, which include hardware circuit design and software realization. Finally the paper introduce the software design of IEC 60870-5-104 protocol.

Index Terms—IEC 60870-5-104 protocol, DTU, Ethernet communication, W5100, DSP

Cite: Weiqing Tao, Xiong Chen and Qiaoyun Zhang, "Realization of IEC 60870-5-104 Protocol in DTU," International Journal of Computer and Electrical Engineering vol. 2, no. 5, pp. 815-820, 2010.