详见《丹佛斯S7-300C与Danfoss FC300 PROFIBUS-DP通讯》连接：
http://www.chuandong.com/publish/tech/application/2008/3/tech_3_16_8459.html
《丹佛斯VLT 5000 Profibus and Siemens S7 PLC》下载：
http://www.plcs.net/downloads/index.php?action=downloadfile&filename=Profibus_communication.pdf&directory=Siemens
或
http://www.cheminfo.gov.cn/HezuoPage/gongkong.aspx?code=cheminfo&action=detail&type=Solution&infoId=1-8319-9EF6266630CB
《基于PROFlBUS—DP总线的Danfoss变频器应用》连接：
http://www1.shejis.com/uploadfile/zk/uploadfile/200810/20081024090708598.rar