S7-1200 video tutorial: functions and features of the S7-1200 - do with me - 2/112
http://www.elearning.siemens.com.cn/video/Course/201105/A1-12-exe_skin.swf
S7-1200 video tutorial: functions and features of the S7-1200 - do with me - 2/112
http://www.elearning.siemens.com.cn/video/Course/201105/A1-12-exe_skin.swf