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profibus communication, G120

1/23/2014 9:20 AM	Rate (0)
nowire Experienced Member Joined: 1/26/2012 Last visit: 4/6/2025 Posts: 102 Rating: (0)	Hello, I'm a beginner in the profibus communication. I have see all documentation/link in this post, but I want understand well the configuration for data communication. In my project I have one G120 drive. I configured the telegram 354 PKW 4/4 and PZD 6/6. If I have well understand PZD are cyclic and PKW are "ondemand". In step7 configuration I use SFC14 and SFC15 for reading and writing on DP. The cyclic or ondemand metod is automatic or I must separate the two reading/writing PKW/PZD area making two different call for SFC14 and SFC15? For example: always SFC14 for 6 words of PZD reading and only for some condition SFC14 for 4 words PKW. Sorry for my english. The last question: where I can found the UDT for the siemens telegram: UDT for 350 telegram, UDT for 354 telegram... Thanks
	Last edited by: GrasserF at: 1/23/2014 8:25 PM new subject after splitting from /tf/WW/en/Posts/93275
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1/23/2014 3:22 PM	Rate (1)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 8/29/2025 Posts: 6037 Rating: (828)	Hello, PZD and PKW have nothing to do with SFC14 and SFC15. The following description is a little bit older and includes an example for PKW communication. http://support.automation.siemens.com/WW/view/de/30566350
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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