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sinamics S120 PROFINET unstable after power OFF ON

9/11/2014 9:21 AM	Rate (0)
Manoval Posts: 9 Rating: (0)	I have a project with cca 50 sinamics S120 V4.6 (4602127) connected in profinet. After switchs OFF / ON sinamics CU, profinet communication for several sinamics falls down with F01910. I am not sure how is behaving the rest of the network if one CU goes OFF. The rest should work normally, I hope. Thanks for useful tips.
Manoval Posts: 9 Rating: (0)
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9/11/2014 10:10 AM	Rate (0)
ChristophD Grandmaster-Expert Joined: 5/12/2006 Last visit: 1/19/2026 Posts: 22806 Rating: (3073)	Hello, a little bit more informations please: which PLC? RT or IRT? Send Clock? Topology? Regards Christoph

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9/11/2014 11:40 AM	Rate (0)
Manoval Posts: 9 Rating: (0)	I just worked on drives and I have no details about PLC parameters you asked. I know that is SIMATIC S7 400. I already left the site :( Anyway I would be happy if you confirm that inactive node (powered OFF) should not affect the rest of profinet.
Manoval Posts: 9 Rating: (0)
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9/11/2014 11:58 AM	Rate (0)
ChristophD Grandmaster-Expert Joined: 5/12/2006 Last visit: 1/19/2026 Posts: 22806 Rating: (3073)	Hello, if the note is in the middle of a PN Line all other devices after this note are not reachable! So is a thing of the pn topology ;) Regards Christoph

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9/12/2014 12:36 PM	Rate (0)
Manoval Posts: 9 Rating: (0)	So in that case should be better to use STAR topology to prevent the problems in case of "dead" nodes / drives.
Manoval Posts: 9 Rating: (0)
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9/12/2014 12:49 PM	Rate (0)
ChristophD Grandmaster-Expert Joined: 5/12/2006 Last visit: 1/19/2026 Posts: 22806 Rating: (3073)	Hello, yes , or a MRP(D) Ring Topology. Regards Christoph

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