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Profibus Loss on 313C-2 DP

Created by: Smog at: 5/9/2009 12:53 PM (3 Replies)

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5/9/2009 12:53 PM	Rate (0)
Smog Posts: 4 Rating: (0)	Hi to all, I need some help with an issue on a S7 313C-2 DP. I have uploaded plc program in to S7 software (i don't have original) i need to remove a redundant profibus node and switch the test mode off, online monitor shows four nodes ok and one has a red slash(the one which i wish to remove). they all show DP Norm but when i access them there is a load of question marks in fields except Family which shows General, I have a diagnostic address and the node showing it is on the DP master system, anyway the system works. If i remove the data transfer blocks for this node sfc14 and sfc15 from OB1 and then remove the node in hardware manager after it has compiled an downloaded i lose comms with all nodes and cannot restore communication, all addresses look the same as before. Prior to modification when show accessible nodes i have 2 on the mpi and 8 just below which i cannot access i have uploaded from mpi 2 We have a second mmc card with a backup on which we are now using.. Any ideas what to check for to get profibus back online ? Kevin Smith
Smog Posts: 4 Rating: (0)
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5/11/2009 9:59 AM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 1/15/2025 Posts: 8804 Rating: (1173)	Dear Smog, What version of Step 7 are you using? The profibus slaves, do you have the GSD files? Best regards, Wizard

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5/14/2009 10:10 AM	Rate (0)
Smog Posts: 4 Rating: (0)	Hi Wizard, The version of S7 is 5.4 sp4. i don't have the gsd files for the slaves, could this cause the problem ? Regards Kevin Smith
Smog Posts: 4 Rating: (0)
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5/14/2009 1:13 PM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 1/15/2025 Posts: 8804 Rating: (1173)	Dear Smog, That could be a reason. Try to download the GSD files from internet. Or ask the manufacturer of slave. Best regards, Wizard

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