10/17/2011 12:15 PM | |
Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181) |
Hello, Might be useful for future: Which organization blocks do you need for error handling? In case of possibility temporary to switch off (according to production, maintenance) some of existing slaves, you can use (like an option there) What should you pay attention to when operating a DP slave temporarily on a PROFIBUS DP network? and Disabling DP slaves after startup of the CPU Best regards, Hristo Mihalev |
Last edited by: UMENCHO at: 10/17/2011 12:15 PM |
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10/17/2011 12:32 PM | |
Posts: 38 Rating: (1) |
Thanks but OB 82,85,86,121,122 etc are already loaded but CPU still goes in to stop mode.Please advice. |
Last edited by: abrarfsd at: 10/17/2011 12:33 PM |
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10/17/2011 12:34 PM | |
Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181) |
As suggested above - check in diagnostic buffer the reason for that. Best regards, Hristo MIhalev |
10/18/2011 3:14 PM | |
Posts: 38 Rating: (1) |
Please see the attached file of hardware topology. The baud rate is 1.5 Mbs and the total distance is less than 100 meters. Regards AttachmentHW config.zip (213 Downloads) |
10/18/2011 4:18 PM | |
Posts: 38 Rating: (1) |
Yes the encoders are attached with the shaft of the motors with the help of sprockets/chains and the profibus cable attached with the dp's is (28432m Siemens Simatic net profibus FC 6xV1 830-OEH10 22AWG shielded).Mostly the error occurs on these encoders whenever they are operational (whenever there is mechanical movement i-e, width adjustment with the help of motors feeded by MP370 touch). We have replaced old profibus cables of these encoders interconnecting them but no improvement.Please see the attached file. Regards AttachmentPLC.zip (123 Downloads) |
10/18/2011 4:54 PM | |
Joined: 9/27/2006 Last visit: 9/25/2024 Posts: 12283 Rating: (2685) |
Hello abra; Thereis more variety in Profibus cables offered by Siemens than simply the standard Profibus cable, and your selection should adapt to the specific needs of your project. Could it be that movement of your mahines stresses the Profibus cables and connectors in your plant? It might seem wise thento look into the different "flexible" or"trailing"cables described in the following link, from the Siemens Industry Mall:à https://eb.automation.siemens.com/goos/catalog/Pages/ProductData.aspx?nodeID=9300036&catalogRegion=WW&language=en&activetab=product®ionUrl=/#topAnch Hope this helps, Daniel Chartier |
10/19/2011 6:53 AM | |
Posts: 38 Rating: (1) |
The fault appears in the encoders only. Please see the attached diagnose buffer I have already recorded.Every time same type of buffer but different station number. Please advice. Regards AttachmentDiagnose.zip (170 Downloads) |
10/19/2011 2:43 PM | |
Posts: 38 Rating: (1) |
OB34 priority class 11 and execution time 100 and OB35 priority class 12 and execution time 40. I have increased execution time of Ob35 from 40 to 50 but no improvement.Please see the attachment for OB's and advice as all the software is in German
Attachment!_111.zip (148 Downloads) |
10/19/2011 6:12 PM | |
Posts: 38 Rating: (1) |
So should I increase scan time of OB34 and 35 but how much and how can I do phase offset between them? |
Last edited by: abrarfsd at: 10/19/2011 6:15 PM |
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10/19/2011 6:50 PM | |
Posts: 38 Rating: (1) |
Please see the attached picture and suggest the values to increase? |
10/3/2012 7:30 PM | |
Posts: 38 Rating: (1) |
In online checking there is no module seems faulty. Also all the FRABA Encoders look ok without any fault. |
10/4/2012 7:55 AM | |
Joined: 11/8/2011 Last visit: 9/24/2024 Posts: 387 Rating: (43) |
Hi abrarfsd, have you checked by decreaing the baudrate. |
10/15/2012 8:38 AM | |
Posts: 38 Rating: (1) |
Please see the latest diagnostic buffer and advice.
AttachmentDiagnose.zip (180 Downloads) |
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