4/19/2016 8:57 AM | |||||
Posts: 42 Rating: (8) |
Thanks For the reply.. So i understand that i can not use the in built profinet port of the cpu for R-system. So i have to use cp card. Anyone have a sample program of R-system on ethernet for s7-300 or s7-400 cpu? Please provide me.. It will help me.. |
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4/20/2016 5:31 AM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
The program is basically the same as for Redundancy using Profibus CPs. |
There is no such thing as the last bug in a program |
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4/20/2016 5:43 AM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684)
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Hello HVK; This is not as good as a sample program, but the information collected in these FAQs may help you advance your project:
FAQ collection for SIEMENS PLC soft redundancy
https://support.industry.siemens.com/cs/ww/en/view/87604432 Hope this helps, Daniel Chartier |
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4/20/2016 6:26 AM | |
Posts: 42 Rating: (8) |
Thanks for reply.. I am on Initial stage of Developement . I hope these document help me to create redundancy.. Thanks again for Support.. |
4/20/2016 6:51 AM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
Hello Hope this helps Cheers AttachmentSWR_Download_Procedure.pdf (259 Downloads) |
There is no such thing as the last bug in a program |
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4/29/2016 10:25 AM | |
Posts: 42 Rating: (8) |
Thanks Navang FOr replying. I hope the Procedure you attacch is helping me a lot.. Thank u everybody who is replying me on this topic. |
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4/30/2016 1:10 PM | |
Joined: 12/7/2009 Last visit: 9/12/2024 Posts: 33 Rating: (9) |
I Don't see any specific useful application running from this R system as such... R system works fine when we deliberately create an error in some modules to check R functionality while commissioning. But in all R system installations what people have done till now i have received calls only like "When a module fails the Redundancy feature is not working". Whom to blame! I prefer going to H system if a hotstandby is seriously required... R is just a software solution & imagine going back to manufacturer when it doesn't work is an NVA. This not what it is meant for. Else the CPUs from Siemens are roubust enough & they don't generally fail.. You can create R system by keeping only one CPU & duplicating the I/Os or other structure down the line. Still the basic CPUs from Siemens are good enough to handle your software redundancy solutions. Try creating R system programs by yourselves & u will understand what best u can get compared to H. Forget R system libraries. They are very basic.. |
Last edited by: Bharath Sharma at: 4/30/2016 1:11:54 PM |
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4/30/2016 2:07 PM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
I have overseen the commissioning of More than 50 S7-300 R Systems ( Some of these in fairly critical applications ) and never had this observations from the customer. The oldest of the systems has been in operation for > 15 years now. I believe that if the Redundancy is not working properly, You need to blame the person who commissioned the system. Almost certainly he has not configured the system properly. Also blame the person who conducted the Factory / Site acceptance tests as any faulty implementation can easily be detected at this stage. Yes, R Systems have their limitations ( They do not support Y-Link for example ) , yet they are an excellent ( and Much lower cost, especially for 300R ) solution for application where changeover time is not critical. The implementation requires a bit more than just copying the sample program to your project. You need to read the Manual thoroughly and implement your project accordingly. You cannot blame the Car if the Driver does not know how to drive. Hope this helps Cheers Navnag
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There is no such thing as the last bug in a program |
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This contribution was helpful to3 thankful Users |
5/1/2016 8:21 PM | |
Joined: 12/20/2008 Last visit: 8/12/2024 Posts: 556 Rating: (236) |
R systems are mainly a concept of conventional control system. These days more and more clients and customers inclined for H systems and hardware redundancy. Although the initial cost of an R system is less due to Cheap hardware. Although if not implemented successfully or correctly it becomes more expensive to maintain and troubleshoot in long term. |
5/2/2016 5:13 AM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating: (308) |
I am no fan of R-Systems or for that matter even H-systems. In my experience PLC failures occur due to : |
Last edited by: Navnag at: 5/2/2016 5:19:25 AMThere is no such thing as the last bug in a program |
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5/2/2016 8:02 AM | |||||
Joined: 3/6/2012 Last visit: 11/1/2021 Posts: 23 Rating: (6) |
Dear HVK, Find Attachment of S7 400 H sample Program.... AttachmentS7400HSampleProg.zip (183 Downloads) |
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