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Data exchange Fail safe CPU (CPU 315F-2PN/DP) and one H-System (CPU 414-3H)

Created by: Import-User-1 at: 10/21/2010 10:13 PM (6 Replies)

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10/21/2010 10:13 PM	Rate (0)
Import-User-1 Posts: 3609 Rating: (29)	Import of a Technical Question of an User anup20 Dear All, I have one Fail safe CPU (CPU 315F-2PN/DP) and one H-System (CPU 414-3H). Now I have to send the data from fail safe cpu to H cpu. How Can I do this? My data is in F-DB of Fail safe CPU and FC for send /recvareF- Send and F-Rcv which is not able to communicate with H-CPU. I have to send a F-DB data to DB of H-CPU. SO is this possible?
Import-User-1 Posts: 3609 Rating: (29)
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10/22/2010 8:17 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, The communication can only be failsafe if both systems are failsafe. Failsafe S7 FH systems are described in this manual: (http://support.automation.siemens.com/WW/view/en/2201072) Chapter 1.2 lists the Hardware and software components of S7 F/FH Systems Chapter 7.2 explains the Safety-related communication between S7 F Systems and S7 Distributed Safety. I guess that it is what you look for.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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10/23/2010 11:52 PM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 11/17/2023 Posts: 2705 Rating: (318)	Hi, A perfect answer, that is the way it works, I have already made such a communication, so it must work
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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10/25/2010 8:51 AM	Rate (0)
anup20 Posts: 13 Rating: (0)	Hello, Thanks for reply. You mean, Data send/recieve not possible between Fail safe system (CPU135F) and H-System i.e. redudant (CPU 414-3H).This CPU400 is not fail safe.Only there is H-redudancy.
anup20 Posts: 13 Rating: (0)
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10/25/2010 9:19 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 11/11/2024 Posts: 3026 Rating: (1057)	anup20 You mean, Data send/recieve not possible between Fail safe system (CPU135F) and H-System i.e. redudant (CPU 414-3H).This CPU400 is not fail safe.Only there is H-redudancy. Hello anup20 you can still send data from the F-CPU to the H-system, but you will do so via "standard" communication (NOT via the safetyrelated communciation blocks) andprogram the communication in your "standard" program (NOT in thesafety program of your 315-F). Note that you can of course still send information from the safety program (the "standard" program has access to F-DB's and F-I/O's, see chapter 7 of the Distributed Safety manual for more)to the 400H system. This "safety" relevant data does however now "loose" any safety Catogery rating and is sent as "standard" data. I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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10/26/2010 8:05 AM	Rate (0)
anup20 Posts: 13 Rating: (0)	Dear fritz, Thanks. yes It help me to do the programme. Now I am doing a saftey programme in saftey FC and Send /Rcv programme is in standard programme FC. all IO's are used in both saftey FC as well as standard FC but I am sending F-DB to H system and if any passivation activates then it will work or not, I doubt?
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10/26/2010 8:48 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 11/11/2024 Posts: 3026 Rating: (1057)	anup20 ...but I am sending F-DB to H system and if any passivation activates then it will work or not, I doubt? Hello anup20 A send of a DB (be it a "standard" DB or F-DB)is a read access to the DB. Since you can read outALLdata from the safety program(e.g. F-I/O's, F-DB's, F-IDB's) in your "standard"program, you needn'tworry about any safety related passivationthat may take place (your "standard" program will simply take the F-DB valuesand send them). Having said that, I personally would probably marshall (copy) all safety relateddata that are of interest from the (various) F-DB's and F-I/O's into a "standard" DB and send that one out. This way you minimize teh amoutn fo dat to be sent, have better control over when to copy the data (e.g. ensure data consistency) and can avoiddata marshalling in the Safety program. I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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