Industry Online Support
Technical Forum
Navigation
Connecting Sinamics S120 to S7-400H by PROFINET
Created by: Begemot at: 10/23/2012 3:12 PM (3 Replies)
Rating 
Thanks 0
4 Entries
| 10/23/2012 3:12 PM | |
Joined: 9/11/2007 Last visit: 2/13/2022 Posts: 8 Rating:
|
Hi, I see manual for new CPU S7-400H ver. 6.0 with Profinet support (I consider using CPU 412-5H). And I don't understand exactly how I can connect Sinamics S120 drives to S7-400H with system redundance by Profinet. For Profibus-DP it is clear: use Y-link. For Profinet as I understand I can connect Sinamics S120 to switch that support MRP (for example, SCALANCE XF208) and included in system redudance ring of S7-400H (see attached file with configuration). Is there any restriction about using such configuration? Kind Regards, Begemot
AttachmentTopologie_2012-10-23_17-07.pdf (734 Downloads) |
| 10/24/2012 3:33 AM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating:
|
HelloBegemot, To the best of my knowledge, the only Profinet IO device that has system redundancy feature is the ET200M 153-4 HF. In theDelivery Release for S7-400H V6 Including PROFINET Supportyou can read,
As long as SINAMICS S does not support system redundancy then you will have to configure it as one sided I/O. In case of failure of the CPU that's connected to the drive, the other CPU will not be able to communicate with this drive. I recommend to use the Y-Link and SINAMICS with Profibus module. I hope you know that in the Profinet solution with 400H system, you can't modify your hardware configuration and download the new one without stopping the Profinet I/Os. So, take care. Best regards, H-H |
| 10/24/2012 10:21 AM | |
Joined: 10/7/2005 Last visit: 11/18/2024 Posts: 3027 Rating:
|
Hello Begemot
I wish I could give you a definitive answer on this but am afraid to say that I can't as the whole issue of the newly available "System redundancy" for S7-400H is "clear as mud" as they say. For one, the link Delivery Release for S7-400H V6 Including PROFINET Support provided byH-Hdoes clearly state that "Other PN devices which do not support System Redundancy can be connected as "Onesided I/Os". Siemens own "glossy stuff" though (seehttp://support.automation.siemens.com/WW/view/en/60179783and https://www.click4business-supplies.com/resources/articles/e20001-a770-p210-x-7600.pdfindicates that "simple" PN devices (without system redundancy support and/or only single PN port on them) can be connected behind a switch (the switch itself ispart of the ring). Also, the current "System redundancy"implementation for S7-400 H systems is - as far as I'm concerned - really no more thanMRP in accordance with PI's "PROFINET I/O Media redundancy in Process Automation" specification (V0.9 Order No.: 7.092, ref: http://www.profibus.com/nc/downloads/downloads/pnio-media-redundancy-in-process-automation-systems/display). Changeover times (given as "typically" 30ms) seem to be faster than with "normal" MRP (up to 200ms with 50 PN devices) in case of wire breaks or station failure, butthisand the fact theEthernet ring is "closed" via the H-CPU's FO link,seems to be the only difference to "normal" MRP. Either way,I wish Siemens would NOT have used the term"System redundancy" for it, but insteadused PI's"Media redundancy" terminology for it (stuff like this does add to the confusion). Note that true Profinet "System redundancy"(as alwaysbeen available with a good old redundant Profibus network on a H system) is specified in PI's "PROFINET IO System Redundancy" document(V1.0 Order No.: 7.122, ref: http://www.profibus.com/nc/downloads/downloads/profinet-io-system-redundancy-1/display) and I'm hopeful the Siemens developers are feverishly working on an implementationof this. All from myside on this subject, perhaps someone out there can confirm or deny if what you plan is possible/supported (I'm inclined to say it is, but am speculating here), but it may not hurt anyhow to send a Support request to Siemens and keep us posted about the answer. |
|
Cheers |
|
Follow us on