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network topology possible in PCS7?

Created by: OdimJMC at: 1/20/2009 1:49 PM (7 Replies)

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1/20/2009 1:49 PM	Rate (0)
OdimJMC Posts: 4 Rating: (0)	Hello I'm trying to obtain fault tolerance through redundancy. Can someone verify if the proposed topology attached is possible. And how it would then be set up in PCS7. Most likely I will also consider not using ring 1 and 2 but go for a simple star 1 and 2. since all of the single CPU plc's are located in the same room. What I want is forall PLCs to be available to both OS servers and that the OS clients will receive data from the (preferred) server and that the clients will automatically use data from the "live" server if one of the servers "goes down". Obviously I am trying to save money, while still having a high(er) availability system. If I need to manually configure and program my own solutions to obtain the desired solution, I will go for a PCS7 supported solution. If this seems to be the case, what would the best solution be? Thanks in advance. Attachment Topology.pdf (455 Downloads)
OdimJMC Posts: 4 Rating: (0)
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1/20/2009 11:55 PM	Rate (0)
Phantom75 Posts: 2661 Rating: (279)	Hi, Terminal Bus is fine... For Plant Bus I would use 2 CP1613's in each server and have 2 separate rings or 1 CP1613 in each server and a combined single ring... Regards
Phantom75 Posts: 2661 Rating: (279)
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1/21/2009 9:04 AM	Rate (0)
CBo Gold Member Joined: 4/5/2006 Last visit: 3/5/2025 Posts: 917 Rating: (63)	Hi OdimJMC there are more than one possible configuration...depends what is more important: full tollerant system or money OdimJMC ... Most likely I will also consider not using ring 1 and 2 but go for a simple star 1 and 2. since all of the single CPU plc's are located in the same room. ... Obviously I am trying to save money, while still having a high(er) availability system. ... As Phantom said Terminal Bus is okies (Server-Client network) I was thinking 2 different possibility about System Bus (Server - PLC network) I don't know what PLC are you using, so let's me says you can use full tollerant connection when you use "AS400-H series". One more, you said AS are in same room, that means you could use SCALANCE X200 for system bus and connect them in star or ring way as you want (SCALANCE X200 can manage ring) *1st solution (AS400-H system)* - 2 CP1613 for each server - 2 Scalance X200 in ring (1st CP connected on 1st scalance and 2nd CP on 2nd scalance) - make connection with 2 scalance (make more high avalibility) - AS400-H with 2 CP443-1 *2st solution (AS400 not H system)* (can't use full tollerant connection) like before but only: - 1 CP1613 - 1 Scalance X200 - 1 CP443-1 Hope is want you asked, anyway depends from you... Regards

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1/21/2009 1:18 PM	Rate (0)
OdimJMC Posts: 4 Rating: (0)	Hello again Thanks for your replies. So, if you look at my revised topology, I have tried to understand the last suggestion in the last post. I will be using H cpus. I have added one more CP card per server The X-400 in the plant bus ring might not be required? My questions are: Is this a possible solution and how would it be configuredPCS7 to ensure automatic redundancy handling? Have in mind that I do not want to make some proprietary software to ensure this functionality. Pure PCS7 mechanisms are needed. PS I will also add an engineering station or an ES/OS I will also add a web server to one of the OS stations. Thanks in advance. Attachment Topology 2.pdf (368 Downloads)
OdimJMC Posts: 4 Rating: (0)
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1/21/2009 2:37 PM	Rate (0)
jspino Posts: 37 Rating: (2)	Hello, I don't see the value of the two 1613 in your OS Severs as you still have a single point of failure with x400 they are connect to. Why don't you purchase two x-400 and connect one OS Server to one and the other OS Server to the other one.Connectthetwox-400 together with the Gigabit port. The just connect one CP443 to one switch and the other CP443 to the other switch. Why do you need two 1613 is your OS Server as they are redundant to begin with. For your Terminal bus,I would recommend Teaming and remove the ring. Plus don't forget that the OS Client acting as a Web Server needs 2003 Server installed.
jspino Posts: 37 Rating: (2)
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1/21/2009 9:06 PM	Rate (0)
CBo Gold Member Joined: 4/5/2006 Last visit: 3/5/2025 Posts: 917 Rating: (63)	Hello, I'm agree jispino...every redundand but not System Bus ...no sense!!!! I suggested nr 2 scalance X-200family because you have few connection, and ring managed too. Same for Terminal Bus, a lot of money cost to use X400. P.S.: you said you are using AS400-H...that means drawing has a il mistake about CPU? it show 2 CP443-1 on same CPU... Anyway, configuration can works with standard PCS7 configuration. Regards

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1/22/2009 7:51 AM	Rate (0)
OdimJMC Posts: 4 Rating: (0)	Thanks for all forthe comments. I agree that since the servers are redundant, I do not really need two CP1613 in each server. I want to keep the ring for the terminal bus, because the clients are located in another location than the servers and PLCs. I want dual CP cards in each single CPU400HAS in order to be able to set preferred server for each AS and also obtain higher availability of data on the plant bus. Have a look at revision 3 of the topology and please comment. Attachment Topology 3.pdf (338 Downloads)
OdimJMC Posts: 4 Rating: (0)
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1/22/2009 11:41 AM	Rate (0)
CBo Gold Member Joined: 4/5/2006 Last visit: 3/5/2025 Posts: 917 Rating: (63)	Hi OdimJMC, OdimJMC ... I want dual CP cards in each single CPU400HAS in order to be able to set preferred server for each AS and also obtain higher availability of data on the plant bus. ... I don't understand what do you means about "set preffered server": both server work separately with AS, and keeping data synchronization between themself (thhere is NO preffered Server). You can keep only one CP443-1for each AS too. I think you can change X-400 with X-200. Everythingelseseems to be good. Regards

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