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Can I consider that S7-315 PN/DP is compatible with software redundancy?

8/17/2009 7:08 PM	Rate (0)
TLIMA Posts: 2 Rating: (0)	Sulung I did this project almost a year ago. Some guy ask for example. This is the program that i did last year. Hopefully will help others. One more thing, use : SWR_AGSEND_300 for software redundant block Attachment:redundant.zip (14 Downloads) Hello Mrs. Sulung, you have used a S7-319 PN/DP CPU to configure this redundancy. I had been looking in a few documentations about this SW, and these documents didn´t say anything about the utilization of PN/DP CPU´s. Sulung, by looking you post, can Iconsider that S7-315 PN/DPis compatible with software redundancy? Thx.
TLIMA Posts: 2 Rating: (0)	Last edited by: CS Moderator at: 8/18/2009 3:38 PM new subject after splitting referred posting inserted
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8/17/2009 9:25 PM	Rate (0)
H-H Platinum Member Joined: 7/2/2008 Last visit: 8/7/2025 Posts: 928 Rating: (309)	Hello TLIMA, It is possible to use S7 315-2 PN/DP CPU for software redundancy. You may not find it listed in documentation you have seen because software redundancy documentation is rather old (Last update was in 2003) while the 1st 315-2 PN/DP CPU was introduced in 2004. Software redundancy solution enables anyDP CPUs to be redundant if there is appropriate way to communicate between each other (redundant link). So forS7 315-2PN/DP, you must use the integrated Profibus port as a DP master and use Profibus CPs or Ethernet CPs to build a redundant link. Best regards. H-H

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8/18/2009 2:35 PM	Rate (0)
TLIMA Posts: 2 Rating: (0)	H-H So, mustIuse a Profibus CP into one of my CPU while in the other CPU PN/DP I use the integrated port? If I use the integrated communication port of my PN/DP with other integrated comm. port to establish a redundant link,it would not work, am I correct? Iam thinking in use the integrated ports of my CPU to do this redundant link.
TLIMA Posts: 2 Rating: (0)
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8/18/2009 9:10 PM	Rate (0)
H-H Platinum Member Joined: 7/2/2008 Last visit: 8/7/2025 Posts: 928 Rating: (309)	Hello TLIMA, TLIMA So, mustIuse a Profibus CP into one of my CPU while in the other CPU PN/DP I use the integrated port? No I didn't mean this at all. First of all you should determine what type of redundant link you will go for. MPI redundant linkwill doif it's a small system. Otherwise it should be either FDL or ISO connection. The integrated DP port can be either DP or MPI. So, you can configure the integrated DP port as MPI port and have redundant link based on MPI. BUT you will have to add another DP master behind each CPU in order to be able to connect your ET200M stations. TLIMA If I use the integrated communication port of my PN/DP with other integrated comm. port to establish a redundant link,it would not work, am I correct? As said above, the MPI is the only possible solution for integrated ports. Redundant link can't be established over the integrated PN & DP. I highly recommend to configure DP port as a DP master to connect your ET200Ms and use either two CP342-5 or two 343-1for redundant link. (Please look at the attachment) Best regards. H-H Attachment SWR 315-2PN-DP.pdf (632 Downloads)
	Last edited by: H-H at: 8/18/2009 9:14 PM
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