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HMI connect to Redundant PCL S7-313-2DP using SW redundancy
Created by: Anhhk at: 10/25/2008 12:09 AM (5 Replies)
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| 10/25/2008 12:09 AM | |
Joined: 6/25/2007 Last visit: 8/21/2013 Posts: 2 Rating:
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Dear All, I design a system with HMI panel connect to Redundant S7-300 CPU 315-2DP (using SW redundancy). Please review wether I can use this configuration? Thanks & waiting for your reply! BR, Anhhk Attachment080801 SW redundant.pdf (847 Downloads) |
| 10/25/2008 3:13 AM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating:
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Hello Anhhk, I'm afraid this configuration is incorrect (regarding HMI). You can't connect the 2 Profibus networks like this and they are not to be connected by way or another. I justwant to comment on somethingin your drawing. The redundant linkcan't be Profibus because you didn't add CP 342-5. Ijust hope you know that redundant link must be one of the followings, 1- MPI (Just the 2 CPUs) 2- Profibus (CP342-5must be added to each CPU) 3- Ethernet (CP343-1must be added to each CPU) So, I think it's just a mistake and it should be MPI instead of Profibus in your drawing. Now we come to HMI, You can connect your HMIto the MPI network andyour network will be like this, HMI --- PLC A --- PLC B. Then you can do some programming to make an Automatic switch overin HMI using change control function in HMI. But you may suffer a little from slow communication because this single bus will have to transfer data between A&B all the time and will also be used for communication between Master PLC and HMI. You can download the manual and see how the HMI can be connected to SWR system in chapter 5 and 6 using MPI bus. Best regards. |
| 10/27/2008 7:20 PM | |
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Posts: 487 Rating:
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Here are some info that could be helpful eventhough it talks about H-system http://support.automation.siemens.com/WW/view/en/22584322 But what I have normally done is to put the MP on the MPI link iwth each CPU having separate MPI address, Then you can have scripts in MP to switch the peer CPU address. You can use the status bit from redundancy DBs for triggering the scripts. |
| 10/28/2008 8:49 AM | |
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Joined: 6/25/2007 Last visit: 8/21/2013 Posts: 2 Rating:
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Dear H-H and JMJ, Thank you very much for your supports!!! I'm clear for this configuration now! Best regards, Anhhk |
| 10/13/2014 1:31 PM | |
Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4767 Rating:
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