7/17/2013 12:06 PM | |
Posts: 1064 Rating: (72) |
126 with repeaters |
This contribution was helpful to1 thankful Users |
7/18/2013 2:53 PM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating: (308) |
Hello Steve,
I'm sorry Steve. I think you are wrong this time. Whatlakebodomread in the catalog is right. The 1st integrated interface of this CPU is MPI/DP and can handle32 slaves only. Hellolakebodom, You will have to use IF964 which can communicate with 96 slaves but has a limited address area of 6 Kbyte. You said you have 42 slaves. I'm sure this is not the case but just for your info. each slave can have up to 244 byte of I/O depending on the amount of data you need from each slave. In a worst case scenario if all your slaves are pushed to their limits (244 bytes) then you will need 10248 byte of address area. In this case you may need an external CP because the 1st interface has 2Kbyte and the 3rd interface has 6Kbyte and you need 10 Kbyte of address area.. Best regards. H-H
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This contribution was helpful to1 thankful Users |
7/19/2013 4:06 PM | |
Joined: 6/13/2012 Last visit: 3/28/2024 Posts: 64 Rating: (0) |
Thank you very much for your answers. Wich CP could i use to extend the number of the slaves? Thank you
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7/19/2013 4:27 PM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating: (308) |
Hellolakebodom, As I told you, I don't think you need 244 Bytes from all your slaves. Please study the amount of data that you have/need from each slave. Anyhow, If your address areas are more than the 2Kbyte plus the 6Kbyte you will needCP443-5 EXTthat can address 125 slaves but has a limited address area of 4K byte. H-H
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7/19/2013 4:30 PM | |||||||||
Joined: 9/27/2006 Last visit: 10/17/2024 Posts: 12289 Rating: (2687)
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Hello lakebodom; You would need a CP 443-5, Profibus-DP master comm. processor for the S7-400 CPUs:
See the contents of the Technical Data tab:
Hope this helps, Daniel Chartier |
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Last edited by: dchartier at: 7/19/2013 4:35 PMLast edited by: dchartier at: 7/19/2013 4:33 PMLast edited by: dchartier at: 7/19/2013 4:33 PM |
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