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My redundand configuration works up to 4 Slaves only

Created by: Mahesh N at: 12/30/2013 6:02 AM (2 Replies)

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12/30/2013 6:02 AM	Rate (0)
Mahesh N Bronze Member Joined: 10/3/2013 Last visit: 9/14/2024 Posts: 125 Rating: (3)	Dear Sir, . I have S7-414H & IM153-2 (10Racks) on Profibus network. It works fine upto three racks with baud rate 1.5 Mbps but when I am taking fourth rack online then only master CPU could establish the network succesfully upto fourth rack & Stand by CPU fail to establish the network upto fourth rack, thats why it shows the redudncy fault also. With same configuration with baud rate 500Kbps then it working fine.(i.e. Redudncy, communication everything fine with 500Kbps). All rack within the same Panel. Max. Distance 10M. There is 12 modules on every rack.
	Last edited by: CS Moderator at: 12/31/2013 1:45 PM new subject after splitting from /tf/WW/en/Posts/99607#top
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12/30/2013 11:23 AM	Rate (0)
S7 AUTOMAN Posts: 515 Rating: (56)	Hi, Please check the data sheet of the selected cpu and verify whether it supports these many i/o's. Secondly if it works with a lesser baud rate and if it is fine for the process, then why dont you keep it as such?
S7 AUTOMAN Posts: 515 Rating: (56)
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12/30/2013 3:02 PM	Rate (0)
Mahesh N Bronze Member Joined: 10/3/2013 Last visit: 9/14/2024 Posts: 125 Rating: (3)	Dear Sir, Actually I have 25 total nodes .i.e Only IO , So, I need Speed atleast upto 1.5 Mbps. What is the reason?

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