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S7-300 F With Software redudancy

6/8/2011 9:54 AM	Rate (0)
RajD Advanced Member Joined: 8/2/2010 Last visit: 6/25/2025 Posts: 45 Rating: (1)	Hi, I have to design system where all IOs need to be Fail safe type Also the CPU should be redudant. Can I use two nos of S7-300F CPU's with software redudancy blocks & profibus redudant bundle IM153 ? I don;t want to fo for S7-400 HF. Is there any other solution? Thanks

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6/8/2011 10:14 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 1/19/2026 Posts: 3054 Rating: (1062)	I'm afraid there isn't dear AryaP (not in the Siemens world as far as I know anyhow). If you need Redudancy AND Safety, an S7 400 F/His the only way to go.
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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6/8/2011 3:27 PM	Rate (0)
Amit_86 Posts: 1750 Rating: (272)	AryaP Hi, I h Can I use two nos of S7-300F CPU's with software redudancy blocks & profibus redudant bundle IM153 ? Thanks Dear ArynP, Sorry to say bu not possioble in Siemens yet.
Amit_86 Posts: 1750 Rating: (272)
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6/9/2011 10:52 AM	Rate (0)
Jazz_M Posts: 1121 Rating: (86)	HI AryaP well as our friends said it is not possible, Please understand that software redudancy has its own draw backs in terms of switch over time, No of IO's used the size of the program.. etc. If you want Fail safe and redudacy then it is best for you engineering point of view to go for H system. So that the change over time is very fast and you will not have any restrictions on programming. Have fun....
Jazz_M Posts: 1121 Rating: (86)
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