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s7-400H redundant system

Created by: maddyk at: 4/27/2016 6:39 AM (8 Replies)

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4/27/2016 6:39 AM	Rate (0)
maddyk Experienced Member Joined: 4/30/2012 Last visit: 9/23/2024 Posts: 55 Rating: (1)	Dear All, Is it possible to have s7-400H redundant system with s7-400 IO card? I don't required IO redundancy. If possible can anybody share sample program. Regards, maddy

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4/27/2016 6:43 AM	Rate (0)
Ibrahim Fathy Bronze Member Joined: 9/18/2013 Last visit: 2/20/2024 Posts: 203 Rating: (12)	maddyk Dear All, Is it possible to have s7-400H redundant system with s7-400 IO card? I don't required IO redundancy. If possible can anybody share sample program. Regards, maddy Hello maddyk, Why do not you try it in the hardware configuration? Just try to put the IO module on S7 400 rack beside one of the CPUs.

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4/27/2016 7:01 AM	Rate (0)
maddyk Experienced Member Joined: 4/30/2012 Last visit: 9/23/2024 Posts: 55 Rating: (1)	Hi Ibrahim Fathy Thanks for your reply. But suppose i put IO's on one of the CPU, and that cpu goes in stop mode then how will other CPU will access the IO. Regards, Maddy

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4/27/2016 7:07 AM	Rate (0)
SMIT SHAH Silver Member Joined: 7/24/2014 Last visit: 12/4/2023 Posts: 392 Rating: (66)	maddyk Hi Ibrahim Fathy Thanks for your reply. But suppose i put IO's on one of the CPU, and that cpu goes in stop mode then how will other CPU will access the IO. Regards, Maddy Dear maddyk The io card that you are placing on the 400 rack suppose on rack1 and if rack1 cpu goes to stop then that io's i h=think will not be accessible to cpu2
	Thanks and Regards Smit Shah If Helpful please hit thanks and rate it
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4/27/2016 7:18 AM	Rate (0)
Navnag Platinum Member Joined: 11/21/2007 Last visit: 9/25/2024 Posts: 2325 Rating: (308)	maddyk Is it possible to have s7-400H redundant system with s7-400 IO card? I don't required IO redundancy. If possible can anybody share sample program. Hello You can use S7-400 Modules in Central racks and Expansion Units. For details Refer S7-400H Manual : SIMATIC Fault-tolerant systems S7-400H See Chapter-13 for details You have the following options : Single-channel one-sided I/O Redundant One Sided I/Os. Hope this helps Cheers Navnag
	Last edited by: Navnag at: 4/27/2016 7:45:30 AM There is no such thing as the last bug in a program There are no stubborn bugs, There are only stubborn Debuggers.
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4/27/2016 7:33 AM
Ibrahim Fathy Bronze Member Joined: 9/18/2013 Last visit: 2/20/2024 Posts: 203 Rating: (12)	maddyk Hi Ibrahim Fathy Thanks for your reply. But suppose i put IO's on one of the CPU, and that cpu goes in stop mode then how will other CPU will access the IO. Regards, Maddy Hello, Sorry I may have misunderstood your question

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4/27/2016 8:13 AM	Rate (0)
AMAZINGAHMED Gold Member Joined: 8/27/2006 Last visit: 10/22/2024 Posts: 719 Rating: (88)	maddyk Dear All, Is it possible to have s7-400H redundant system with s7-400 IO card? I don't required IO redundancy. If possible can anybody share sample program. Regards, maddy I think the best practice is to put the redundant CPUs/CPs on the central rack. For redundant I/Os or even simplex I/Os that you need to access from both CPUs, you can use either RED-BUNDLE (which is 2 ET200M) with S7-300 I/O modules. Another solution is to get only one ET200M with S7-300 modules and connect it to both CPUs using a Y-Link.
	The more you know, The more you know that you don't know
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4/27/2016 8:35 AM	Rate (0)
Kirtipatel87 Advanced Member Joined: 3/6/2012 Last visit: 11/1/2021 Posts: 23 Rating: (6)	maddyk Dear All, Is it possible to have s7-400H redundant system with s7-400 IO card? I don't required IO redundancy. If possible can anybody share sample program. Regards, maddy Dear Maddy , Find Attachment of S7 400 H redundant System Sample PLC Program... Attachment S7400HSampleProg.zip (384 Downloads)

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4/30/2016 12:21 PM	Rate (0)
Dhaval Abotiyawala Experienced Member Joined: 11/29/2014 Last visit: 9/13/2024 Posts: 96 Rating: (23)	maddyk Dear All, Is it possible to have s7-400H redundant system with s7-400 IO card? I don't required IO redundancy. If possible can anybody share sample program. Regards, maddy It is not possible with s7-400 io card...!!!

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