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behavior of other brand redundant system during changes download

Created by: Navnag at: 10/30/2011 2:12 PM (3 Replies)

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10/30/2011 2:12 PM	Rate (0)
Navnag Platinum Member Joined: 11/21/2007 Last visit: 9/25/2024 Posts: 2325 Rating: (308)	Dear Umencho Do other manufacturer's Redundant Systems also have a similar issue ? ( Both CPUs go to STOP mode when a download is performed ) I mean, what is the whole point of using a 400H system when we cannot download even small changes ( From Programmer / Customer's Point of view ) without disturbing the process. Many times the system is put into operation while some parts of the plant may not be ready. We have to download the blocks / Hardware for these parts, as and when these are ready, with the plant running. Regards Navnag
	Last edited by: O_Moderator at: 10/31/2011 7:48 AM new subject after splitting from /tf/WW/en/Posts/38709#top Last edited by: Navnag at: 10/30/2011 2:21 PM Last edited by: Navnag at: 10/30/2011 2:19 PM 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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10/30/2011 5:02 PM	Rate (0)
Hal Limmer Experienced Member Joined: 4/17/2007 Last visit: 7/26/2024 Posts: 47 Rating: (1)	We have been using PCS7 H system for a few years and have been able to add remote racks (ET-200) profibus drops without any stops in the CPU's. Only thingis ifyou change interfaces to the blocks you must put it in stop, but this can be avoided by leaving the block and creating a new one, clean up when you can stop the process. Not sure why you are always going into stop, make sure that your settings are to download "changes only" Good Luck!

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10/30/2011 5:36 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 12/2/2024 Posts: 10229 Rating: (1181)	Hello Navnag, What is the behavior of other brand redundant system in case of download? Sorry I don't know, don't have any experience with that. But is good idea to split this issue like a new thread. Back to your question - I think is clear any modifications into the hardware is lead to restart of CPUs. And this is valid for all brand of CPUs. Above mentioned FAQ said what are possibilities of downloading software changes without STOP of CPU. To be honest during commissioning almost in all cases is need to download a changes in order to fix some 'bugs' as you said. But during commissioning I think is acceptable and reasonable that. Let's see the other members. Personally I am waiting for opinion of H-H about that. best regards, Hristo Mihalev
	Last edited by: UMENCHO at: 10/30/2011 5:36 PM typo
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10/31/2011 7:10 AM	Rate (0)
Navnag Platinum Member Joined: 11/21/2007 Last visit: 9/25/2024 Posts: 2325 Rating: (308)	Hello Some Interesting discussions : http://www.control.com/thread/1026153895 http://www.control.com/thread/1026233104 Regards Navnag
	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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