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S7400-h CFC download error

Created by: maddyk at: 5/19/2016 7:19 AM (2 Replies)

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5/19/2016 7:19 AM	Rate (0)
maddyk Experienced Member Joined: 4/30/2012 Last visit: 1/12/2023 Posts: 55 Rating: (1)	Dear All, We have s7-400 H(CPU412-5H) system. we want to program it in CFC. When I download to plc It give error"local data requirment for OB85 is larger than local data stack configured in connected online cpu". Pls suggest what to do. regards Mandar Attachment Error.pdf (20 Downloads)
	Last edited by: Min_Moderator at: 5/19/2016 3:07:54 PM Convert attachment to pdf
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5/20/2016 1:36 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 2/21/2023 Posts: 6794 Rating: (1341)	Dear User, The H-CPU you are using is too slim for extensive applications, I guess this is why the CFC editor complains.The workaround is to manage the memory allocated for each priority classes in properties of CPU.If this can not solve your problem totally , you need a better (more resources and execution time)CPU. Note: change the mentioned settings and downloading is only possible while CPU in STOP. I hope this helps, hdhosseini
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5/20/2016 2:24 PM	Rate (0)
jigarhg Posts: 24 Rating: (1)	maddyk Dear All, We have s7-400 H(CPU412-5H) system. we want to program it in CFC. When I download to plc It give error"local data requirment for OB85 is larger than local data stack configured in connected online cpu". Pls suggest what to do. regards Mandar Dear maddyk, You need to change the settings in local data(priorty classes). Local Data setting is a CPU properties in "Memory" tab in hardware configuration.. You have to know which OB need more Local Data, see what is the priority, then change configuration in right Local Data.You have to rearrange manually the runtime group or change Local Data setting to be able to download program without problem.
jigarhg Posts: 24 Rating: (1)
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