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mmc card selection and capacity requirement

Created by: gkhn__ at: 12/5/2010 4:00 PM (4 Replies)

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12/5/2010 4:00 PM	Rate (0)
gkhn__ Posts: 27 Rating: (0)	CPU 312 32 KB* MPI 6ES7 312-1AE14-0AB0 dear all, ordering catalog says cpu 312 need mmc card as normal because there is no battery nedded. but 32KB is standart for cpu 312 or can upgradeable ? by the way when writing program on simatic manager how can ı know how big mmc ı will need , when ı select all may fc,db,ob blocks on the right bottom corner a capacity appear says 7110 byte , is that the required memory or not also if ı adapt an scada program mmc requirment will increase or not ?
gkhn__ Posts: 27 Rating: (0)
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12/5/2010 4:10 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 7/12/2023 Posts: 10221 Rating: (1177)	Hello, 1. Which memory cards can you use with a S7-300 CPU? 2. How can you determine the size of the load memory and main memory of a SIMATIC S7-300/400 CPU? best regards, Hristo Mihalev

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12/5/2010 4:41 PM	Rate (0)
gkhn__ Posts: 27 Rating: (0)	Thank you mihalev it is helpful. Hello, 1. Which memory cards can you use with a S7-300 CPU? 2. How can you determine the size of the load memory and main memory of a SIMATIC S7-300/400 CPU? best regards, Hristo Mihalev
gkhn__ Posts: 27 Rating: (0)
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12/5/2010 5:09 PM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 7/3/2023 Posts: 2705 Rating: (314)	Hello, the CPU have a workmemory of 32 kB, that is the maximum programm size in the memeory of this CPU. The load memory is in the MMC, you may place the hole project on the memorycard and also handbooks if you want that, and of course the program itself. The program is loaded from load- to workmemory when the CPU is starting.
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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This contribution was helpful to 1 thankful Users Arasan

4/29/2016 3:42 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4794 Rating: (123)	New question published by AutoGen_6288252 is split to a separate thread with the subject Determine the size of memory card needed in TIA. Best regards Min_Moderator

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