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Download to Flash Memory in S7-400

Created by: Maha at: 10/24/2009 9:02 AM (8 Replies)

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10/24/2009 9:02 AM	Rate (0)
Maha Posts: 118 Rating: (4)	Hi All, I am using S7-400 CPU(414-3XM05-0AB0) with Flash Memory card, whenever I am downloading individual blocks its asking to compress memory otherwise we need to download the whole projects in to Memory card. Is there any way to download indiviual blocks to Flashmemory (same like normal dnload to RAM)? I can't change Flash Memory to RAM.
Maha Posts: 118 Rating: (4)
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This contribution was helpful to 1 thankful Users H.Gashasi

10/24/2009 9:49 AM	Rate (0)
Ayman Elotaify Platinum Member Joined: 5/28/2008 Last visit: 9/3/2025 Posts: 4522 Rating: (843)	Dear Maha, Please tell us what is the size of the memory card you are using in the CPU? or tell us the MLFB of the memory card. Also check the size of your application software. Open Simatic manager, right click on blocks (in the left hand side tree) and select object properties and select blocks mask. I think you will fond the required space of work memory is greater than the size of the memory card. If so, please check to see if you can increase the memory of the CPU.
	Ayman Elotaify
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10/25/2009 3:19 PM	Rate (0)
Kamal Posts: 6 Rating: (0)	Hello, Looks like you download to the CPU with the memory card plugged in. This is not possible with the flash cards, it's only possible with RAM cards. For flash cards you need a Prommer, you can use the one in you PG, or if you don't have PG, you can go with an external one 6ES7792-0AA00-0XA0
Kamal Posts: 6 Rating: (0)
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10/27/2009 6:27 AM	Rate (0)
Maha Posts: 118 Rating: (4)	Hi, I think Kamal understood my question, but not required with prommer, we can do by using the option in Simatic that "Download user program to memory card". but only we can download all blocks...not invidual one..i need to download individual block dnload to Flash.
Maha Posts: 118 Rating: (4)	Last edited by: Maha at: 10/27/2009 6:28 AM
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11/9/2009 10:18 AM	Rate (1)
H-H Platinum Member Joined: 7/2/2008 Last visit: 8/7/2025 Posts: 928 Rating: (309)	Hello Maha, To the best of my knowledge, you can't download individual blocks to flash memory card. You can't even download to flash card unless CPU is in STOP mode. When you edit some blocks and download them, you just download them to worm memory of CPU not to flash card. Please check the attached PDF. Best regards. H-H Attachment Flash or RAM.pdf (1908 Downloads)

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11/9/2009 11:37 AM	Rate (0)
Maha Posts: 118 Rating: (4)	Hi H-H, Thank you very much fro the reply. We have ordered some RAM for in house testing from the local siemens. But this is not the same for CPU317-2DP, is in it? I heard from my seniors that we can download individual blocks to flash in 317 cpu.
Maha Posts: 118 Rating: (4)	Last edited by: Maha at: 11/9/2009 11:39 AM
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11/9/2009 12:21 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 7/2/2025 Posts: 703 Rating: (98)	Hello, the newer S7-300 CPUs use the MMC load memory which is Flash type (permanent without power), but different then the FLASH mem for the S7-400. With MMC you can do the same as with the RAM load memory. Regards Sydney

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This contribution was helpful to 1 thankful Users Maha

11/9/2009 4:23 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	In the flash-memory S7-400 can not load the blocks separately. In the flash-memory can only be recorded all the blocks. How make -see in Pdf. flash-memory will be completely rewritten Attachment flash.pdf (1309 Downloads)
gre_m Posts: 947 Rating: (45)
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This contribution was helpful to 1 thankful Users Maha

12/9/2009 1:18 PM	Rate (0)
farra Advanced Member Joined: 10/11/2006 Last visit: 4/10/2025 Posts: 101 Rating: (2)	Dear Maha, As H-H said "When you edit some blocks and download them, you just download them to work memory of CPU not to flash card". I think what you need is to compress work memory by: 1. with an on-line connection to CPU 2. R.Click on CPU from project tree 3. select PLC>Module Information 4. Goto Memory tab 5. Click "Compress Memory" Button Note that CPU should be in RUN-P mode to allow memory compression. the above procedure will compress the work memory (defragment the space) and you will be able to download individual blocks. but to back up the new blocks you need to burn them on the flash EPROM using the "Download user program to memry card" option which can be done only with CPU in STOP mode. Regards,

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