7/10/2013 1:36 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello Friends, Recently , we working on one S7400R Project, CPU Work Memory is 1MB which consists 0.5 MB Code Memory & 0.5 MB Data. During Engineering, We have obseverd that Program Code memory is almost full 98%. I was reading the post regarding "Unlink DB" here. What points do you need to remember during the handling of micro memory cards? The Example shows how to move data from/to load memory using SFC83 & SFC84? But is it possible to use this SFC83 & SFC84 with S7400 Memory Flash Card? Thanks in advance. |
Last edited by: Amit_86 at: 7/10/2013 1:49 PMWork Memory Data 11% & Work Memory Code 98% Last edited by: Amit_86 at: 7/10/2013 1:37 PMVANDE MATARAM..... |
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7/10/2013 2:42 PM | |
Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181) |
Bigger card is need it. http://support.automation.siemens.com/WW/view/en/53843369Someone didn't thought in advance aboutMemory Calculation SFC83/84 are not good for S7-400 memory card.
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This contribution was helpful to4 thankful Users |
7/10/2013 4:44 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
hello diamond, i have gone through the links and surely i will check for diagnostic buffer entry ,no of communcation jobs and process image input & outputs assignment tomorrow & revert back. But, do i need to change the flash memory card in this case? i didnot understand your first line that "bigger card is need it". Thanks in Advance. |
VANDE MATARAM..... |
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7/11/2013 8:43 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
hello diamond, i have gone through the links and surely i will check for diagnostic buffer entry ,no of communcation jobs and process image input & outputs assignment tomorrow & revert back. Thanks in Advance. Hello Diamond, I checked but all entry's are set as minimum as possible. Now I believe that Program Blocks needs to be optimize as much as possible to reduce the work memory. Thanks for your reply. But Still I am waiting for your reply for this "Bigger card is need it" |
VANDE MATARAM..... |
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7/13/2013 4:21 PM | |
Posts: 559 Rating: (87) |
Are you using any Flash card in your project? |
7/13/2013 4:31 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
YES.... |
VANDE MATARAM..... |
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7/14/2013 12:09 PM | |
Joined: 12/1/2009 Last visit: 9/5/2024 Posts: 672 Rating: (147) |
Hi Amit_86, are you using CFC's for your engineering? If yes, I am sure you know about the code generation of the CFC compiler. Itis not always very effecient. Try to reduce thecode in your blocks. Programmingnot using CFC might be an alternative for you (not always). Good luck |
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7/14/2013 1:47 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello, I am not using CFC Language in this case. Program codes are written in LAD/STL. Currently i am busy with Block Optimization only in order to reduce significant amount of work memory. FYI , Now, Work memory is 87% instead of 98%. |
VANDE MATARAM..... |
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7/14/2013 7:58 PM | |
Joined: 12/1/2009 Last visit: 9/5/2024 Posts: 672 Rating: (147) |
You will get there Amit_86! Keep on going By the way, does anybody know why we need to differentiate between code and data memory? That's old historyand structures from the 80' with S5. I hope beside asecret service agent a Siemens product manager is reading this post too. We need onework memory only without dividing it into code and data memory.A block is a block independent of the locationin the work memory. Actually we are in 2013. Best Regards. |
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7/17/2013 10:22 PM | |
Posts: 72 Rating: (6) |
Yoy can reduce unnecessary Dbs & use memory bits if possible. |
5/22/2014 3:20 PM | |
Posts: 73 Rating: (6) |
If you are facing issues with Work Memory size, there is no other option but to upgrade to a higher CPU. |
Last edited by: Krrish !! at: 5/22/2014 3:21 PM |
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5/23/2014 3:09 AM |
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Posts: 21 Rating: (1) |
Tit for Tat? It is just a technical forum & campaign? |
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