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confused in S7300 memory

Created by: RSid at: 6/27/2014 10:09 AM (11 Replies)

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6/27/2014 10:09 AM	Rate (0)
RSid Advanced Member Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating: (0)	Dear, Please clear me i am confused in S7300 memory... i have different cpu whose working memory are different.. working memory is the internal memory of cpu with out MMC ?? Thanks
	Last edited by: CS Moderator at: 6/30/2014 1:09 PM new subject after splitting from /tf/WW/en/Posts/96580#top
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6/27/2014 10:24 AM	Rate (0)
vipz Gold Member Joined: 9/2/2012 Last visit: 8/15/2024 Posts: 711 Rating: (30)	Yes. Work memory is internal mem of cpu
	With Best Regards VIPZ
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6/27/2014 12:53 PM	Rate (0)
RSid Advanced Member Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating: (0)	Hello Vipz, Thanks for your response.. ok please let me confirm that in CPU317-2DP there is a slot of MMC. If i remove that MMC should i know how much the internal memory of my cpu is through SIMATIC MANAGER. Thanks, Regards RSid

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6/27/2014 2:26 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)	Hello, I think it's better to read the technical data of your CPU i.e. this one There is mentioned how much memory there is on the CPU. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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6/27/2014 8:15 PM	Rate (0)
RSid Advanced Member Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating: (0)	Dear Marcjan, Thanks it's mean that it's not possible to identify the size of internal memory via simatic manager.. In Simatic Manager if we go in file menu > s7 memory > checksum... if i click on checksum it gives error.. let me know the function of checksum.. Thanks, Regards, RSid

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6/28/2014 7:57 AM	Rate (0)
RSid Advanced Member Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating: (0)	Dear Marcjan, Please see this... It makes clear that how we find the size of load memory and main memory in Simatic Manager... How can you determine the size of the load memory and main memory of a SIMATIC S7-300/400 CPU? Thanks Regards, RSid

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6/30/2014 1:35 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)	Hello, i know that FAQ, you said you would remove the MMC to determine the CPU memory size. When you remove the MMC, you remove the load memory and your work memory will be empty. Regards, Marcjan
	Last edited by: Marcjan at: 6/30/2014 1:36 PM Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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6/30/2014 2:13 PM	Rate (0)
H_a_m_m_y Experienced Member Joined: 8/19/2013 Last visit: 8/26/2024 Posts: 148 Rating: (11)	Hello RSid, please have a look to the following page -> https://support.automation.siemens.com/WW/llisapi.dll?aktprim=0&lang=en&referer=%2fWW%2f&func=cslib.csinfo&siteid=csius&groupid=4000002&extranet=standard&viewreg=WW&nodeid0=33516848&objaction=csopen There you can find the technical data of your plc 317-2DP If you want to know the size of the memory, you can use this page to find out how big the memoryisfor every siemens plc -> https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo2&siteid=csius&lang=en&aktprim=99&siteid=csius&prodLstObjId=48161943&extranet=standard&groupid=4000002&viewreg=WW&nodeid0=33516848 under "self search" I guess this is the easiest and most comfortable way... Regards !
	Last edited by: H_a_m_m_y at: 6/30/2014 2:14 PM
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7/1/2014 7:32 AM	Rate (0)
RSid Advanced Member Joined: 3/20/2014 Last visit: 12/11/2022 Posts: 87 Rating: (0)	Hello Marcjan, Yes you are right.... please verify me if i am correct In MMC all blocks are stored except data block and data blocks are stored in work memory...? For Download program in Simatic Manager we go in PLC > Download... with this option program download completely in the cpu or MMC? or after this it is necessary to do this PLC > Download user program to memory card.. ?? Thanks Regards, RSid

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7/1/2014 7:40 AM	Rate (1)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)	RSid In MMC all blocks are stored except data block and data blocks are stored in work memory...? All blocks are stored on MMC only program relevant blocks are loaded (from MMC) in work memory. RSid For Download program in Simatic Manager we go in PLC > Download... with this option program download completely in the cpu or MMC? or after this it is necessary to do this PLC > Download user program to memory card.. ?? with a download program is stored to MMC, with a newer 300 series(with MMC) you don't need to download user program to memory card. This option stores the program on the big blue card in a S7-400 or older 300 system. Regards, Marcjan Attachment mmc_mc.JPG (187 Downloads)
	Last edited by: Marcjan at: 7/1/2014 8:26 AM Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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