7/4/2010 2:08 PM | |
Posts: 8 Rating:
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Dear Experts, I have one doubt. Is it possible to run a plant without having the MMC for S7-300 cpu? Regards RNK |
7/4/2010 2:38 PM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating:
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Hello RNK,
I hope you will find the following FAQ useful How can you obtain an overview of the memory concept of SIMATIC S7-300 CPUs and C7 devices? Best regards. H-H |
Last edited by: H-H at: 7/4/2010 2:40 PMAs usual Dnaiel is faster, I will just leave the post because it has some useful links |
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7/4/2010 3:00 PM | |
Posts: 8 Rating:
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Dear Experts, I agreed that but i saw in two sitesthe plant is running without having MMC. I think In older version cpu it is possible am i right? Regards RNK |
7/4/2010 5:17 PM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating:
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Hello RNK,Just 2 pictures beside what Mr. Daniel had already said, Old S7-300 with MC (Memory Card). New S7-300 with MMC (Micro Memory Card). Best regards. H-H |
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7/5/2010 9:01 AM | |
Joined: 5/28/2008 Last visit: 9/9/2024 Posts: 4515 Rating:
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I want only to give a conclusion. Both dchartier and H-H are right. If you are really meant "MMC" in your question, then the answer is: No. because the new S7-300 CPUs can not run without MMC. But if youwould like to know if the S7-300 CPUs can work without"Memory Card", then the answer is: yes, may be some CPUs can work without memory cards. Internal Flash Memory CPUs or IFM CPUs doesn't have memory card bay. But note that these CPUs "CPU312IFM" and "CPU314IFM" are phased out products. Please check: Product Phase-Out for SIMATIC S7-300 CPU 312IFM and 314IFM And as dchartier mentioned, Old S7-300 CPUs can work without memory card, but you have to use battery in this case. But these CPUs are phased out. and also the memory cards are phased out. To see the complete list of these MC and MMC as well, please have a look on the last two tables of this link : Which memory cards can you use with a S7-300 CPU? All new S7-300CPUs** now,I mean all CPUs you can order now can not work without MMC. **please note that the this link is from year 2002. And when you open the CA01 catalog, in the overview of any CPU, it is stated clearlly : SIMATIC Micro Memory Card required for operation of CPU. see attachment please. |
Last edited by: Ayman Elotaify at: 7/5/2010 9:07 AMLast edited by: Ayman Elotaify at: 7/5/2010 9:03 AMAyman Elotaify |
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