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Created by: martinrelayer at: 9/3/2012 7:06 PM (4 Replies)

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9/3/2012 7:06 PM	Rate (0)
martinrelayer Posts: 60 Rating: (0)	hello, I would like to know the serial number difference between cpus with or without batteries. What's the difference between cpu-31xC and cpu-31x? regards
martinrelayer Posts: 60 Rating: (0)
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9/3/2012 11:35 PM	Rate (0)
Ayman Elotaify Platinum Expert Joined: 5/28/2008 Last visit: 9/26/2023 Posts: 4477 Rating: (830)	martinrelayer hello, I would like to know the serial number difference between cpus with or without batteries. What's the difference between cpu-31xC and cpu-31x? regards Hello, In the old types of S7-300 CPUs, Memory cards was used and also battery module. In new types only MMC is required. Which memory cards can you use with a S7-300 CPU? In the above link, the CPUs with MC are those CPUs which have a battery module, and CPUs with MMC are which doesn't have a place for batteries. Where can you find information about the S7-300/400 backup batteries? CPU31x-C are called Compact CPUs. It have intergated I/Os with technological functions. CPU31x are standard CPUs. And it does not have any integrated I/Os. For detailed differences, please see technical specificatation of CPUs you want to compare. Just write the part number or type of CPU in the search field and see its technical specification. Hope this helps.
	Ayman Elotaify
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9/4/2012 12:27 PM	Rate (0)
martinrelayer Posts: 60 Rating: (0)	cristal clear! thanks! we can only use siemens micro memory cards? or is possible to use other brands?
martinrelayer Posts: 60 Rating: (0)
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9/4/2012 2:50 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating: (708)	Hello, You can only use Siemens cards, there is a special immage on it. Never use windows to format it or you end up with a expencive card for camera. 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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This contribution was helpful to 1 thankful Users Ayman Elotaify

9/4/2012 10:38 PM	Rate (0)
Ayman Elotaify Platinum Expert Joined: 5/28/2008 Last visit: 9/26/2023 Posts: 4477 Rating: (830)	Hello, I am agree with Marcjan. I would like to add a small thing which is that you do not have any option to use different memory cards. SIMATIC MMC size is different than other commercial memory cards. In this link you will found some data about commercial memory cards, If you have a SIMATIC MMC in your hand, please note the differences between them: http://www.differencebetween.net/technology/difference-between-sd-and-mmc/ Hope this helps.
	Last edited by: Ayman Elotaify at: 9/4/2012 10:49 PM Ayman Elotaify
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