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Offloading Working Memory of S7-1200 to S7-300

5/3/2012 10:33 AM	Rate (0)
Gee69 Posts: 5 Rating: (0)	Hi Guyz... Is there a way of storing the application data in an S7-1200 (1211 CPU) on a Flash or other non-volatile media, so that in process data is not lost in the event of power supply interruptions ? Thanks...
Gee69 Posts: 5 Rating: (0)
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5/3/2012 12:45 PM	Rate (0)
Gabriel de Oliveira Silver Member Joined: 2/16/2011 Last visit: 4/28/2025 Posts: 229 Rating: (28)	Gee69 Hi Guyz... Is there a way of storing the application data in an S7-1200 (1211 CPU) on a Flash or other non-volatile media, so that in process data is not lost in the event of power supply interruptions ? Thanks... Hello, It depends what do you need. Retain some data, you can use "Retain Memory" the size limit is the work memory. About 50kB depends the CPU. Large data, you can Store in Load Memory, but the access is throw Special Blocks, about 2MB it depends the CPU or SD Card that can be 24MB Regards.
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5/4/2012 6:06 AM	Rate (0)
Gee69 Posts: 5 Rating: (0)	Gabriel de Oliveira Gee69 Hi Guyz... Is there a way of storing the application data in an S7-1200 (1211 CPU) on a Flash or other non-volatile media, so that in process data is not lost in the event of power supply interruptions ? Thanks... Hello, It depends what do you need. Retain some data, you can use "Retain Memory" the size limit is the work memory. About 50kB depends the CPU. Large data, you can Store in Load Memory, but the access is throw Special Blocks, about 2MB it depends the CPU or SD Card that can be 24MB Regards. Thanks Gabriel. If size limit for "Retain Memory" is the available work memory itself it woud solve my problem. But I am told that the limit for 'retentive memory' is only 2kB and not the coplete 50 kB. Regards,
Gee69 Posts: 5 Rating: (0)
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5/4/2012 12:51 PM	Rate (0)
Gabriel de Oliveira Silver Member Joined: 2/16/2011 Last visit: 4/28/2025 Posts: 229 Rating: (28)	Gee69 Thanks Gabriel. If size limit for "Retain Memory" is the available work memory itself it woud solve my problem. But I am told that the limit for 'retentive memory' is only 2kB and not the coplete 50 kB. Regards, Hello, In M memory area you have 2K, but you can cretate DB's memory and check it to be retain up on you work memory is full. Regards.
	Last edited by: Gabriel de Oliveira at: 5/4/2012 12:52 PM Gabriel de Oliveira It Works? Rate It.
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6/1/2015 1:00 PM	Rate (0)
Min_Moderator Posts: 4757 Rating: (122)	New question published by Ali Doğan is split to a separate thread with the subject Profibus communication s71215 s7315. Best regards Min_Moderator
Min_Moderator Posts: 4757 Rating: (122)
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