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CPU315-2DP can not remember new program

Created by: phucxdtd at: 8/2/2023 1:32 AM (1 Replies)

8/2/2023 1:32 AM	Rate (0)
phucxdtd Advanced Member Joined: 8/20/2016 Last visit: 11/4/2024 Posts: 87 Rating: (0)	I have a CPU s7-300 as the following picture, now I change program inside it but if CPU was power off then new program is disappeared and old program was still remain. I think if battery is emty power then all of program is disappeared but in this situation, only changed part of program can not remember, the old program still remain. I can not interpret the situation. Thank for your answer. Attachment 1.jpg (345 Downloads)

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8/2/2023 6:19 AM	Rate (0)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 11/12/2024 Posts: 4024 Rating: (602)	Hi, When executing the function "Copy RAM to ROM ...", the programme and data blocks relevant to the process are copied from the internal RAM load memory to the memory card. Check this: What is the effect of the STEP 7 function "Copy RAM to ROM"? Regards, Towome
	Last edited by: Towome at: 08/02/2023 06:27:12 If my post was useful, please rate me - if not, please tell me - thank you!
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