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Diagnostic buffer CPU414-4h

3/29/2010 5:41 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	1. Where is the diagnostic buffer: in non-volatile memory or he is discharged after removal from Rack? 2. How can reset the diagnostic buffer in the original state: This can only Siemens or failure of RAM or other reasons?
gre_m Posts: 947 Rating: (45)
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4/4/2010 1:32 AM	Rate (0)
H-H Platinum Member Joined: 7/2/2008 Last visit: 12/21/2025 Posts: 929 Rating: (309)	Hello gre_m , The diagnostic buffer is located in code memory in CPU's work memory (Main memory). So, it's not non-volatile and will be lost(reset) whenever you lose power /backup batteries. You can read more in, How can I get an overview of the S7-400 memory concept? Best regards. H-H

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