6/29/2009 12:19 PM | |
Joined: 6/8/2007 Last visit: 10/18/2024 Posts: 54 Rating: (3) |
Hi all, I have a CPU313C (6ES7 313-5BF03-0AB0, firmware 2.6.3) that presents some pretty unusual behaviour. Sometimes after power up, all the LEDs start flashing. I have set up a test on my desktop, wired a relay coil to an output, and the power supply of the CPU through a NC contact, and wrote a small program so that the CPU's power is cycled every 10 seconds after startup of the CPU. After around 30 cycles (sometimes less) the CPU goes into the DEFECTIVE state. You can see the diagnostic buffer attached. I would say the CPU is defective and should be changed. But here are the strangest parts: 1. I have tried the same test on several other CPU313C with different MMC cards, also firmware ver. 2.6.4 and ver. 2.6.6, same results; LEDs flashing after 20-30 power cycles. 2. However, if I download some more DBs into the CPU, this problem disappears, and I can't find out the reason. I'm suspecting that this could be related to some CRC problem, memory size problem, but I can't figure out at which used memory size does the problem appear. Any help would be appreciated. Thanks, Boti AttachmentDiagnose_DEFECTIVE.PDF (897 Downloads) |
6/29/2009 12:32 PM | |
Joined: 6/8/2007 Last visit: 10/18/2024 Posts: 54 Rating: (3) |
Yes. |
6/29/2009 1:48 PM | |
Joined: 6/8/2007 Last visit: 10/18/2024 Posts: 54 Rating: (3) |
We have contacted out local Siemens representative, they weren't much of a help |
6/29/2009 2:13 PM | |
Posts: 8946 Rating: (999) |
Just use this link: https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.cssr&lang=en&aktprim=99&siteid=cseus |
6/29/2009 10:57 PM | |
Joined: 8/25/2005 Last visit: 10/5/2024 Posts: 1162 Rating: (111) |
Hello jboti, |
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