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4/21/2009 1:24 PM | |
Posts: 101 Rating: (0) |
Dear All, I am facing a problem with S7 400 H system, in which secondary (slave) PLC CPU all LEDs are blinking. I am herewith enclosing the diagnostic messages. Is it related to HW fault. Whether CPU needs replacement? The spare CPU is without MMC. Event 1 of 1500 is check sum error. No relevance for user (Z1): 0003 Previous operating mode: STOP (internal) Requested operating mode: DEFECTIVE Event occurred in the standby CPU in rack 1 Internal error, Incoming event Regards, naga AttachmentDiagnosis_.zip (213 Downloads) |
4/21/2009 5:37 PM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating: (308) |
I don't know how to help you. When all LEDs flash, according to manual it means defective CPU. Please check these threads, /tf/WW/en/Posts/17865 /tf/WW/en/Posts/5363 /tf/WW/en/Posts/27801 I recommend to consult A&D support and get ready for firmware reloading. AttachmentDEFECT.pdf (236 Downloads) |
4/21/2009 11:32 PM | |
Joined: 8/25/2005 Last visit: 7/5/2024 Posts: 1161 Rating: (110) |
Hello naga, found a newer firmware at the Product Support. Maybe it will solve your problem. Operating System Updates for CPU412-3H / CPU414-4H / CPU414-4H PG / CPU417-4H Good luck Sabine |
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