1/28/2020 1:14 PM | |
Joined: 3/3/2012 Last visit: 5/24/2024 Posts: 10 Rating:
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We are using 15 nos. of 6ES7 417-4XT05-0AB0 CPUs in our plant. Currently we are facing issue regarding CPU STOP LED continuously blinking after some time (approx. 5 minutes) all LEDs start blinking. we have tried following activities - still problem persists 1. Memory Reset As per S7-400 Automation System, CPU Specifications Manual, 08/2010, A5E00850746-09 page 33, Topic 2.4.2 Running a memory reset 2. Factory Reset As per S7-400 Automation System, CPU Specifications Manual, 08/2010, A5E00850746-09 page 58, 3.4 Resetting the CPU to the factory state 3. Firmware update to version 5.3.5 - through 32 MB flash memory card - As CPU is not accessible through any other communication method. (TCP/IP OR MPI) AttachmentCPU 417-4_AD.zip (236 Downloads) |
1/28/2020 1:48 PM | |
Joined: 9/27/2006 Last visit: 9/4/2024 Posts: 12282 Rating:
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Hello Poison; You are right that a blinking STOP LED signifies either a request for memory reset, on an ongoing reset. And All LEDs blinking signifies memory corruption if some kind. https://support.industry.siemens.com/cs/us/en/view/53385241 Your video shows no memory maintenance batteries in your power supply module, and no memory card (RAM or Flash EPROM) in the CPU's memory card slot. Could this be the source of the problem with the memory corruption detected? Are all of the other CPUs in your plant configured in this fashion? Hope this helps, Daniel Chartier |
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