5/9/2020 6:33 PM | |
Joined: 9/27/2006 Last visit: 10/12/2024 Posts: 12287 Rating: (2685)
|
Hellol Lkmn...; You can use the table in following document to determine what your redundancy status is on your S7-400H system: https://support.industry.siemens.com/cs/ww/en/view/11312956 An active REDF with green IFM1F sand IFM2F LEDs indicates an I/O redundancy error. Check the S7-400H manual for details: https://support.industry.siemens.com/cs/ww/en/view/82478488 However, the reasons you have an EXTF LEDs (external fault) could be linked to the same I/O redundancy error, they would be found in the messages logged in the Diagnostic Buffer of each of the CPUs. Open the diagnostic buffers on each CPU, check for errors on Profibus or Profinet I/O. Use the Save AS.. button on each diagnostic buffer screen to save the messages to text files you can attach here, that way we can read them and help you understand the messages, if you need it. Hope this helps, Daniel Chartier |
This contribution was helpful to1 thankful Users |
5/10/2020 7:05 AM | |
Posts: 35 Rating: (0) |
Thank You so much for your information But, after checking the above steps the Secondary CPU is still in same condition and there are lot of error message in diagnostic buffer. I have attached the pdf Kindly help incase of any update AttachmentModule Information_CPU_Rack 1.pdf (435 Downloads) |
5/10/2020 7:24 AM | |
Posts: 35 Rating: (0) |
Hello dchartier, I have observed, there is MAINT led lit on for some time and again gone within minute and same is logged in diagnostic information attached The information says: Event 6 of 120: Event ID 16# 3842 Module OK Module type: IF module Input address: 8177 Alarm in rack 1 Requested OB: Diagnostic interrupt OB (OB82) OB not found, or disabled, or cannot be started in the in the current operating mode External error, Outgoing event 09:14:54.836 AM 05/10/2020 (Coding: 16# 3842 FE52 D154 1FF1 0007 0000) Event 7 of 120: Event ID 16# 3942 Module problem or maintenance necessary Module type: IF module Input address: 8177 Maintenance demanded Alarm in rack 1 Requested OB: Diagnostic interrupt OB (OB82) OB not found, or disabled, or cannot be started in the in the current operating mode External error, Incoming event 09:13:22.830 AM 05/10/2020 (Coding: 16# 3942 FE52 D154 1FF1 0007 8000) With reference to above information, I am not sure the module is faulty or not because, the error came for some time and again gone So, does this indicate module is faulty ? Pls help... AttachmentModule Information_IF.pdf (372 Downloads) |
Follow us on