4/28/2014 3:37 PM | |
Posts: 22 Rating:
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Dear All, I found problem that all LEDs are blinking at STDBY S7 417 4H CPU suddenly at site. I have checked some of the following things, 1. Power off and Unrack Stdby Cpu. 2. Removed memory card RAM 4MB and returned it back. 3. Remove interface Sync modules out and checked But Master CPU is running healthy, all LEDs are blinking at stdby CPU side where as RUN LED and STOP LED are blinking alternately. Even with laptop, Stdby Cpu is not communicated. Please find the attached Diagnostics buffer. Could anyone pls help me out form this. Its urgent. AttachmentCPU_Laststate.pdf (851 Downloads) |
4/28/2014 9:17 PM | |
Joined: 1/28/2009 Last visit: 8/26/2024 Posts: 6846 Rating:
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Hello, It is getting a very very Frequent Question and we are still waiting for an official guideline for encountering/resolving such cases.I suggest the easiest way to send the faulty CPU to repair shop to check but prior to that do the following checks:
I have checked the buffer of your CPU , but note if both CPU were working in the redundant mode, the moment of redundancy loss in buffer of the intact CPU explains the cause of failure of faulty CPU(it is not available in your case).Try again by putting the faulty in STOP mode after power cycle and read the buffer. Best regards, Hamid Hosseini |
4/29/2014 5:07 AM | |
Joined: 11/26/2011 Last visit: 6/29/2023 Posts: 508 Rating:
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First try to put the standby CPU in stop mode. Then try to communicate with the standby cpu. |
5/13/2014 1:53 PM | |
Joined: 9/7/2007 Last visit: 8/30/2023 Posts: 550 Rating:
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Hivikkipro This happened occasionally, in some cases a firmware update fix the problem but normally it is replaced by a new one. |
Best Regards |
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5/17/2014 7:37 AM | |
Joined: 10/20/2009 Last visit: 4/3/2017 Posts: 215 Rating:
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hi Saggy, Please go link below, where you get PCS7 info tool to get all information of your installed PC. Also you can have a look at procedure: https://support.automation.siemens.com/CN/llisapi.dll/32107024?func=ll&objId=32107024&objAction=csView&nodeid0=10805045&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=CN&load=content |
Regards, |
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5/17/2014 7:57 AM | |
Joined: 11/8/2011 Last visit: 8/21/2024 Posts: 387 Rating:
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Hi RJ I am using STep7 v5.5 for CPU412-3h but whether PCS info toll will work |
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