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CPU 115 U GOES TO STOP MODE

Created by: almostafa at: 6/9/2008 4:17 PM (2 Replies)

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6/9/2008 4:17 PM	Rate (0)
almostafa Posts: 22 Rating: (1)	Dear friends Our system is built aroubd S5 Cpu 6ES 943 - 7UB21 . some times CPU goes to srop mode , i have to reload the program from EPROM to restart work . Attached is the status of ISTACK Please can you tell me this Trip because of exeternal or internal fault . Mustafa Attachment CPU 943 Istack.jpg (375 Downloads)
almostafa Posts: 22 Rating: (1)
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6/9/2008 4:32 PM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 10/3/2024 Posts: 8744 Rating: (1168)	Hi mustafa, Here is a link to manual: http://support.automation.siemens.com/WW/view/en/1085937 Please look at chapter 5. Best regards, Wizard

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6/9/2008 8:07 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, If you were not transferring programs at the moment of a poweroutage and so on,... SYNFEH is typically an error that you get when your application uses indirect addressing in a wrong way, resulting in headers in the memory to be overwritten. When this happnes, the CPU is not able to rebuilt the bloc list. User program operations TNB, TIR or TDI have overwritten block headers or free memory space.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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