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cpu 315-2DP only SF and BF LED Flashing.

Created by: mohit at: 9/7/2009 1:59 AM (10 Replies)

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9/7/2009 1:59 AM	Rate (0)
mohit Posts: 89 Rating: (1)	Dear Sir, cpu 315-2DP only SF and BF LED Flashing. continously what may be the problem.Please tell me rhe all LED Blinking Means.
mohit Posts: 89 Rating: (1)
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9/7/2009 8:34 AM	Rate (0)
umencho Diamond Member Joined: 3/21/2006 Last visit: 12/30/2024 Posts: 10230 Rating: (1181)	Hi mohit, You could start with Diagnostic buffer... Regards

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9/7/2009 9:05 AM	Rate (0)
Arunakat1 Posts: 217 Rating: (52)	Hello, Probably you may be having a bus fault (BF) because of that SF also lit. First check your hardware configurations if every thing is matching with physical configuration, check your profi bus (Specially the termination of the bus connectors). And check your slaves are in online. It will be easy using diagnostic buffer as UMENCHO mentioned. Best regards,
Arunakat1 Posts: 217 Rating: (52)
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9/7/2009 9:12 AM	Rate (0)
Aret Posts: 2348 Rating: (265)	I didnt see SF flashing. BF flashing means bus failure. That may mean something wrong with the bus (wrong transmission rate e.t.c). Also this behaviour appeares if you configured CPU as slave and there is no exchange with master. After first exchange is done it should stop flashing in this case. So i would ask you to upload your network configuration also....
Aret Posts: 2348 Rating: (265)
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4/6/2011 2:17 PM	Rate (0)
stein12 Posts: 1 Rating: (0)	Hi, im having the same problem but i dont know how to start diagnistic buffer?? please help
stein12 Posts: 1 Rating: (0)
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4/6/2011 2:27 PM	Rate (0)
Wizard Diamond Expert Joined: 4/24/2006 Last visit: 12/20/2024 Posts: 8786 Rating: (1172)	Dear stein12, When you go to hardware configuration, go online and double click on CPU. Go to tab Diagnostics Or you can use CTRL-D when you are online Best regards, Wizard

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4/6/2011 8:05 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 12/13/2024 Posts: 5697 Rating: (715)	Attached picture shows what Wizard told, make sure you are online. best regards, Marcjan Attachment diag.JPG (1550 Downloads)
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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2/19/2012 9:37 PM	Rate (0)
Daddymac Posts: 1 Rating: (0)	Hey guys i'm really new to siemens. however i have this same flashing bus fault and have run the diagnostics buffer. It is telling me that there is an I/O error with OB122, at adress 35. how do i tell physically which module this is? The suggested corrective action is to physically replace this module.
Daddymac Posts: 1 Rating: (0)
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2/19/2012 11:34 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (999)	Daddymac Hey guys i'm really new to siemens. however i have this same flashing bus fault and have run the diagnostics buffer. It is telling me that there is an I/O error with OB122, at adress 35. how do i tell physically which module this is? The suggested corrective action is to physically replace this module. Daddymac ... at adress 35...
IBN-Service Posts: 8946 Rating: (999)
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5/25/2017 8:00 AM	Rate (0)
akhilkallingal Member Joined: 11/7/2016 Last visit: 8/30/2022 Posts: 1 Rating: (0)	Dear sir, Same problem is happening in my one of site. i am attaching online diagnostic buffer. kindly give me a solution to solve the issue. one main station (S7 315 2dp) and 9 ET200 remote stations. Attachment diagnostic buffer.jpeg (877 Downloads)

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