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CPU 315F-2PN/DP

2/25/2013 9:32 PM	Rate (0)
Ali28 Posts: 2 Rating: (0)	Hello, I was wondering if some one has encounter this issue before? I have a CPU315F-2PN/DP, the project has PLC blocks and WinCC screens. I have downloaded the Project in WinCC to a Mobile panle 277, but I only see the project for 10 to 14 seconds, and thenproject disapears, then I get a window saying "Transfer, connecting to host". I cancled this "transfer" window, have rebuilt the project, and downloaded again, but same thing has happened. Your help is apprecited if you know what is going on? Thanks Ali Dehkordi
Ali28 Posts: 2 Rating: (0)
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2/26/2013 9:16 AM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, Try with a reset to factory settings: How do you do an operating system update (OS update) on operator panels? Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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2/26/2013 7:11 PM	Rate (0)
Ali28 Posts: 2 Rating: (0)	Hello, Thanks for the help, I updated the OS, but same thing happened. I also noticed as soon as the HMI project disapears, a message pops up saying : "Please wait until Run time system is terminated", then it goes to "transfer, connecting to host" window. As mentioned, I also have a safety PLC,I did not have all the blocks downloadedwhen HMI project was disapearing. I could not download all the blocks because I could not have a successful compile of PLC project, and then PLC went to STOP mode.When PLC went to STOP mode, my HMI project did not disapear anymore. Checking the diagnotics Buffer on PLC, it seemed that there is a programming error,and it was looking for OB121. I created OB121 (empty) in the blocks, downloaded to PLC, now it is in RUN mode, and it seems fine. Thanks, Ali28
Ali28 Posts: 2 Rating: (0)
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2/26/2013 7:21 PM	Rate (0)
umencho Grandmaster-Expert Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating: (1183)	Yes, now is clear. In case CPU goes in STOP the panel lost communication with host (CPU). It might be useful - http://support.automation.siemens.com/WW/view/en/33118312 You must fix the error which was the reason for CPU going in STOP. Downloading the OB121 just keep the CPU in RUN. Take a look in Diagnostic Buffer to understand what is wrong there in order to fix it. We can help you of course in case. Best regards, Hristo Mihalev

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This contribution was helpful to 1 thankful Users Marcjan