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s7-1200 - LED Test or defective CPU Firmware

Created by: baihui at: 10/28/2016 8:44 AM (17 Replies)

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10/28/2016 8:44 AM	Rate (0)
baihui Posts: 10 Rating: (0)	Is it possible to fry the S7 if one applyes power to some of it inputs without providing power supply to the PLC and selecting sink/source input? The PLC starts up, I get STOP/RUN flashing in yellow with ERROR and MAINT flashing. After some time, they stop flashing and it goes in STOP mode. The PLC is not visible in the TIA portal. When I go to Online and Diagnostics in the Online Status information it says my PC is connected to the PLC, but it has a /!\ mark beside it and its not shown in the accesible devices list.
baihui Posts: 10 Rating: (0)	Last edited by: baihui at: 10/28/2016 8:58:31 AM Last edited by: baihui at: 10/28/2016 9:48:19 AM
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10/28/2016 1:38 PM	Rate (0)
Duris_I Diamond Member Joined: 4/28/2015 Last visit: 11/27/2025 Posts: 10970 Rating: (843)	Hello, hard to say, but probably I see one advantage, you have connection with PLC, so why not try System Reset of PLC? Hope you have backups of course.
	With best regards... Ivan Duris Flight: OMICO
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10/28/2016 3:03 PM	Rate (0)
baihui Posts: 10 Rating: (0)	I cant master reset the PLC. It basically wont communicate with the CPU. Although I managed to assign it an IP, I cant ping it. I can flash it LEDs. Attachment Capture4.PNG (637 Downloads)
baihui Posts: 10 Rating: (0)	Last edited by: baihui at: 10/28/2016 3:03:47 PM
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10/28/2016 3:04 PM	Rate (0)
baihui Posts: 10 Rating: (0)	Attachment Capture3.PNG (688 Downloads)
baihui Posts: 10 Rating: (0)
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10/28/2016 3:10 PM	Rate (0)
Duris_I Diamond Member Joined: 4/28/2015 Last visit: 11/27/2025 Posts: 10970 Rating: (843)	Hello, monitor also this topic: TIA V13 CPU Not Supported Message
	With best regards... Ivan Duris Flight: OMICO
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11/2/2016 7:39 AM	Rate (0)
baihui Posts: 10 Rating: (0)	One of my colleagues had TIA Portal V14, so we managed to run the PLC with it. Only thing is I cant make the clock outputs run, they are all FALSE, but I will keep digging.
baihui Posts: 10 Rating: (0)
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11/2/2016 8:03 AM	Rate (0)
mopS04 Posts: 5521 Rating: (1058)	baihui One of my colleagues had TIA Portal V14, so we managed to run the PLC with it. Only thing is I cant make the clock outputs run, they are all FALSE, but I will keep digging. hi baihui, If you want us to help on this, some more information are required. How could anyone have an idea about this problem, when you doesn´t write what you are doing to get it run? regards,
mopS04 Posts: 5521 Rating: (1058)
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11/2/2016 8:38 AM	Rate (0)
baihui Posts: 10 Rating: (0)	I had some troubles connecting to the PLC and it was stuck in stop mode. Using S7 Tool I managed to assign an IP to the PLC. Then I was able to flash its LED, but its CPU was unknown, although its flash version showed up - v4.1. I contacted 1 of the people im working with, he had TIA V14, and with that software we connected to the PLC with no problems whatsoever. We got Internal error 46 yesterday, but after restarting the PLC power supply the error disappeared. We tried to make some outputs blink, just to be sure everything is ok, but we couldnt do that (Also Im not sure if Im not doing something wrong). Except for that everything else seems to be ok. Attachment a.jpg (646 Downloads)
baihui Posts: 10 Rating: (0)
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11/2/2016 9:08 AM	Rate (0)
Duris_I Diamond Member Joined: 4/28/2015 Last visit: 11/27/2025 Posts: 10970 Rating: (843)	Hello, sry but still needed info is missing. Simply if you can connect also with TIA v14, why you didsn't look to what type of PLC TIA v14 shows? This can be right and important info. From this info you can jump to next...
	With best regards... Ivan Duris Flight: OMICO
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11/2/2016 12:03 PM	Rate (0)
Nico T Advanced Member Joined: 12/4/2012 Last visit: 10/28/2025 Posts: 3 Rating: (0)	Check under Device configuration -> System and clock memory if the memory bits are linked correct to your M bits. Then make sure you download hardware configuration to CPU.

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