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Problems with CPU 928B

Created by: Chinaglia at: 4/22/2010 4:41 PM (9 Replies)

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4/22/2010 4:41 PM	Rate (0)
Chinaglia Posts: 2 Rating: (0)	I have a cpu 928B, which connect to the DB's energy disappear, leaving only the FB and PB's. What may be happening, because I checked the program in finding errors.
Chinaglia Posts: 2 Rating: (0)
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4/22/2010 8:05 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (1000)	Chinaglia I have a cpu 928B, which connect to the DB's energy disappear, leaving only the FB and PB's. What may be happening, because I checked the program in finding errors. Do you run with RAM or EEPROM?
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4/22/2010 9:30 PM	Rate (0)
Chinaglia Posts: 2 Rating: (0)	The PLC is running in RAM
Chinaglia Posts: 2 Rating: (0)
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4/24/2010 5:19 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (1000)	If the battery is OK, no data will be lost. If the battery is NOT OK, also FB and PB will disappear after power loss. There is a small chance, that the DB is loaded into the CPU DB-RAM and the CPU DB-RAM is defective. Or the DB will be erased inside ofthe start-up OB (OB20,21,22), but that would be a little bit strange....
IBN-Service Posts: 8946 Rating: (1000)
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4/27/2010 5:32 PM	Rate (0)
fabrica Posts: 5 Rating: (0)	Thanks for the feedback I have already been exchanged, battery, CPU with a new, rack, and the source of the rack, still remains the problem. While this presents a problem ZYK the LED flashes quickly, and standing with PG BStack of the screen indicates "cycle time exceeded", which may be a bug in the programming cycle time on the restart, but where can I check this time cycle? Att
fabrica Posts: 5 Rating: (0)
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4/27/2010 5:34 PM	Rate (0)
legacy support Gold Member Joined: 7/15/2008 Last visit: 3/13/2025 Posts: 382 Rating: (44)	fabrica I have a CPU 928B, that by turning off the power for a few minutes and connect the DB's are gone, leaving only FB and PB. What could be happening, I've checked the program but have not found what might be causing this_ Hello fabrica Have you looked at your Istack/Bstack info to narrow down your problem??. It could also be the 135Rack that causes your CPU to stop, like a Fan Fault. Regards

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4/27/2010 7:14 PM	Rate (0)
fabrica Posts: 5 Rating: (0)	Thanks for the feedback After the restart, the LED blinks Zyk, and BSTACK indicates "CYCLE Time Exceeded." So back to work when the entire memory clean and empty the program again. Back to work normally.
fabrica Posts: 5 Rating: (0)
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4/28/2010 8:31 AM	Rate (0)
IBN-Service Posts: 8946 Rating: (1000)	BTW, why you are using two different names and two different threads for the same problem? (/tf/WW/en/Posts/42909) By mistake?
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4/30/2010 8:37 PM	Rate (0)
fabrica Posts: 5 Rating: (0)	I'm having two different names because one of them had problems, but thanks for asking me. But this problem CPU928B this are already happening for some time and already checked the whole program but can not find where this fail to be able to remedy. Only happens when I turn on and turn off the power, where the DB disappear. grateful
fabrica Posts: 5 Rating: (0)
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4/30/2010 11:26 PM	Rate (0)
legacy support Gold Member Joined: 7/15/2008 Last visit: 3/13/2025 Posts: 382 Rating: (44)	fabrica I'm having two different names because one of them had problems, but thanks for asking me. But this problem CPU928B this are already happening for some time and already checked the whole program but can not find where this fail to be able to remedy. Only happens when I turn on and turn off the power, where the DB disappear. grateful Hello Fabrica I looked at all the other replies to this post, Fabrica, would you mind uploading your S5 Project Files??? Regards / m.f.g

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