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s7-1200 goes to stop

Created by: malkawi at: 11/19/2013 2:25 PM (5 Replies)

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11/19/2013 2:25 PM	Rate (0)
malkawi Posts: 35 Rating: (0)	hello I have 2 problems: first one is that s7-1200 1214 DC/DC/DC which was working perfectly for the last 2 weeks just stopped, I have little information how and why it happened, all I know is the run/stop signal is red. tomorrow I will be able to troubleshoot it but i'll have very little time, so I hope you can give me a hint where I should look. the 2nd problem is that another s7-1200 1214 dc/dc/dc which was working for few weeks, until I did an update on the ladder diagram only, all hardware configuration were not changed, yet when I did the upload to plc the plc went to stop and I got an error message saying: "internal system error (error code 0xa024ab0001c2ff14) please contact simatic customer support . the same software was uploaded to another plc of same type and it worked well. any idea what happened ?
malkawi Posts: 35 Rating: (0)
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11/19/2013 3:48 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 3/24/2023 Posts: 13203 Rating: (2147)	malkawi hello I have 2 problems: first one is that s7-1200 1214 DC/DC/DC which was working perfectly for the last 2 weeks just stopped, I have little information how and why it happened, all I know is the run/stop signal is red. tomorrow I will be able to troubleshoot it but i'll have very little time, so I hope you can give me a hint where I should look. the 2nd problem is that another s7-1200 1214 dc/dc/dc which was working for few weeks, until I did an update on the ladder diagram only, all hardware configuration were not changed, yet when I did the upload to plc the plc went to stop and I got an error message saying: "internal system error (error code 0xa024ab0001c2ff14) please contact simatic customer support . the same software was uploaded to another plc of same type and it worked well. any idea what happened ? Depending on the firmware of the PLC and the software version used to load it, the answers can be difficult to guess. If you have a newer plc with Firmware 3.0.0, update to the latest available for that plc. Typically my experience is when I get those errors, a power cycle of the plc resets the problem. I have had similar experiences when loading a PLC with changes. In my situation, the plc has an HMI getting data via profinet (MP177 PN), and a PC application using MB/TCP to read/write data constantly at about 50 Hz. I think with all that read/write activity during loading of the plc logic updates, something lost "consistency" and the plc goes into stop mode when that happens. Just a guess but that is what makes sense. If you have V12 SP1 Update 2 and Firmware 3.0.2, you should contact Siemens Support via Support Requestand send them your project for evaluation.. Be sure to send that stop code from the diagnostic buffer.
	science guy
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11/21/2013 8:03 AM	Rate (0)
Ravi Teja Pabolu Posts: 18 Rating: (0)	I to experienced the same . Go to online & diagnostics and clik mres for memory reset ,then downloaad your program . i hope it helps .
Ravi Teja Pabolu Posts: 18 Rating: (0)
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11/21/2013 5:44 PM	Rate (0)
Richard Jupp Advanced Member Joined: 12/1/2005 Last visit: 1/20/2023 Posts: 47 Rating: (0)	Use the factory reset option as this is more successful than the memory reset option. If, like me, you use a PLC for testing different projects you will finddoing this prior to loading a new project will eliminate a lot of this type of issue.
	Last edited by: Richard Jupp at: 11/21/2013 5:46 PM Richard Jupp
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This contribution was helpful to 1 thankful Users LSSchmidt

11/22/2013 12:11 PM	Rate (0)
malkawi Posts: 35 Rating: (0)	Richard Jupp Use the factory reset option as this is more successful than the memory reset option. If, like me, you use a PLC for testing different projects you will finddoing this prior to loading a new project will eliminate a lot of this type of issue. this did the trick, thank you very much
malkawi Posts: 35 Rating: (0)
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10/20/2015 12:06 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4827 Rating: (123)	New question published by michalgd is split to a separate thread with the subject s7-1200 internal system error. How to do factory reset?. Best regards Min_Moderator

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