4/27/2016 2:13 PM | |
Joined: 11/29/2011 Last visit: 10/24/2024 Posts: 1360 Rating: (232) |
Hi, The CPU clock should be retentive. See SIMATIC S7-1500 Structure and Use of the CPU Memory under chapter "2.3 Summary of retentive behavior". Anyhow maybe the user program reset your time in the startup OB. |
- What you read here, please check with manuals and your requirements. |
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This contribution was helpful to2 thankful Users |
4/27/2016 2:21 PM | |
Joined: 9/18/2013 Last visit: 2/20/2024 Posts: 203 Rating: (12) |
Hello, This is not normal behavior, you can use Microman post to monitor whether it is reset in the Restart OBs or not, if no You shall start to contact SIEMENS Support |
4/27/2016 3:04 PM | |
Joined: 9/9/2014 Last visit: 7/11/2024 Posts: 246 Rating: (40) |
Thanks for the answer. But, all that relates to the PLC memory, I know all this, and following the guidance of the only full PLC reset (factory reset) will erase the date and time. The PLC program resets the time is not made. Russian support was not able to answer my question, and offered a firmware update it, or send it to them for examination. (Firmware update has not yet been done, but I think not likely to help, send them is not possible because of the absence of spare PLC) I had the assumption that the battery installed inside it, is responsible for the conservation of certain information, such as in older models S7-300 or S7-400 redundant (although in them it is installed for that to save data to a memory card).
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Best Regards |
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This contribution was helpful to1 thankful Users |
4/30/2016 11:18 PM | |
Joined: 9/7/2007 Last visit: 10/9/2024 Posts: 550 Rating: (62) |
Hi Unreality I have checked the manuals and to the best of my knowledge there is no batteries for S7-1500but S7-1200 there is this :
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Best Regards |
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This contribution was helpful to1 thankful Users |
5/1/2016 2:59 PM | |
Joined: 9/9/2014 Last visit: 7/11/2024 Posts: 246 Rating: (40) |
Thanks for all the answers, we sent formal request to the technical support, as the answer will come, I will inform. |
Best Regards |
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