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Synchronize S7-1200 and HMI

Created by: Pablo Alexis at: 11/9/2023 3:46 PM (3 Replies)

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11/9/2023 3:46 PM	Rate (0)
Pablo Alexis Member Joined: 7/29/2021 Last visit: 9/21/2024 Posts: 7 Rating: (2)	Hello, I am trying to synchronize the date and time of an S7-1200 PLC and KTP HMI (both products in simulation mode), and to do so I have followed the guide in the following link: https://support.industry.siemens.com/cs/attachments/69864408/69864408_WinCC_TimeSyn_DOC_v40_en.pdf I have tried mode 1 of the guide, where the HMI is placed as a slave, but it does not work. I've also tried the "area pointer" mode, but I haven't been able to get them to sync either. However, I see that in the guide I work with the "Date_And_Time" variable type, while the S7-1200 only allows me the "DTL" variable. Because of this, I tried to replicate the exercise with an S7-1500 PLC (simulation mode), and the second method (area pointer) did work. The first slave HMI method also did not work. Under these premises, I would like to know: Is there any other way to synchronize the HMI with the S7-1200? Is there a way to use the "Date_And_Time" variable in the S7-1200? I appreciate the time taken. Greetings. Edit: I use TIA Portal and WinCC Advanced V18. Attachment 69864408_WinCC_TimeSyn_DOC_v40_en.pdf (386 Downloads)
	Last edited by: Pablo Alexis at: 11/09/2023 15:52:20 Last edited by: Jen_Moderator at: 11/10/2023 08:44:23 PDF added from link.
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11/13/2023 9:31 AM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 9/3/2025 Posts: 16293 Rating: (1930)	Hello Pablo Alexis to test the time synchronisation is simulation I would say does not work properly. Its because the HMI uses the systemtime of the PC and also the PLC Sim uses some kind of windows time for system/local Time. If you want to test it you would need a hardware PLC. I tested already with HMI simulation and PLC hardware and here the time synch works. (the win time is changed...) but with both simulated... I do not know exactly but I would say it does not work like you expect (Area Pointer Date/Time PLC works also with DTL!!) Bye Murof
	Last edited by: Murof at: 11/13/2023 09:32:40 If this Information really helps, you could use the Rate function
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11/14/2023 11:36 AM	Rate (0)
Pablo Alexis Member Joined: 7/29/2021 Last visit: 9/21/2024 Posts: 7 Rating: (2)	Hello Murof, Thank you for your time in responding. I would like to know if you can tell me the mode you used for synchronization between the physical PLC and the simulated HMI (slave HMI or area pointer). Maybe, if possible, can you give me the program you used for synchronization? Luckily I have an S7 1200 PLC with which I will later test the synchronization with a simulated HMI. On the other hand, I have not been able to get synchronization to work in area pointer mode using DTL variables. Could you give me more scope on how to do this? Since it worked with the Date And time variable (with an S7-1500), but with DTL (with an S7-1200) I couldn't achieve it. Greetings.
	Last edited by: Pablo Alexis at: 11/14/2023 11:42:52
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11/21/2023 12:02 PM	Rate (0)
Murof Platinum Expert Joined: 8/3/2009 Last visit: 9/3/2025 Posts: 16293 Rating: (1930)	Hello Pablo Alexis It depends on the panel type. for a Comfort Panel I would use the slave mode for time synchronisation and a little workaround for the summertimechange: https://support.industry.siemens.com/cs/ww/en/view/69864408 https://support.industry.siemens.com/cs/de/en/view/109482675 if you use a Basic panel then you do not have a summertime change systemfunction, here I would use the area pointer and try to do the synchronisation with local time (not systemtime). Here only the timestamps in the diagnostic view (diag buffer of PLC) is probably an hour behind but the rest should work. the usage of DTL is described in the Help System: https://support.industry.siemens.com/cs/ww/en/view/109813307/74759351819 Bye Murof
	If this Information really helps, you could use the Rate function
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