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CPU226 RTC Values Zero

7/31/2024 7:41 AM	Rate (0)
Shebi87 Bronze Member Joined: 10/22/2011 Last visit: 11/16/2024 Posts: 299 Rating: (1)	Hello Everyone, I have a new CPU226. I am trying to use RTC. when I read RTC, it shows all values zero and if I set RTC then it remains unchanged and all values of RTC are zero. Any suggestions Please Thanks

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7/31/2024 11:32 AM	Rate (0)
Hank88 Joined: 7/10/2024 Last visit: 11/14/2024 Posts: 54 Rating: (7)	Hello Shebi87!! First, I would check the configuration of the RTD or thermocouple module. Both have switches to indicate the type of sensor the module will read. See the S7-200 manual: https://support.industry.siemens.com/cs/us/en/view/1109582 on page 441 you will find the position of the DILs for the thermocouples and on page 445 for the RTD module. There you can also see how the wiring is done
	If you found this post helpul, I'd greatly appreciate your feedback. Your thoughts make a difference. Thanks for the support.
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7/31/2024 11:40 AM	Rate (0)
Shebi87 Bronze Member Joined: 10/22/2011 Last visit: 11/16/2024 Posts: 299 Rating: (1)	Hello sorry but my problem is related to RTC (Real Time Clock) Not RTD

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8/2/2024 6:22 AM	Rate (0)
Hank88 Joined: 7/10/2024 Last visit: 11/14/2024 Posts: 54 Rating: (7)	Sorry for the misunderstanding, In the same manual on page 92 and following is the information regarding the RTC. Here you can find some possible cause of the zero value. In addition, I also advise you to check the wiring of the modules as sometimes they can also produce these problems.
	If you found this post helpul, I'd greatly appreciate your feedback. Your thoughts make a difference. Thanks for the support.
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