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Time and date synchronizing with S7-200 and TP170micro

3/26/2009 7:41 PM	Rate (0)
Anthony Perrone Regular Member Joined: 3/26/2009 Last visit: 4/24/2025 Posts: 14 Rating: (0)	Hi I am having a problem with the time and date sychronization programming. I added the SM0.0 NO contact and the READ_RTC with VB0 going to T and it is causing all kinds of issues throughout the rest of the program. I get the correct time and date shown on my touch panel but other parts of the program are getting thrown off.When I put a NC contact before the time sync programming the problems go away. If I put the READ_RTC in any of the sub routines it doesnt work on the touch panel and it still messes up the program. Any ideas?

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3/27/2009 9:30 AM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 1/9/2026 Posts: 9104 Rating: (1202)	Dear AP26, Please have a look at this link: http://support.automation.siemens.com/WW/view/en/19323674 Pay attention: when you read clock, you assign VB0. This means that you use 8 byte (VB0 to VB8) (they can not be used in programm!!!) Best regards, Wizard

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3/27/2009 3:30 PM	Rate (0)
Anthony Perrone Regular Member Joined: 3/26/2009 Last visit: 4/24/2025 Posts: 14 Rating: (0)	Thanks Wizard for you help. I figured out the issue. I had tags that went too VW(0-8) I didnt realize VB would write to VW. I am new to Siemens programming so I still have a lot to figure out.

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3/27/2009 4:32 PM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 1/9/2026 Posts: 9104 Rating: (1202)	You are welcome, I hope you will enjoy Siemens. Best regards, Wizard

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