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RTC of 1212C DC/DC/DC

11/19/2014 1:31 PM	Rate (1)
List Posts: 664 Rating: (18)	Hi, I am working with 1212C DC/DC/DC Plc. My problem is,while i am setting System time with WR_SYS_T its writing the Actual time to the PLC,after power off then on,this RTC is gone factory reset value ... !! How its happening? I need PLC time [RTC] for an application which calculate the power off time of Machine... Is it able to set PLC time through TI Protal permanently..??? Thanks,
List Posts: 664 Rating: (18)
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This contribution was helpful to 1 thankful Users RKBIS

11/19/2014 3:05 PM	Rate (1)
0_Einstein Grandmaster-Expert Joined: 7/7/2010 Last visit: 1/14/2026 Posts: 16365 Rating: (2522)	List Hi, I am working with 1212C DC/DC/DC Plc. My problem is,while i am setting System time with WR_SYS_T its writing the Actual time to the PLC,after power off then on,this RTC is gone factory reset value ... !! How its happening? I need PLC time [RTC] for an application which calculate the power off time of Machine... Is it able to set PLC time through TI Protal permanently..??? Thanks, You might consider adding a signal board battery backup like this one: https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=6ES72970AX300XA0&caller=view
	science guy
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This contribution was helpful to 1 thankful Users RKBIS

11/19/2014 4:51 PM	Rate (1)
William_B Posts: 5225 Rating: (1204)	@huggy_d1: Hi friend - hope you are doing well. I hope you can help with these related questions: * Is it really a requirement to have the battery there to have the clock run? * Is there any indication on how long the PLC is off before there is a issue like this? * Does some of the KTP panels have a built-in battery to keep time better? It will be good to hear from you. w
William_B Posts: 5225 Rating: (1204)
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This contribution was helpful to 2 thankful Users RKBIS eciglar

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