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RTC of 1212C DC/DC/DC

Created by: List at: 11/19/2014 1:31 PM (2 Replies)

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11/19/2014 1:31 PM	Rate (1)
List Silver Member Joined: 12/16/2011 Last visit: 5/14/2019 Posts: 663 Rating: (16)	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,
	"I have not failed. I’ve just found 10,000 ways that won’t work" - Edison
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11/19/2014 3:05 PM	Rate (1)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 12/6/2019 Posts: 8266 Rating: (1397)	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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11/19/2014 4:51 PM	Rate (1)
William_B Posts: 5225 Rating: (1068)	@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: (1068)
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