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Timer problems

Created by: Daniel..Nilsson at: 8/1/2008 9:36 AM (2 Replies)

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8/1/2008 9:36 AM	Rate (0)
Daniel..Nilsson Posts: 32 Rating: (0)	Hi, I have a problem with the limit of the timers in Step7. I want to have a timer that can handle times up to 24 hours. Is it possible?
Daniel..Nilsson Posts: 32 Rating: (0)
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8/1/2008 10:37 AM	Rate (1)
Aret Posts: 2348 Rating: (265)	Using "pure" timers - no. But you can: 0) Read time with SFC1 and evaluate time difference withFC"SB_DT_DT"(from standartlibrary) 1) Use OB1x 2) Use OB3x + counter (like DINT counter, that counts every second. if counter >= 246060 ...) 3) Use timer for 1 hour + counter to store this hours 4) Use OB20-23 tomakeinterruptaftersomedelay(Timeformatpermits24hoursforsure)
Aret Posts: 2348 Rating: (265)
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8/1/2008 4:55 PM	Rate (0)
Denilson Pegaia Diamond Member Joined: 9/23/2005 Last visit: 1/12/2026 Posts: 4444 Rating: (1487)	Hi, Take a look athttp://support.automation.siemens.com/WW/view/en/26116927 ;there are a timer by FB that run over a large range.
	Denilson Pegaia Siemens Industry Sector Technical Support
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