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Count time (ms) in SCL

4/7/2010 11:23 AM	Rate (0)
sund Posts: 5 Rating: (0)	Hi I want to count milliseconds in my program. I want to create a function that starts a stopwatch that counts milliseconds. The next function should stop the counter and return the value of milliseconds. It should be called something like this. StartTime(TERT_time_positioning); //Starts the stopwatch/counter Timepos := StopTime(TERT_time_positioning) //Stops the stopwatch and returns the value of ms since started. I hope somebody could help me with this Regards Sund
sund Posts: 5 Rating: (0)
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4/7/2010 9:12 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, I would read the system clock, at start time and stop time (using built-in SFC for system clock). Than just take the diffrence between both read DT values. This function is also available in the library.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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4/9/2010 9:26 AM	Rate (0)
sund Posts: 5 Rating: (0)	Thank you very much for your reply. I found a SFC that I can use. Thanks again Regards Sund
sund Posts: 5 Rating: (0)
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10/23/2013 4:05 PM	Rate (0)
Osman_ Bronze Member Joined: 12/11/2009 Last visit: 9/8/2022 Posts: 243 Rating: (4)	sund I found a SFC that I can use. you found but I'm still searching!

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10/23/2013 4:14 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 8/31/2025 Posts: 6874 Rating: (1368)	Osman_ sund I found a SFC that I can use. you found but I'm still searching! Hello, You may need to connsult the STEP 7 online manual for using SFC1.You can capture the date and time of CPU at any given moment, store it in memory.Again capture another value and see the difference in TIME format. Best regards, Hamid Hosseini
	Demo Channel on Youtube
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This contribution was helpful to 1 thankful Users Osman_

10/23/2013 5:47 PM	Rate (0)
Osman_ Bronze Member Joined: 12/11/2009 Last visit: 9/8/2022 Posts: 243 Rating: (4)	hdhosseini yes I read cpu time with sfc1 before. it's also possible to make timecounter or stopwatch with "clock memory" but i thought maybe there is a FB or SFC... you just put input trigger and output StopWatch time. I solved problem with clockmemory. thanks for message.

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