AzeoTech Posted October 2, 2008 Share Posted October 2, 2008 From the direct emails: I am trying to get a file to log every half hour (1800s) I have a Logging component called TEST. The file needs to log on the exact half hour so 15:00, 15:30. 16:00, 16:30 etc. I have tried the below piece of code which does nothing. while (1) // set the logging file name to "My_File" plus the date/time Logging.Test.strFileName = FormatDateTime("My_File_%y%m%d.csv",SysTime()) // wait until next half hour waituntil(floor(SysTime() / 1800) * 1800 + 1800) endwhile the below piece of code while (1) // set the logging file name to "My_File" plus the date/time Logging.Test.strFileName = FormatDateTime("My_File_%y%m%d.csv",SysTime()) // wait until next hour waituntil(floor(SysTime() / 3600) * 3600 + 3600) endwhile Works and logs the file every hour on the hour And the below piece of code works and logs the file evey hour on the half hour (15:30, 16:30 etc) while (1) // set the logging file name to "My_File" plus the date/time Logging.Test.strFileName = FormatDateTime("My_File_%y%m%d.csv",SysTime()) // wait until next hour waituntil(floor(SysTime() / 3600) * 3600 + 3600) // wait until next half hour waituntil(floor(SysTime() / 3600) * 3600 + 1800) endwhile Am I on the right tracks or miles off? I Link to comment Share on other sites More sharing options...
AzeoTech Posted October 2, 2008 Author Share Posted October 2, 2008 I find it easier not to use waituntil in this way. Instead, calculated the next logging time once, and increment it by 30 minutes each time: private nexttime = floor(systime()/1800) * 1800 + 1800 // calc next half hour point while (1) waituntil(nexttime) .. do whatever you want at the half hour nexttime += 1800 endwhile Also, you don't have anything in your code to actually do the log. It appears all you do is change the file name. But with only %y%m%d in the format specifier, you are only changing the year, month and day, so even though you are trying to do it 48 times in a day, the value only changes once a day. Did you perhaps want a beginexport() in there? Link to comment Share on other sites More sharing options...
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