Internet PLC Forum
General => Technical support => Topic started by: TravisB on March 23, 2012, 03:43:13 PM
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I have some BASIC code which takes action based on the change of day, and month, and year at midnight each day. I'm wondering if there is a way I can run the simulator and advance the date/time to midnight, to the end of the month, and to the end of the year so I can see if all of my actions are occuring as expected.
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The simulator Time/date variables are normally loaded with the time/date of the PC when the simulation is started.
You can change the simulators time/date variables when you have the if you click on the "VIEW" button in them simulator.
Click on the "Edit" button to bring up the "View Variables - Integers" dialog.
If you want to set the simulator time to 23:59:00 you will have to type "TIME[1]=23" and press enter to set the hours to 23.
TIME[2] sets the minutes and TIME[3] accesses the seconds.
DATE[1..4] allows you to change the Year, Month, Day and Day of Week values.
Please be aware that the TIME[] and DATE[] registers can change as your is reading them. If the time is 23:59:59 it is possible for your TBASIC code may read it as 23:59:59 but if you are unlucky you may read the time as 23:59:00. Newer PLC families have addressed this issue with the STATUS(18) mechanism.
You may want to look at some sample code that I shows how to set/clear RELAYS base on the RTC without getting glitches.
http://www.tri-plc.com/trilogi/RTCAppByGDK.zip
Please note that the sample code did not worry about the date. You should take the same precautions with the DATE[] values as I did time the TIME[] values.
Gary D
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For a quicker test you can write a test custom function to set the TIME[n] and DATE[n] to a value several seconds just before the target date and time and then you can observe what happen when the time is up.
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Thanks Gary, and thanks support!
Works wonderfully.