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Program that runs on alternate days

Created by: Larry Sifers at: 1/3/2013 4:40 PM (5 Replies)

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1/3/2013 4:40 PM	Rate (0)
Larry Sifers Member Joined: 7/25/2011 Last visit: 9/10/2014 Posts: 4 Rating: (0)	I am trying to create a program that runs on alternate days. For example it runs on Monday, Wednesday, Friday, Sunday, Tuesday, Thursday and Saturday. Then it would repeat and run again on Monday. I know that the days are numbered 1(Sunday) to 7(Saturday). How would I go about having this program execute on alternate days? Do I need to use an array with a pointer that is indexed each time the program runs? If possible please provide a code example to get me started. Thank you.

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1/3/2013 5:27 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/24/2025 Posts: 15558 Rating: (2468)	If you have an FB/FC that runs at midnight, then does something like this: ----- day := day + 1; if day > 14 then day := 1; end_if; ----- Now you have a value to check against in a case statement or something like that: caseday of 1,3,5,7,9,11,13: ; call your fb for odd day ; 2,4,6,8,10,12,14: ; call your fb for even day ; end_case; ---- This is not flawless but should give you some idea how to accomplish your goal.
	science guy
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1/3/2013 6:12 PM	Rate (0)
billwest Posts: 510 Rating: (120)	I don't know much about what you are trying to do other than you want to run different programs on alternating days. One approach is to create a block. In the block you would store the current day or date. Depending on which you stored, you would thencompare the current day or date to the current DTL in the 1200.When it was not equal, you could toggle a bit. If it was on, turn it off. If it was off, turn it on. You would also save the new Date or Day.You can use the bit and a conditional jump to execute the portion of the program you want. I have attached a note on Time as an integer. Starting on Page 10 is the portion on the 1200. You can use this to extract either the day or date. Good Luck billwest Attachment D:\tmp\App Note -Time as an integer.pdf (407 Downloads)
billwest Posts: 510 Rating: (120)	Last edited by: CS Moderator at: 1/3/2013 11:52 PM Attachment reattached
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1/3/2013 6:31 PM	Rate (0)
Larry Sifers Member Joined: 7/25/2011 Last visit: 9/10/2014 Posts: 4 Rating: (0)	Both good ideas and starting points. Thanks for the help.

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1/3/2013 8:35 PM	Rate (0)
Larry Sifers Member Joined: 7/25/2011 Last visit: 9/10/2014 Posts: 4 Rating: (0)	I solved it! I used a toggle bit that is triggered by the midnight hour. My operations will execute for one day and then be idle for the next 24 hours. See attached. Attachment D:\tmp\Alternate Day Toggle Bit.JPG (364 Downloads)
	Last edited by: CS Moderator at: 1/3/2013 11:53 PM Attachment reattached
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This contribution was helpful to 2 thankful Users billwest 0_Einstein

1/6/2013 11:21 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 1/22/2025 Posts: 162 Rating: (5)	I'm no expert, but doesn't the code seem a little to complicated for its cause? Why do you use Hours combined with minutes and seconds? and on the second row why use two m2.5 flags? If I understand you right you want to make an code run every second day and last the whole day? Ifs so, you could use a memory like "int" and some math (add, sub) to calculate when it shall be executed. If you have the int to start at 2 and make the following code hour=0------day=int-----------------------(S(m0.0) hour=23-----min=59----sec=59--------(R(m0.0) m0.0(P)-------ADD2 to int int=8------move1 to INT (to make the friday count accurate) int=9------move2 to INT (to make the saturday count accurate) The code is untested but it just something that came to my mind, the m0.0 flag will (hopefully) be active every second day for 24hrs.
	Last edited by: rQx at: 1/6/2013 11:22 PM
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