Need help created state machine that is time based

I need help with my labview program. My goal is to write a program that allows the user to turn a toggle button on/off. When they do this it will start a loop witch turns on a digital switch for 45 minutes then off for 30 seconds and on and on till the user toggles the switch off. The timing does not have to be precise. I am using the NI 9476 digital output card.
I have written the code to turn the switch on/off. I know need to add the looped fuction for on 45 minutes/off 30 seconds. I assume the most efficient method would be using a state machine, but I was having trouble figuring it out.
Attached is the program I have written thus far without the loops.
Thanks,
Barrett
Solved!
Go to Solution.
Attachments:
Test Setup X01.vi ‏16 KB

I cannot see your code since I don't have 2010 installed. A state machine would be good approach but in order to allow the user to cancel and possibly abort the process at any time your state machine should have a state such as "Check for timeout". In teh loop containing the state machine use a shift register to pass the desired delay value and the start time time for that particular delay. Once the user starts the process set the delay time to your desired time (45 minutes expressed as seconds) and have another shift register that contains the next state to go to after the delay completes. Use a small delay (100ms to 500ms depending on how accurate you want your times to be) to prevent your state machine from free running and then check the delay again. Use the current time and compare it to the start time. If the desired time has passed then go to the next state. You can store the next state in a shift register. No do the same thing for your Off Time state.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot
Attachments:
Simple Delay in State Machine.vi ‏14 KB

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Need help created state machine with timed digital output

Hello everyone I'm new in LabView especially about how to make a state machine. I want to make simulation about state machine with digital output. In Front Panel there are volt_in as an input slider (0-10 V), two numeric control (upper limit and bottom limit), a waveform chart to plot those 3 value, and three boolean (P0.0, P0.1, P0.2) as an indicator. Boolean indicator will on if input from slider exceed the limit in certain situation. This simulation will work as follow:
1. Define the upper & bottom limit (ex. 8 & 4V)
2. Make an input from slider (0-10V)
3. If input (2) exceed the upper limit but less than 10 second (ex. you have 9V input for 8 second, but after 8 second you change the slider back to normal between 4-8V) then the boolean indicator P0.0 & P0.2 will stay off
4. If input (2) exceed the upper limit more than 10 second (ex. you have 9V input for 4 second, change to 8.5 V for 3 second, and then change to 10V for 3 second) then the boolean indicator P0.0 will turn on for 5 second, turn off, then follow by indicator P0.2 for 5 second, and turn off
5. Wait 15 second, then repeat process from (2)
Same process for input that exceed the bottom limit (P0.1 and P0.2 as indicator).
Can you help me make the block diagram of this process? I will appreciate any of your help.
Best Regards
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Attachments:
State Machine Digital Output.vi ‏28 KB

I would highly recommend you to open the template in LabVIEW to design state machines. You can the Standard State Machine template if you go to File -> New.. and Browse to VI -> From Template -> Frameworks -> Design Patterns.
Also, here is a good explanation of one:
https://decibel.ni.com/content/groups/northeast-oh-labview-users/blog/2009/09/08/state-machines
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B4: =SUMIF(Truck 1 :: $3:$3,B$1,Truck 1 :: $12:$12)+SUMIF(Truck 2 :: $3:$3,B$1,Truck 2 :: $12:$12)
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2) What folder structure should I use? Since I am not a professional photographer, I won't be shooting projects. I think something date or event driven would be best (preferably both).
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IMO it is not good to import camera-to-Aperture (or direct to any app other than the Finder). Best is to use a card reader and use the Finder to copy images from the camera card to a folder on the computer hard drive.
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Drawexample.vi ‏24 KB

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Need help created state machine that is time based

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