Timing

[Charles.m]

Hi NI family

what is the most effective way to alternate between two or more states in a state machine based on time. I would like to record data in one state , after 5 minutes log the data and after 10hrs or so run a pump,  valve , etc.

Thank you

[srikrishnaNF]

Hi Charles.m,

   You can use Time Elapsed VI  with Reset after elapsing time to true to switch from one state to another based on timing.

Thanks and regards,

SrikrishnaNF

SrikrishnaNF

[Charles.m]

If i am correct that works if you have two states. How about when you have multiple states that have to execute at different times without conflict using the same timer.

[smercurio_fc]

You can still use the Elapsed Time. Just set the Auto Reset to false. Compare the elapsed time to see if it's a multiple of your required time for that specific state. For example, for the "log" event, see if the elapsed time is at least a multiple of 5 minutes. Instead of the Elapsed Time you could also just use the Tick Count. The difference is that with the Elapsed Time you'll get seconds as a float, whereas with the Tick Count you'll get msec as an integer.

[Charles.m]

Here is what i have  so far.