Automated GC triggering from reactor

Hello Friends,
I need desperate help in labview programming of my reactor and GC system.
I have a labview controlled reactor with temperature, pressure and flow parameters.
Also i have hardware in place to trigger the GC from RS 232 interface.
What i need to do, is to trigger the GC from labview when the specified process values achieved for temperature, pressure and flow.
And to count the number of triggers happened. And after given triggers it moves to the next setpoint for those parameters.
and then it continues.
e.g. I have setpoints for temperature like 200, 230, 250
then it should trigger the GC lets say 4 times for 200C and send signal to heater for next value which is 230 and once process value reaches 230 the same sequence again.
Its like giving programmed setpoints for specified triggers.
All the help will be highly appreciated !
Thanks in advance
regards
Atul

Atul,
Here is an example built from the Design Pattern for a state machine.  It can give you some ideas about how this could work.  For a real program connected to an instrument and a process heater, I would do a more elaborate program with added user interaction and safety features, probably based on the Producer/Consumer (Events) Design Pattern.
Lynn
Attachments:
StateMachineStates 1.ctl ‏5 KB
StandardStateMachine 1.vi ‏28 KB

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