Tester and Handler, RS232 communication with event structure

[≡D♠W♂]

All, Good day.

I need help to design a suitable framework for my labview application structure.

My case as below; currently I have a system that consists 2 different system, one system is using for handle the test (using Labview 8.6)and another system is using for handle the automation movement (using other language). Test system is the slave and Handler is the master.

Therefore, we suggest to use the RS232 as the communication for there 2 systems.

Test is always waiting the job signal from handler.

-->In this case, what is the best framework I can use to design in Tester system?

and before Handler assign a job, it will send a SYSTEMREADY string to Tester, and expecting Tester return SYSTEMOK or SYSTEMBUSY, if receive string is SYSTEMOK, then Handler will assign a job. After a job complete, Test will send the PASS/FAIL result to handler.

Thanks in advance.

[KateB]

Try state machine: http://zone.ni.com/devzone/cda/tut/p/id/3024