I am working on final project and trying to understand how the serial VISA work. Watching a VI run it looks like the "VISA resource" name kicks off an event chain and the connection between VISA resource out to the next VISA resource in controls the sequence of execution? Or is it just executing them in some kind of sequence?
I could imagine that if I had something broadcasting data, the receiver would get more data and I guess that would kick off the next thing in the sequence. But what if I have a board that you send a poll and it responds?
I guess this is a more generic question. If I were using VHDL on an FPGA, for example, things actually occur in parallel. But clearly the VI is execution one "thing" at a time. What determins the order? I can see how that might work on an indicator. It has no outputs so you start there and work backwards. But that clearly would not work for serial. What am I missing?
Sam
