loops, timers and errors

[Baji]

Use this timer, u wont miss the events.

[Tzench]

Ravens Fan: Is this an ordinairy case structure? I don't recognize the green frame.

[Tzench]

Ravens Fan: No need to reply, I figured this one out myself 🙂

[Tzench]

Baji:

About the "First Misstake". If I insert the instrument as you describe I get stuck in an infinite loop, as the program will never read anything. Occasionally I will get a warning saying that there might be more bytes at port than I requested to read.

[Tzench]

I hav made a new version of getstring.vi. It checks for errors, but it still gets stuck in the second loop, despite getting an 'Á', indicating EOF.

I have put the indicator withthe read string inside the case structure. Is this the right thing to do?

[Tzench]

Baji: I can't open timer.vi. I use LabVIEW 8.5.

[Baji]

Timer Vi in 8.5

[Baji]

First check the available bytes in the port, Read the port if available bytes are more than zero (Implement this using the functions - Bytes at port,Greater than zero and a cade structure).Dont read the port if no bytes are available.

[Tzench]

I thought the function you inserted were supposed to do that. Do I need to change it further?

The timer.vi is still in 8.6.

[Tzench]

I think I figured this one out. Connecting the numeric wire from Bytes at Port to the VISA read function seems clever, but that makes it incompatible with getstring. The way getstring works it is supposed to only read one character at a time, looking for EOF, which it won't find, since it keeps getting larger chunks of text, hence infinite loop.

I include new version of serial port control.