Instrument Control (GPIB, Serial, VISA, IVI)
VISA RS-485
Hi Bong
I'm not Adam but this is a public forum and some advise is needed.
First
If your devices are on the same rs485 cable, do both work when used alone?
You are now opening two serial resources and that only is ok when both are on a different interface.
My guess is that they are on the same cable and use the same resource .
The real difference is in the address in the beginning of the command.
Probably #01and $03
If so you can best combine them by creating a subvi from the writestring to port and read string from port
adding the special translation for the receive.
You then can call these after each other because calling them in parallel makes it impossible to determine which returned data should go to which read.
Furthermore your software looks good for a beginner but try to have as little corners in wires as possible making it even more readable.
And use the normal wait ms function instead of the wait until next ms multiple. You wont get hardware timing anyway and tryin to do all actions at the same multiple is not very efficient for a system. I know it is in all NI examples but that simply is a bad habit in Austin.
I'm not Adam but this is a public forum and some advise is needed.
First
If your devices are on the same rs485 cable, do both work when used alone?
You are now opening two serial resources and that only is ok when both are on a different interface.
My guess is that they are on the same cable and use the same resource .
The real difference is in the address in the beginning of the command.
Probably #01and $03
If so you can best combine them by creating a subvi from the writestring to port and read string from port
adding the special translation for the receive.
You then can call these after each other because calling them in parallel makes it impossible to determine which returned data should go to which read.
Furthermore your software looks good for a beginner but try to have as little corners in wires as possible making it even more readable.
And use the normal wait ms function instead of the wait until next ms multiple. You wont get hardware timing anyway and tryin to do all actions at the same multiple is not very efficient for a system. I know it is in all NI examples but that simply is a bad habit in Austin.
