Hi all,
I'm assembling a headless data acquisition system for a range of mixed signals (RS232, CAN bus, AI, DI). I have an inertial navigation system that transmits at very high baud rates (up to 2Mbaud).
I wrote a simple serial polling VI that streams the raw binary data to disk and is able to keep up with the 2Mbaud rate with no issue. I tested it on my windows PC, using an FTDI USB/RS-232 adapter through NI-VISA. Works fine.
Moving to the cRIO, I see that the RS-232 port on the 9045 supports up to 115.2k. I also see that the FTDI device shows up in MAX if I plug it into the USB 2 port on the cRIO chassis. However, it's still limiting my max baud rate to 115.2k. Anything higher, and NI-VISA throws an error stating that the "configuration value is not allowed" (or something like that).
Can I get around that 115.2k ceiling? I can get away with cutting my baud rate to 1M, but not lower than that. I know the FTDI device isn't the bottleneck, as it functions on my PC without issue. Is it possible that I need to install a specific linux driver to utilize the higher speed?