How to comminicate between two NI 9871?

[masterwho]

Hello, I am now using two cRIO 9205 and each of them has a NI 9871 on it. I built a cable to connect the two port 1 from each card togrthet ( GND ~ GND, TXD+ ~ RTS+, TXD- ~ RTS~). I am trying to send binary files from one card to the other to test how fast the card can be.

Could I ask that how can I make the two cards communicate? I don't know how to write the Labview program.

Thank you very much!!

[Mark_SAI]

Hi there,

I don't think your crossover cable is wired correctly, please see this link for details on crossover cable wiring

This module will have to be programmed in FPGA mode, luckily there is a shipping example. Go to the example finder (Help > Find Examples...) and search for '9871' on the Search Tab. You will then see 'NI-987x Serial Loopback' which is an example project with code that achieves your aim.

If you are new to cRIO programming then I recommend NI's RT and FPGA course, see here for details