Solution
The flyback diodes on a PXI-2567 neither can nor need to be configured. They are internal to the card and are set in parallel with each channel’s circuitry to protect the card’s channels, regardless of whether the power source is internal or external to the card. The
PXI-2567 Channel Diagram section in the PXI-2567 User Manual shows a flyback Zener diode in each channel.