Thanks for your responses. I have tried the above but have not had any luck.
I viewed forum.duet3d.com/topic/33314/6xd-external-driver-error-signal-handling which correlates to the issue that I'm having. I had an idea that a workaround would be using an I/O pin as an interrupt.
Is there another way that I can get the event handling to work using this error pin?
I am tempted to use a paperclip to trigger the pin while I'm still developing my config just for testing purposes but I don't want to damage my board. If the error pin is looking for a pin state, then would bridging to 5v or gnd trigger it?