I was really hoping that someone who was using this software and the 5410A+ would have chimed in.
I think you're probably using the wrong driver version, or it's not compatible with your firmware version.
I had to modify the ET5410A+ definition to work with my ET5420A+.
Anyway, in the working definition, there is no Mode button. Everything is done from the Setup button. Which is odd, and probably not how HKJ would prefer it's done (especially since Mode should be locked out during logging).
Anyway, see the attached screenshot. I set the Mode, then set the current, and then I set Input to On, and it works as expected- as you can see on the Current values tab in the background.
I might add the ET5410A+ to my modified definition as an alternative and release it here when I have some time. If I do that though, I might want to correct the way it works. We'll see.
Thanks,
Josh