Retrofitting a 1986 Maho MH400E

No, the mode should make no difference
Is this with a blinking green light on the 7I84 (and no red light)?

I guess tomorrow I'm going to rewire the IO pins from the 7i84 to the 7i77 and create a wiring file. Since I have a 7i73 I won't need the pins for the panel that Mark used if I decide to connect the Philips keyboard and pendant. It's better to get to servo tuning and actual milling, even at 100€ this board isn't worth troubleshooting for 2 days in my situation. Though I'm bummed about this, it retailed for 100€ or thereabouts. Were I in a hobby situation you can bet I'd diagnose the everloving beejeezus out of this card.

PCW, yes, there's a blinking green light when LCNC is fired up. That's partly what makes it confusing to me.

The question I was asking is if there is a blinking green light when you did the output test,
since you need constant communications for the test to work.
(this is why your halcmd loadrtx xx example would not work without adding
a bunch more commands that set up threads etc)

Yes, I repeated the test with LCNC on and all the cards communicating with each other. It made no difference unfortunately.

OK sounds like the 7i84 is truly bad/broken. We can issue a RMA to repair/replace the card but inexpensive shipping will take a while