Spindle Speed Settings only from file, no MDI possible?

What do you mean by: "had no 10V output for spindle supply from the beginning"

Isn't the VFD itself the spindle supply?

Hi langdons! Thanks for your question!
Yes the VFD has more than one output. One +24V for maybe switches or relays, two relay outputs and one +10v output that puts voltage to the electronic potentiometer on the 7i76e. The mesa doesn't have such a voltage output on board, so you have to give that from an external source (eg the VFD 10V out) to the spindle+ input. The spindle-output then gives the 0-10V voltage correspondingly to the set rpms back to the VFD's analog input and, if the FWD signal is on, the spindle turns.
In my case, the rpm output voltage AND the spindle.enable = spindle.on signal is only given out from LCNC if I do this from a file. Normally - and any time before, this works even with any MDI speed command.

So - the VFD (now) works as it should but LCNC has problems to give the right MDI Commands as ordered to the outputs of the MESA card.
The VFD had no +10V on its H output as it came to me, from the dealer, new product, no NOS, freshly produced 3 years ago. I wasn't ready to build that thing in because I was busy with the mechanic part of my CNC. I put some parameters in the first weeks, but no real testing with any controller, so I didn't mention that problem. I found that few weeks ago, as I installed the VFD and tried to get the spindle turning. And found that there is no +10V at Out H. Then, the external 10V source, but I wanted the VFD beeing allright, so I sent it to Hitachi for Service.

I wasn't able to go down to my machine the last days, but I will make a video of that process the next days.

Kind regards!