silyavski,

I think in the end it comes down to how you use the machine and personal preference. I looked at lots of commercial panels to see what could be useful and ended up after many different options with the panel above.

The VFD will be inside the cabinet so I can't see the screen. I've not been able to find a long extension cable to detach the panel and put it on the door. Any links to one welcome!

Although there is control for VFD on/off, it is also under Mach3 control for on/off so it is just a manual override option.
I thought about Mach3 spindle speed control and in the end just went for the manual pot direct to the VFD. I tend to cut the same things at the same speed. It would be very easy to get Mach to also control the speed and then wire the pot to the Pokey system if I change my mind. Keeping it simple for now.

My buttons are laid out in order of running sequence left to right. Power on, then e-stop reset to energise the relays, then switch on lights and pumps if required, then start the spindle and set the speed, then run the cycle, with a feedrate override tuning dial right at the end.

I have a seperate MPG pendant so no need to add controls on the panel.

That's my version anyway . . .