Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

OK, let's hope that Andy or somebody else chimes in as I would like to get this 'comp' working and also learning how to do this.

Tnx Rod I have no need for this but your posts do help a lot as you put comments in as to explain what is going on.
I find this very helpful with my hal leaning experience.

rodw wrote: Sorry but I don't really understand spindles as my plasma cutter does not have one. I suspect that the pin that needs to be connected instead of these setp commands.
setp hm2_7i76e.0.7i76.0.0.spinout-scalemax 2400
setp hm2_7i76e.0.7i76.0.0.spinout-maxlim 2500

The spindle analogue output scale values can not be linked, they are parameters rather than pins.

I am not 100% sure what is required here, but I am assuming that the intention is that LinuxCNC sends the right motor speed to get the required spindle speed.

You could set the scalemax and maxlim to the actual motor speed. Or scale it from 0 to 100% or from 0 to 1.

The best approach probably depends on where the spindle speed feedback is from, is it from a spindle encoder, a motor encoder or from the VFD?

It is possible that the custom component output only needs to connect to the pid.s.ff0

(Having a closed-loop spindle-speed configuration does slightly complicate things, the feedback might need scaling too)

As I said, I don't know anything about spindles. Maybe this component should return something else than spindle maximum speed. Maybe it should only be used to update the GUI with the gear selection parameters.

It seems that the requirement to use a parameter to set maximum spindle speed is not designed with a gearbox in mind.

andypugh wrote:
I am not 100% sure what is required here, but I am assuming that the intention is that LinuxCNC sends the right motor speed to get the required spindle speed.

You could set the scalemax and maxlim to the actual motor speed. Or scale it from 0 to 100% or from 0 to 1.

The best approach probably depends on where the spindle speed feedback is from, is it from a spindle encoder, a motor encoder or from the VFD?

It is possible that the custom component output only needs to connect to the pid.s.ff0

(Having a closed-loop spindle-speed configuration does slightly complicate things, the feedback might need scaling too)