Emco 240 Tool Turret

timmert wrote:

I use a mesa 5i25/7i76, don't know if it has enough inputs?

Yes, the 7i76 has 32 input. That should be plenty for even a very complex lathe. And you can add up to 48 more on the serial expansion port on the 7i76. And then up to 384 more on the spare header on the 5i25.

But the sensors for turret position is done before
wiki.linuxcnc.org/cgi-bin/wiki.pl?Contri...oolchanger_component

That looks like it might work, though the description says "Gray code" and I thought that your truth table looked like straight binary.
However, that is a detail. Using the built-in "carousel" HAL component might be easier through software upgrades, but it needs a bit more HAL effort to make it work. (only very slightly).

This is the information I found inside the motor cover
And the 2 speed wiring diagram.

OK, that's useful, and presumably the relays to make all that happen still exist in the control box? Do you have the required 3-phase supply?

Can you see what type of relay is used to control the ATC motor? (whether it is small enough to be driven directly by the 7i76 GPIO, or whether intermediate relays are needed)

So, do the 6 wires at the bottom of the picture go to the 6 terminals on the motor, and the three terminals at the top go to a relay controlled by the motion controller? (or direct to the motion controller). In either case yo should be able to leave everything just as it is, and control the board and motor from LinuxCNC.

It's your machine.

I told you not to use a stepper...

You could run the stepper motor in velocity mode, that way it doesn't matter if it slips.