Please help if you can.
If mach software receive the encoder and limit switches signals. What is the function of the driver?
Is it to control the position of motor ?
And the software handle the error .

The mach is a stepper based system - the last time I checked, they did not support servos.

The "driver" is a device that takes the low power/voltage signals from the computer and interfaces it to a high/higher powered "real world".

You might want to download the mach instruction manual/information from their website.

Mach supports step and direction controllers. These are available for stepper motors as well as DC brush type servo motors. As long as the drive accepts step and direction signals it should work.

When I contacted Mach recently (within 3-4 months) to see if I could retrofit it to my servo controlled mill, they indicated that they couldn't support a servo...

Maybe things have changed....

Mach outputs step and direction signals. If your drives accept them, they'll work. Any servo drives that accept step and direction signals have always worked with Mach.

Mach does not read the servos encoders. The encoder signals go back to the drive, which closes the loop.

Digital servo controllers are fairly recent introductions. Older, conventional servo controlled CNC machines, like the old Boss 5 Bridgeport, used anolog controllers. I think the controllers read the encoder positions and did the PID control then outputted anolog 0-10V signals to the drivers, which more or less just amplified the signal to run the servo.

Your servo motors are probably older , as described above, and can not be driven by modern digital controllers.

In other words, you have to start from scratch, and replace the motors and the drives. Mach will not run your type of servos is what I think they were trying to tell you.

Feel free to correct me if I'm wrong, but this is how I understand it.

Yes, my servos are "analog" type as are the amps. They are controlled by 0-10v signals which MACH couldn't interface with....

It was really nice to have spent $1300 to repair some obsolete servos that I could/should have replaced with some new items from Ajax CNC for my Bridgeport. Sadly, didn't have the extra funds to make the switch.

Maybe next time the fund$ will be in better shape to do a proper upgrade....

Rutex makes a step/direction to 0-10V board for $100

dear islambadr

its nice to meet you

http://www.cadmagazine.com/phorums/viewforum.php?f=20&sid=7c5b79ac0870c9dc007a89a2c584525f

Another option is the Skyko pixie p100.