Hi, Bill
Try referring to the manual, It's under Support above.
Her's a Link,
http://www.machsupport.com/docs/Mach3Mill_1.84.pdf" **** 5.2.2 Defining engine frequency
The Mach3 driver can work at a frequency of 25,000 Hz (pulses per second), 35,000 Hz or
45,000 Hz depending on the speed of your processor and other loads placed on it when
running Mach3.
The frequency you need depends on the maximum pulse rate you need to drive any axis at
its top speed. 25,000 Hz will probably be suitable for stepper motor systems. With a 10
micro-step driver like a Gecko 201, you will get around 750 RPM from a standard 1.8o
stepper motor. High pulse rates are needed for servo drives that have high resolution shaft
encoders on the motor. Further details are given in the section on motor tuning.
Computers with a 1 GHz clock speed will almost certainly run at 35,000 Hz so you can
choose this if you need a higher step rate (e.g. if you have very fine pitch lead screws).
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The demonstration version will only run at 25,000 Hz. In addition if Mach3 is forcibly
closed then on re-start it will automatically revert to 25,000 Hz operation.
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The actual
frequency in the running system is displayed on the standard Diagnostics screen.
Don't forget to click the Apply button before proceeding. ***** "
Hard to read your mind, Way to go, Your Cat, Tell's it All.
Good Luck, Chip