usb6560 Axis4 - Spindle speed

[AndyUK]

Hi All
Looking for advice please on the above board, in the manual for the above board it references M3, M4, M5, (Spindle) as a newbie to all this. How does it connect to the speed controller for the Spindle?,
Are M3, M4, M5 the connections to the Spindle port that is labelled A, Com, B.? The manual says normally open common normally closed.


Thanks in Advance Dave

Hi Dave,

Welcome to the forum.

M3, M4, M5 are G-Codes, and they instruct the machine to Start the Spindle Clockwise, Anti Clockwise, and Stop respectively. For a hobby CNC, you probably only need to worry about M3 and M5.

The controller you've mentioned, if I'm looking at the right manual (link below), has a relay for the spindle control. When the controller receives an M3 code it will trigger this relay. A should be normally open, B should be normally closed. The COM is the common.

The manual talks about speed control, but doesn't suggest a pin to set it to, so I suspect this is just an "On/Off" for the spindle via this relay.

To help further, we'd need to know more about your spindle and the spindle controller you're using. Photos (once you've got 10 posts under your belt) are always useful.

https://www.cnczone.com/forums/attac.../428470.attach