Mach3 Mill.... Motors not turning.

[junior85]

Hi,

I have built a 3 axis routing system and trying to get Mach3 to run the steppers.

Well the electronics part is also custom made. I am using a controller AT89S52
(8051 architecture) with 11.0592 Mhz crystal giving the ref frequency. The microcontroller is linke to a driver circuit built around a Sanyo chip (STK6713BMK4). The ckt is in good shape and the code for the Controller very simply done in Assembly.

The problem is I configured Mach3 once .( Ports n Pins, Motor Tuning, Active Highs n Lows) once and tried it out . The system worked fine. I left in running condition overnight and the next day when i tried running it again.... the motors wont move at alll. There locked into position as soon as I power up and hit reset, but wont rotate.

An electronics guy said that the Kernel frequency (25KHz) is a bit too high for the controller i am using.....

Anybody with ideas or suggestions..
pls Help

[ger21]

Originally Posted by junior85 An electronics guy said that the Kernel frequency (25KHz) is a bit too high for the controller i am using.....

I don't think that's your problem. 25Khz is the maximum Mach3 is capable of. It only sends steps as fast as you tell it to.

[junior85]

thx ger
what wud u suggest in this situation.... i am out of ideas.

[djctek]

just a shot in the dark but you could try adjusting the step pulse under motor tuning and setup, if it is set to 0 change it to 5 or something, I had the same problem when I built my CNC and that fixed it. Also look at the settings of the ESTOP override under ports and pins setup, I had a problem with that too. Also had to put in a PCI adapter because the standard motherboard ports would not output enough power to the controller. Hope this helps and good luck.