PMW signal mesa 7I76

Hi all,

I have a question: is it possible to get a PMW signal with different duty-cycle and waveform on a 7I76 MESA card?

Thank you.
 

The step/dir outputs on a 7I76 are just 5V buffers so can output PWM
if desired (using firmware that replaces a stepgen with a PWMgen)

Hi, I also want this feature. Don't understand "using firmware...".
Can it be implement in a .ngc program so i can use the program in the toolchanging operation. If possible, can you show how the program looks like?

Thanks,

Standard 7I76 firmware has 5 hardware step generators.
If you don't need all 5 Axis of motion you can install firmware on the
FPGA card that has say 4 Step generators and one PWM
generator, typically brought out on the 7I76s 5th axis step/dir pins

In 7i76e, i think there are 6 step/dir outputs for the drives, but i used up 5 for the 5 axis. I want to preserve the remaining one, as in case i need it in future. Instead, somehow, i intent to write a .ngc program to achieve the outputting a simple and rough pwm duty cycle, is it possible? but:..
>there are no time interrupt feature and goto function for use in Linuxcnc programming as what are in arduino and C language, aren't there ?
>the G4 dwell time limits to 1 second at minimum, isn't it, can i write
0.05 second in it?

You can use LinuxCNCs software PWM component running at the servo
thread rate to generate PWM if you don't need high resolution or a high
base frequency.

man pwmgen