Sorry I meant mode 1 (there is no mode 0)
This is pretty odd. I can't duplicate this here. I tested by putting a couple LEDs on the
PWM/DIR lines and in output mode 2 the PWM output changes from the PWM pin to
the DIR pin when the PWM value is negative. In addition, the LED brightness was proportional
to the absolute PWM value as expected.
Its especially odd since the PWM module is unchanged since it s original creation (version 0)
and PWM output mode 2 is used on some of our interface cards (7I48,7I49)
What LinuxCNC version?