
HyTechWorks©2013 – V3.1 51
Tick “Watchdog on PWM2” to enable the watchdog function. When Mach3 works
properly, PWM2 output a 50% duty cycle signal. When Mach3 works abnormally,
PWM2 output a 0 duty cycle signal. When watchdog is enabled, PWM2 can’t be
controlled by a M code. As soon as watchdog is enabled, it can’t be disabled until
USB interface’s power is recycled. To disable the watchdog, untick “Watchdog on
PWM2”, exit Mach3, recycle the USB interface’s power and restart Mach3.
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