3532
« on: June 12, 2016, 02:14:21 AM »
If it helps, I will attempt to explain the circuit’s requirements…
1. This pin is taken TTL(H) and TTL(L) in accordance with the pre-set Mach3 PWM (spindle speed) output signal.
2. This pin gates the laser ON and OFF and is controlled by the M10P1/M11P1 commands. The laser will only be on when this pin is at TTL(L).
3. This pin is signal Ground (GND).
4. This pin requires a weak pull-up to +5Volts (to provide the necessary Vcc for the opto-transistor) and this is generally already provided within the laser PSU’s (Active Low) trigger input. This pin actually switches the laser ON and OFF
Tweakie.