@jimakron said in Trouble firing 45 watt TTL Laser on "output6_buff" PMW:
We are NOT ABLE to fire the laser using the 'output6.buff" pin on the Duet 3 mini 5+when we wire to the IN pin on the MYJG5W.
The ... 'IN' pin is a analog 0-5vdc analog PMW signal.M452 C"!out6" R255 S0 F3000 ; enable Laser mode, on out6 (F3000)
Have you got a link to the manual for the Cloudray MYJG50W PSU? The product page is quite vague, https://www.cloudraylaser.com/products/cloudray-50w-co2-myjg-series-power-supply-black-shell-myjg-50w
As far as I can tell 'H' and 'L' are on/off (L being H inverted) inputs. The 'IN' pin is said to support "input 0V to 5V analog signal, can also input PWM signal" (there's no such thing as an "analog PWM" signal). By 'analog signal', it means a signal of 0 to 5V, usually controlled by a potentiometer. The Mini 5+ output6.buff doesn't supply an analogue signal, only a 5V PWM signal.
I can't find any information on the PWM frequency that the Cloudray MYJG50W accepts, but it's possible that F3000 in the M452 command is too high. The firmware default is 500Hz (F500), have you tied that?
Ian