Is there a way to output power in line before the M11P1 to change the power for the hole program, been doing this on all sizes of CO2 laser
I want to change power for diffent materials. Thanks for any help. What works tile will not work on woods.

There are a number of different ways of controlling laser power which will vary dependant on the actual motion controller being used.
One method I have used which will operate with any motion controller is described here;  https://www.machsupport.com/forum/index.php?topic=12444.msg265104#msg265104

Hope this helps,

Tweakie.