Configuring Part Cooling Fan
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I have my part cooling fan plugged into PWM Fan2. I have added an M106 P2 to my config.g. I currently use Cura 2.1.3 for slicing and in the cooling settings I have cooling enabled and have regular and maximum speeds set to 100%. I have regular fan speed height at a value of .7mm entered. I also have regular fan speed at layer set to 3. Regardless, when I start a print the fan is on. I want it off for 1st 3 layers…...... Advise.
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M106 P2 Snnn , where nnn is 0 to 255 or 0 to 1.0 control what speed the fan is set to, not what fan is allocated to print cooling.
Most slicers do not yet support having multiple separate print cooling fans so they simply send M106 Snnn, rather than allowing the choice of which fan is allocated to which hotend.
To solve this, specify the fan that is associated with that hotend using the too definition in config.g:
M563 P0 D0 H1 F2 ; tool 0 uses extruder 0,heater 1 and fan 2After this whenever tool 0 is selected, sending M106 Snnn will control fan 2.
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Updated the tool definition section of the wiki to include allocating fans to tools:
https://duet3d.com/wiki/Configuring_RepRapFirmware_for_a_Cartesian_printer#Tool_definition_sectionAnd the Fan section to mention this is
https://duet3d.com/wiki/Connecting_and_configuring_fans -
Thanks T3P3 Tony. Yes, I already have my hotend fan configured with the M106 P1 T45 H1. Anyway I've already figured it out. Thanks again.
