Config tool: wrong paramater for thermostatically controlled fan

Leav

Again, please let me know if there is a better place to post this.
This could be a bug in the firmware, but I think the firmware is functioning correctly and it's just a misunderstanding/bug in the config tool.

In the configurator, when limiting the fan speed in a thermostatically controlled fan, the output is incorrect:

Actual output - S0.25 (This does not control or limit the fan speed) :

; Fans
M950 F0 C"fan0" Q500                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0.25 H1 T45                           ; set fan 0 value. Thermostatic control is turned on

Correct output - X0.25 (this does limit the fan speed) :

; Fans
M950 F0 C"fan0" Q500                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 X0.25 H1 T45                           ; set fan 0 value. Thermostatic control is turned on

Phaedrux

I thick your expectation of what the config tool should be providing is accurate to what it is actually providing. In other words, I believe it's always used speed % as the S parameter and not the X parameter. It's just not advanced enough to setup more complex configurations like that.

The config tool is asking what speed do you want the fan to come on at, nothing more.

Leav

@Phaedrux said in Config tool: wrong paramater for thermostatically controlled fan:

The config tool is asking what speed do you want the fan to come on at, nothing more.

Perhaps I am misunderstanding, but when E0 reaches 45 degrees, it turns it on at 100%, not 25%.

I think the S parameter sets the instantaneous speed when sending an M106 command, but is ignored when the fan is thermostatically controlled (my experience at least, may be wrong)