M303 gcode unclear documentation
-
The M301 also has some issues:
This is the default line from online configurator:
[[language]] M301 H1 S1.00 P10 I0.1 D200 T0.4 W180 B30 ; PID on Hotend (may require further tuning) ```But the T, W and B are not described in the **[Gcode wiki for M301](https://duet3d.com/wiki/G-code#M301:_Set_PID_parameters)** > M301: Set PID parameters > Parameters > Hnnn heater number > Pnnn proportional (Kp) > Innn integral (Ki) > Dnnn derivative (Kd)
-
What online configurator are you using? The online RepRapFirmware configurator at https://configurator.reprapfirmware.org/ does not generate M301 commands.
I have corrected the description of M303.
-
I configured the PID with the M303 command. During operation, the temperature varies according to the SIN funcrion. How to fix? Command does not have PID coefficients (((
-
1. Make sure that you are using the M307 parameters that were established by tuning.
2. If you are, then increase the D (dead time) parameter in the M307 command.
-
What online configurator are you using? The online RepRapFirmware configurator at https://configurator.reprapfirmware.org/ does not generate M301 commands.
I have corrected the description of M303.
It did for me. This is a brand new, this week, config of your configurator for my new xBot.
-
And how to translate M307 parameters in PID parameters for M301?
-
And how to translate M307 parameters in PID parameters for M301?
Don't, let the firmware do it for you. You don't need to use M301.
-
I do not understand how to configure the M307.
For example, I expose 235C, I get 238C. -
I do not understand how to configure the M307.
For example, I expose 235C, I get 238C.Please explain. Are you saying that if you ask for the hot end to heat to 235C then the temperature overshoots to 238C before coming back to 235C?
-
Yes.
At the moment of autotune, the fan has max. At the time of printing, the fan speed is lower. -
3C isn't much overshoot and is unlikely to affect the print significantly. But if you want to reduce it, increase the A parameter in the M307 command for that heater a little. Try increasing it about 2%.