Prints with Input Shaper profile sim to have IS disabled in gcode? (M593)
Hi,
I looked at the Gcode of a couple of prints using the IS profile and in the only lines that use M593, The frequency value is F is set to 0, which should disable IS for that axis.
M593 X T2 F0 M593 Y T2 F0
From https://help.prusa3d.com/article/input-shaper-mk4-xl-mini-_451816:
FrequencyF - Set the input shaper frequency. If axes (X, Y, etc.) are not specified, set it for all axes. The default value is 0Hz, which means that the input shaper is disabled.
The profile is definitely the one with Input Shaper enabled:
; printer_settings_id = Original Prusa MK4 Input Shaper 0.4 nozzle
Is there anything I need to do to do actually enable the feature?
Thanks,
Teo
RE: Prints with Input Shaper profile sim to have IS disabled in gcode? (M593)
I noticed the same. The instruction M593 is present only in the End G-Code of the printer profile, to disable IS.
To understand better, I edited the Start G-Code adding
M593 X T2 F50 ; force enable IS M593 Y T2 F40 ; force enable IS
(I copied the frequencies from the screen of the MK4).
Strangely, by printing a benchy with the Speed profile and this change in the G-Code, on the MK4 screen the resonant frequency of the Y axis went from 40Hz to 39Hz. The print came out perfect.
Printing the same model with the Speed profile, without changing the Start G-Code, the print came out equally well, with the same printing time. In this case, on the MK4 screen the Y-axis frequency remained at 40Hz
So, changing the Start G-Code doesn't seem to make any difference, other than the strange value of the Y-axis frequency (39Hz).
I'm on Prusa Slicer 2.7.1, MK4 5.1.2 (IS firmware).