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I'm pretty stumped on this one.

Investigating an issue I was having with an OctoPrint plugin, I've come to realize my M503 command is reporting duplicate and empty values. This is not an issue with the plugin, but an issue with the native M503 output.

Here's what I'm getting:

echo:  G21    ; Units in mm (mm)
echo:  M149 C ; Units in Celsius

echo:; Filament settings: Disabled
echo:  M200 S0 D1.75

echo:; Steps per unit:
echo: M92 X80.00 Y80.00 Z400.00 E93.00

echo:; Maximum feedrates (units/s):
echo:  M203 X200.00 Y200.00 Z5.00 E Y1000.00 Z100.00 E5000.00

echo:; Acceleration (units/s2): P<print_accel> R<retract_accel> T<travel_accel>
echo:  M204 P500.00 R500.00 T500.00

echo:; Advanced: B<min_segment_time_us> S<min_feedrate> T<min_travel_feedrate> J<junc_dev>
echo:  M205 B20000.00 S0.00 T0.00 J0.08

echo:; Home offset:
echo:  M206 X0.00 Y0.00 Z0.00

echo:; Material heatup parameters:
echo:  M145 S0 H185.00 B45.00 F255
echo:  M145 S1 H240.00 B110.00 F255

echo:; PID settings:
echo:  M301 P21.73 I1.54 D76.55

; Controller Fan
echo:  M710 S255 I0 A1 D60 ; (100% 0%)

echo:; Stepper driver current:
echo:  M906 X580 Y580 Z580
echo:  M906 T0 E650

echo:; Driver stepping mode:
echo:  M569 S1 X Y Z
echo:  M569 S1 T0 E

echo:; Linear Advance:
echo:  M900 K0.00

echo:; Filament load/unload lengths:
echo:  M603 L350.00 U400.00

This is the problem:

echo:; Maximum feedrates (units/s):
echo:  M203 X200.00 Y200.00 Z5.00 E Y1000.00 Z100.00 E5000.00

Why would my feedrate be reporting an empty "E", an additional "E5000" and then two of each "X" and "Z" arguments as well? At first, I thought maybe it was a duplicate Z-Y-Z-E followed by another.. but it's followed by Y-Z-E only.

My printer specs:

  • Ender-3 Pro
  • SKR Mini 2.0
  • Micro Swiss hot end
  • Direct drive extruder
  • Marlin build is straight from the BigTreeTech repo

Thank you in advance for any help.

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  • $\begingroup$ Do you get the same if you just send M203? Also to be clear this is not causing a issue directly that you know of correct? $\endgroup$
    – Kezat
    Sep 8 at 18:12

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