opened 09:25PM - 05 Jan 22 UTC
Firmware: Snapmaker 2.0
thread for context https://forum.snapmaker.com/t/confused-on-settings-after-exec…uting-m502/23293/3
summary:
I have A350, i upgraded the rails and head, firmwares auto updated, i noted that the numbers in M501 were different, assumed that was right because of upgraded rails and head.
I have been having odd printing issues (severe under extrusion on first layer) and i am struggling to know what changed because i have replace rails, head, hotend, filament batch, updated all my slicers, etc) so trying to go back a little.
I have put the old head back on, i reset from touchscreen and reset using M502. I am confused by output of M502 because its seems to have reverted to the old rails settings…
Before resetting with M502
```
Recv: echo:Steps per unit:
Recv: echo: M92 X160.00 Y160.00 Z400.00 B888.89 E228.18
Recv: echo:Maximum feedrates (units/s):
Recv: echo: M203 X300.00 Y300.00 Z12.00 E120.00
Recv: echo:Maximum Acceleration (units/s2):
Recv: echo: M201 X1000.00 Y1000.00 Z1000.00 E1000.00
```
after resetting with M502
```
Recv: echo:Steps per unit:
Recv: echo: M92 X400.00 Y400.00 Z400.00 B888.89 E212.21
Recv: echo:Maximum feedrates (units/s):
Recv: echo: M203 X120.00 Y120.00 Z40.00 E25.00
Recv: echo:Maximum Acceleration (units/s2):
Recv: echo: M201 X3000.00 Y3000.00 Z100.00 E10000.00
(i expected E212.21 as thats what a factory reset always did)
the other numbers are confusing me… my suspicion is M502 just did the wrong thing…
```
i am seriously not impressed with your culture of development and testing, you are flying fast and loose and continue to introduce issues that can potentially be catastrophic to the physical machine.
You need to do better.