The M412 S0 code not working

[Graf_Spee]

the filament runout code is not working.
all I get is this

I want to turn it off as my sensor is not working

M412 s1
echo:Filament runout ON
M412 s0
echo:Filament runout ON
and a capital “S” just gives me this
M412 S0
ok
M412 S1
ok

so a case sensitive “S” is not the problem

[Mxbrnr]

The case sensitive “S” actually is the problem, you are just expecting a readout when there is none.
Using a lowercase “s” is the same as not using it at all and the machine is reading that as a plain M412 command, so that is only giving you the status report. You have to use the capital “S” to actually change the status. When you do use the capital “S,” it does not automatically report the status change, so you then need to run a plain M412 command to check it. Your commands need to look like this:

You will see this with most other G-code commands as well; changing a parameter and requesting the status of that parameter are two separate commands with separate responses.

[Graf_Spee]

this stuff was copy pasted from the console so I don’t know what to tell you other than it can’t be the it

M412 s1
echo:Filament runout ON
M412 s0
echo:Filament runout ON
M412 S0
ok
M412 S1
ok

[Graf_Spee]

here is some screen shots for proof

[xchrisd]

It’s case sensitive, this means it has to be written BIG (like BIG).
Are you showing a bug or don’t you know how it’s working?

As @Mxbrnr wrote, use
M412 to get the status.
M412 S0 to turn it off.
Check the status again with M412

Did you read through Mxbrnr’s post?

[Mxbrnr]

I just told you why: all commands MUST be capitalized. Do it EXACTLY as my previous screenshot shows and it will work.

Here is YOUR screenshot annotated for what you did wrong:

• #1. Lowercase “m” is not allowed, and therefor not recognized; the machine does nothing.
• #2 thru 8. Lowercase “s” is not allowed and therefore not recognized; the machine only sees the M412 by itself and reports the status of the switch.
• #9. Same as #1.
• #10. WE HAVE A WINNER! This command is written correctly and tells the machine to turn off the switch. The machine responds with “ok” to acknowledge that the command is recognized and implemented. It DOES NOT report the new status of the switch at this time, and this is considered normal behavior for Marlin/Snapmaker firmware. You need to then run the M412 command by itself again to get the status report so you can verify that the switch is off.