Error: M551: non-empty string expected

arhi

What's the proper way to set no password as M551 P"" does not work? Just M551 or ?

Phaedrux

M551 Preprap ; Set password. Use reprap for no password prompt.

arhi

@Phaedrux so if I set password to "reprap" it will not ask for password interesting. (RRF3 requires "" after P so M551 P"reprap" ) thanks will try in the morning

bot

In RRF2, simply not setting M551 leaves the DWC unprotected via password prompt. Not sure about RRF3, but that could work perhaps.

arhi

@bot tried, same on RRF3 - no 551 no password

Phaedrux

Not setting M551 explicitly will have it use the default, which is 'reprap'.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M551_Set_Password

All checks out.

arhi

@Phaedrux hm I commented out the 551 line and dwc is not asking for password

Phaedrux

@arhi Right. Because when you haven't set it, it's still taking the default value of reprap, which won't ask for a password.

arhi

@Phaedrux hahhaha I'm not very smart these days, all clear now

Phaedrux

It can be a bit confusing because many gcode have assumed defaults, so even if you don't send the command the firmware is already assuming some values are set. A good example is M584 for motor driver assignment.

arhi

@Phaedrux said in Error: M551: non-empty string expected:

It can be a bit confusing because many gcode have assumed defaults, so even if you don't send the command the firmware is already assuming some values are set. A good example is M584 for motor driver assignment.

the "no password" == "reprap" part I read 5 times and did not understand properly