Printer name as global variable used with M550

Yao

hi, does anyone know how i can use multiple global variables into one string with the M550 (printername)?

global AccName="Myprinter"
global serial="467"

How to combine these two behind the: M550 P.....

Thanks!

T3P3Tony

@Yao Have a look at string concatenation operator here:

https://docs.duet3d.com/en/User_manual/Reference/Gcode_meta_commands#binary-infix-operators

e.g.
M550 P{global.AccName^global.serial}

Yao

@T3P3Tony it just returns the name to : My Duet...

I cant even get

M550 P{global.AccName}

to work...
i dont get it.

Yao

@T3P3Tony

my bad.
line was before global !!!!

T3P3Tony

@Yao i tend to use echo to test stuff from the console before trying it in an actual macro which helps debug.

Yao

@T3P3Tony the echo worked... but in the config.g that M550 was in the wrong location...
I use an external file with all globals, this was loaded after the M550 command,
...I was not paying attention...