[...]
Changing monitoring state from "Operational" to "Starting"
Send: N0 M110 N0*125
Recv: ok
Changing monitoring state from "Starting" to "Printing"
Send: N1 M107*36
Recv: ok
Send: N2 M190 S70*93
[...]
Recv: echo:busy: processing
Printer seems to support the busy protocol, will adjust timeouts and set busy interval accordingly
[...]
Recv: echo:busy: processing
[...]
Recv: echo:busy: processing

[...]
Recv: echo:busy: processing
[...]
Recv: ok
Send: N3 M113 S2*98
Recv: ok
Send: N4 M104 S210*98
Recv: ok
Send: N5 G28*22
[...]
Recv: echo:busy: processing
[...]