Documentation

M06 – Tool Change

M06 changes the tool immediately. Give the tool number with T, placed before M06.

Syntax

T__ M06

Also written

M6

Before M06

M05

WARNING

Always stop the spindle with M05 before M06, and always put the T value before M06. Otherwise results may be unpredictable. T5 M06 and M06 T5 give very different tool loading.

1. Tool numbers

MASSO G3 and G3 Touch use tools 0 to 118:

Tool number	Assigned to
T0	Dry Run Laser
T1 – T100	Main spindle tools
T101 – T104	Multi-head spindles 1 to 4
T111 – T118	Laser, Plasma, Oxy Torch, Water Jet, Scribe, Pen 1, Pen 2, Camera – see T – Tool Number

MASSO G2 NOTE

On MASSO G2, tool numbers are 0 to 31.

2. Example

N10 M05
N20 T5 M06

Code	Result
M05	Stops the spindle.
T5 M06	Selects tool 5 and changes to it.

This video shows why the tool number must come first:

3. Multi-head machines

Raise Z to a safe height before changing tools, so height differences between heads don't cause problems. One way is G53 Z0, which moves Z to the top of machine travel.

N10 M05
N20 G53 Z0
N30 T5 M06

Code	Result
M05	Stops the spindle.
G53 Z0	Moves Z to machine Z0 for clearance.
T5 M06	Selects tool 5 and changes to it.

4. Troubleshooting

Problem	Cause and fix
Tool doesn't change	The requested tool may already be loaded. MASSO remembers the last tool, even after power-off. Check the loaded tool on the F2 screen.
Tool change must be requested twice, or the previous tool loads again	Wrong command format. Use `Txx M06`, not `M06 Txx`. See the video above.
Z0 is wrong when using a tool setter	The tool setter or tool changer is being used incorrectly. See How the Tool Setter Works.