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G4 G-code
G4 means “pause for a given duration of time”.
Format
The command is used as such:
G4 S5
Which means: pause for 5 seconds.
This is useful for example to wait for spindles to ramp up to speed, or to wait for small layers to cool down on 3D printers.
Parameters
| Parameter | Usage | Example |
|---|---|---|
S |
Duration to wait in seconds | G4 S10 |
P |
Duration to wait in milliseconds (thousandth of a second) | G4 P100 |
Note that if grbl_mode is set to true then the P parameter is the duration to wait in seconds, not milliseconds, as a float value. This is to conform to G-Code standards.
Further reading
These resources are used as references for Gcode: