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G04 Dwell
Brother Speedio G-code · Mill
Pauses axis motion for a set time. Common at the bottom of a counterbore or before a spindle reverse.
Format
G04 P or G04 X
Addresses
| Address | What it does |
|---|---|
P | Dwell time in milliseconds, no decimal point |
X | Dwell time in seconds, decimal allowed |
How it works
Non-modal. Only active in its own block.
Example program
G01 Z-.25 F8. (FEED TO SPOT FACE DEPTH)
G04 P500 (DWELL HALF A SECOND)
G00 Z1. (RETRACT)
G04 P500 (DWELL HALF A SECOND)
G00 Z1. (RETRACT)
Example is in inch. Check offsets and clearances first.
Watch out for
- P1000 is one second. P1. with a decimal may be read differently, so check the manual.
- Keep dwells short on Speedio cycles. Long dwells add a lot to cycle time on high volume parts.
Related codes
G04 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Dwell |
| Haas NGC | Dwell |
| Mazak (EIA) | Dwell |
| Okuma OSP | Dwell |
| Mitsubishi M70 M80 | Dwell |
| Siemens 840D 828D | Dwell for time or spindle revolutions |
| Heidenhain TNC (ISO) | Dwell time |
| Fagor 8055 8065 | Dwell or stop block preparation |
| LinuxCNC Tormach | Dwell |
| Mach3 Mach4 | Dwell |
| Centroid CNC12 Acorn | Dwell |
| Hurco WinMax (NC) | Dwell |
| Fadal | Dwell |
| Swiss (Citizen Star) | Dwell |
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