CNC Machinist Calculator UltraHome › M-codes › Haas NGC › M143
M143 Secondary spindle forward
Haas NGC M-code · Lathe
Starts the secondary spindle forward on DS lathes. P sets the RPM.
Format
M143 P
Addresses
| Address | What it does |
|---|---|
P | Secondary spindle speed in RPM |
How it works
Modal until M144 or M145.
Example program
M143 P1200 (SECONDARY SPINDLE FORWARD 1200 RPM)
G04 P1. (LET IT COME UP TO SPEED)
M145 (SECONDARY STOP)
G04 P1. (LET IT COME UP TO SPEED)
M145 (SECONDARY STOP)
Example is in inch. Check offsets and clearances first.
Watch out for
- M143 alarms while G14 is on. Use M03 instead under G14.
Related codes
M143 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Okuma OSP | Coolant Pressure High |
| Heidenhain TNC (ISO) | Delete basic rotation |
Every M-code for Haas NGC in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open M143 in the app All Haas NGC M-codes