CNC Machinist Calculator UltraHome › G-codes › Haas NGC › G390
G390 Absolute position command
Haas NGC G-code · Lathe
Makes axis words absolute positions from the active work offset. On a lathe, absolute X and Z and incremental U and W are the normal way to switch.
Format
G390
How it works
Modal, group 03.
Example program
G390 (ABSOLUTE MODE)
G00 X2. Z.1 (ABSOLUTE POSITION)
G01 Z-1. F.01 (ABSOLUTE Z POSITION)
G00 X2. Z.1 (ABSOLUTE POSITION)
G01 Z-1. F.01 (ABSOLUTE Z POSITION)
Example is in inch. Check offsets and clearances first.
Watch out for
- Most lathe programs use X Z for absolute and U W for incremental and never need G390.
Related codes
Every G-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 G390 in the app All Haas NGC G-codes