Leading Edge HX8410 User Manual - page 16
G21
After this, units
will be in mm
Best practice: do this at the start of a program and
nowhere else. The usual minimum increment in G21 (one
thousandth of a millimeter, .001 mm, that is, one
micrometer).
All Grbl versions
G28
Go to Pre-
Defined
Position
Takes an argument of an X Y Z coordinate for the intermediate point that the
tool tip will pass through on its way home to machine zero. v0.7 “Incorrectly
performed the homing cycle” Usually used to park the machine.
http://www.cnccookbook.com/CCCNCGCodeG28ReturntoReference.htm
(v0.8 or later)
G28.1
Set Pre-Defined
Position
Takes X Y Z addresses which define the intermediate
point that the tool tip will pass through on its way home
to part zero, not machine zero.
(v0.8 or later)
G30
Go to Pre-
Defined
Position (Return
to secondary
home position)
Takes a P address specifying which machine zero point is desired, if the
machine has several secondary points (P1 to P4). Takes X Y Z addresses
which define the intermediate point that the tool tip will pass through on its way
home to machine zero. v0.7 “Incorrectly performed the homing cycle”
Usually used to park the machine. G28 above.
(v0.8 or later)
G30.1
Set Pre-Defined
Position
Stores the current absolute position.
(v0.8 or later)
G38.1 Probe cycle
(v0.9 or later)
G38.2 Straight Probe
Probe toward workpiece, stop on contact, signal error if
failure
(v0.9h or later)
G38.3 Probe
Probe toward workpiece, stop on contact
(v0.9i or later)
G38.4 Probe
Probe away from workpiece, stop on loss of contact,
signal error if failure
(v0.9i or later)
G38.5 Probe
Probe away from workpiece, stop on loss of contact
(v0.9i or later)
G40
Tool radius
comp off
This actually is the only mode which Grbl runs in (there's
no way to turn on tool radius compensation), please see
below.
(v0.9i edge or later)
G43.1
Dynamic tool
length offset
Change subsequent motions by offsetting the Z and/or X offsets stored in the
tool table. Does not cause any motion, but will be applied the next time a
compensated axis is moved, that axis’s endpoint will be the compensated
location. See G38.1 above for a link which discusses using this.
(v0.9h or later)
G49
Cancel tool
offset.
Cancels tool offset set by G43 or G44
(v0.9h or later)
G53
Absolute mode
override
Move in Machine Coordinates. Preface to a movement command on the same
line which causes the machine to disregard any coordinate system which is in
effect. G53 G0 X0 Y0 Z0 will return to the machine home / origin.
All Grbl versions
G54--
G59
Work
Coordinate
Systems
Fixture offset
v0.8 or later)
G61
Exact path
control mode
This is the default path mode Grbl run in.
(v0.9i build
20150529 or later)
G80
Motion mode
cancel
Canned cycle
All Grbl versions