Lift Off After Nc Stop - Liftoff G977; Activating Datum Shift G980; Activating Datum Shifts, Tool Lengthsg981 - HEIDENHAIN CNC PILOT 640 User Manual

DIN/ISO programming | Other G codes
Lift off after NC stop – LIFTOFF G977
G977 is only effective if machine parameter CfgLiftOff
(201401) is activated.
G977 enables you to define the lift-off movement after an NC stop
with respect to the tool and cutting pass.
G977 cannot be used in connection with thread cycles.
Machine parameter threadLiftOff (601804) is available for
thread cycles.
Parameters:
H: On/Off
0: deactivate
1: activate
A: Depart.angle – angle to the positive Z axis (no input: lift-off
angle corresponds to the bisecting line of the tool's cutting edge)
R: Length – lift-off distance (no input: value from machine
parameter distance (201402))
Operating notes:
If no value is defined in machine parameter distance
(201402), the control uses a lift-off distance of 1 mm
Recessing tools lift off paraxially
Example: G977
N 46 G977 H1 A30
...
N 55 T1
...
N 69 G977 H1 A30

Activating datum shift G980

G980 activates the workpiece datum and all datum shifts. Traverse
paths and position values are referenced to the distance of the
tool tip to the workpiece datum, while taking the datum shifts into
consideration.

Activating datum shifts, tool lengthsG981

G981 activates the workpiece datum, all datum shifts and the tool
dimensions. Traverse paths and position values are referenced to
the distance of the tool tip to the workpiece datum, while taking the
datum shifts into consideration.
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
Departure angle 30°
Bisecting line as departure angle
Departure angle again 30°
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