HEIDENHAIN TNC 640 User Manual page 530

12
Control display
Unlike a datum shift in the NC program, the Shift (mW-CS)
option in the Global Program Settings function has an effect on
the actual position display.
The general status display shows the following icons:
No icon is displayed for offsets defined in the NC
program!
Shift (mW-CS) function active (default icon of the
Global Program Settings function)
The Shift (mW-CS) values are displayed on the GS tab of the
additional status display, the values from the NC program on the
TRANS tab.
Application example
Mirroring the CAM output:
CAM output for right mirror cap
The workpiece datum is located in the left front corner of the
workpiece blank.
NC program set to the center of the ball-nose cutter and TCPM
function with spatial angles
The left mirror cap is to be machined (X axis mirroring)
Open the Global Program Settings function
Activate Mirroring (W-CS) with marked X
Enter and activate Shift (mW-CS) to shift the workpiece datum
in the mirrored coordinate system
Run the NC program
The control takes the Mirroring (W-CS) value for the X axis and
the required rotary axes into account.
The control takes the modified position of the workpiece datum
into account.
Rotation (WPL-CS)
Refer to your machine manual.
Your machine tool builder can also disable individual
settings possibilities within the Global Program Settings
function.
The Rotation (WPL-CS) option in the Global Program Settings
function provides a coordinate transformation in the WPL-CS
working plane coordinate system.
Further information:
page 153
The Rotation (WPL-CS) option in the Global Program Settings
function is effective
based on this movement. The value is added to the rotation
defined in the NC program (e.g. Cycle 10 ROTATION).
530
"Working plane coordinate system WPL-CS",
after tilting the working plane and thus is
Special Functions | Global Program Settings (option 44)
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017