Correcting the preset with PRESET CORR
Application
The function PRESET CORR allows you to correct the active preset.
Requirement
- The preset table contains values
- Workpiece preset has been defined
Description of function
The control offsets the entered value against the actual table value. You can enter either a positive or a negative value.
If both the basic rotation and a translation are corrected in an NC block, the control will first correct the translation and then the basic rotation.
The compensation values are given with respect to the input coordinate system I-CS. When correcting the OFFS values, the values reference the machine coordinate system M-CS.
Input
NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.
Change the following contents as needed:
- Tools
- Cutting parameters
- Feed rates
- Clearance height or safe position
- Machine-specific positions (e.g., with M91)
- Paths of program calls
Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.
In addition, test the NC programs using the simulation before the actual program run.
With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.
11 PRESET CORR X+10 SPC+45 | ; Correct the workpiece preset in X by +10 mm and in SPC by +45° |
To navigate to this function:
Insert NC function All functions Special functions Program defaults Preset management (PRESET) PRESET CORR
The NC function includes the following syntax elements:
Syntax element | Meaning |
---|---|
PRESET CORR | Syntax initiator for correcting the workpiece preset |
X, Y, Z | Compensation values in the principal axes Optional syntax element |
SPA, SPB, SPC | Compensation values for the spatial angle Optional syntax element |
X_OFFS, Y_OFFS, Z_OFFS, A_OFFS, B_OFFS, C_OFFS, U_OFFS, V_OFFS, W_OFFS | Compensation value for the offsets, referenced to the machine datum Optional syntax element |
Note
If you use PRESET CORR to correct the offset of a modulo axis, the control always writes a value in the module range –360° to +360° in the preset table.
If a rotary axis already has an offset outside of the modulo range, you can reduce the value with PRESET CORR and the entry 0 in the modulo range.
Definitions
Modulo axis
Modulo axes are axes whose encoder only returns values between 0° and 359.9999°. If an axis is used as a spindle, then the machine manufacturer must configure this axis as a modulo axis.
Modulo counting method
The position display of a rotary axis with the modulo counting method is between 0° and 359.9999°. If the value exceeds 359.9999°, the display starts over at 0°.