Programming Example - Siemens SINUMERIK 840D sl Programming Manual

Measuring Cycles for Milling and Machining Centers
5.3 CYCLE976 calibrate workpiece probe
Prerequisite
The probe must be called as a tool with a tool length offset.
Tool type, preferably: 710
When using the cycle on a turning machine: set type 5xy and _CBIT[14]=0.
Parameter
Parameter
_MVAR
_SETVAL
_MA
_MD
_PRNUM
The following additional parameters are also valid:
_VMS, _CORA, _TZL, _TSA, _FA and _NMSP.
_CORA only relevant for monodirectional probe.
NOTICE
The first time calibration is performed the default setting in the array of the probe is still "0".
For that reason _TSA>probe ball radius must be programmed to avoid alarm "Safe area
violated".
See also
Variable measuring velocity: _VMS (Page 76)
Offset angle position: _CORA (Page 76)
Tolerance parameters: _TZL, _TMV, _TUL, _TLL, _TDIF and _TSA (Page 77)
Measurement path: _FA (Page 78)
Multiple measurement at the same location: _NMSP (Page 81)
5.3.4.2

Programming example

Calibrating a workpiece probe on the workpiece.
Workpiece probe 1 is to be calibrated in the Z axis on the surface at position
Z= 20,000 mm of a clamped workpiece: Determine trigger value in minus direction _WP[0.5].
Clamping for workpiece:
Zero offset, with settable ZO G54: NVx, NVy, ...
132
Data type
0
REAL
1, 2 or 3
0 positive axis direction
1 negative axis direction
INT, >0
Meaning
Calibration variant: Calibration on surface
Calibration setpoint (position of surface)
Measuring axis
Measuring direction
Probe number
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles