Siemens SINUMERIK 840D sl Programming Manual page 348

Measuring Cycles for Turning Machines
6.6 CYCLE994 workpiece: 2-point measurement
Tool offset
An offset can be applied for the tool that machined the workpiece. This tool is specified in
_TNUM and _TNAME. The D number and type of offset are specified in coded form in
variable _KNUM.
Extended tool offset is also possible. With this function a tool from a particular stored tool
environment _TENV, and additive, setup offsets can be corrected by specifying the DL
number in _DLNUM.
Detailed information on the parameters: see section "Description of the most important
defining parameters".
Empirical values and mean values
An empirical value stored in data block GUD5 in array _EV[ ] can be included in calculation
of the result after measurement is completed.
Optionally, averaging is performed over a number of parts (array _MV[ ]) and the tolerance
bands are checked.
Both are activated in _EVNUM (see Section "Description of the most important defining
parameters").
Measuring variants
Measuring cycle CYCLE994 permits the following measuring variants that are specified in
parameter _MVAR.
Value
1
2
348
Meaning
2-point inside measurement with programmed safety zone
2-point measurement:
Outside measurement with programmed safety zone
•
Inside measurement without safety zone
•
Programming Manual, 03/2009 Edition, 6FC5398-4BP10-2BA0
Measuring cycles