Siemens SINUMERIK 840D sl Programming Manual page 363

Procedure for outside measurement with _MVAR=2, _MA=2:
(safety zone _SZA, _SZO active)
1: Approach path outside diameter (user)
2 to 7: Traverse paths generated by the cycle for measuring on the outside diameter taking
the safety zone _SZA, _SZO (4 to 6) into account
8 to 9: Retraction to the original point (user)
Procedure for inside measurement with _MVAR=2, _MA=2:
(no safety zone active)
1, 2: Approach paths inside diameter (user)
3 to 5: Traverse paths generated by the cycle for measuring on the inside diameter
6: Retraction paths to the original point (user)
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring Cycles for Turning Machines
6.6 CYCLE994 workpiece: 2-point measurement
6-87