Siemens SINUMERIK 840D sl Programming Manual page 204

Measuring Cycles for Milling and Machining Centers
5.5 CYCLE978 workpiece: Measuring a surface parallel to the axis
Preconditions for differential measurement
• Spindle can be positioned between 0...360 degrees (at least every 90 degrees, with
• Multidirectional probe (all-round coverage)
Programming
CYCLE978
Measuring variants
Measuring cycle CYCLE978 permits the following measuring variants which are specified via
parameter _MVAR.
Value
0
100
1000
1100
Result parameters
Depending on the measuring variant, measuring cycle CYCLE978 makes the following
values available as results in data block GUD5:
Parameter
_OVR [0]
_OVR [1]
_OVR [2]
_OVR [3]
_OVR [4]
_OVR [5]
_OVR [6]
_OVR [7]
_OVR [8]
_OVR [12]
_OVR [16]
_OVR [17]
_OVR [18]
_OVR [19]
_OVR [20]
_OVR [27]
5-70
SPOS command)
Measuring variant
Measure surface and tool offset
ZO determination on surface and ZO correction
Measure surface with differential measurement and tool offset
ZO determination on surface with differential measurement and ZO correction
Data type
REAL
REAL
REAL
REAL
REAL
REAL
REAL
REAL
REAL
1)
REAL
1)
REAL
REAL
REAL
REAL
REAL
1)
REAL
1)
Result
Setpoint value for measuring axis
Setpoint in abscissa → only when _MA=1
Setpoint in ordinate → only when _MA=2
Setpoint in applicate → only when _MA=3
Actual value for measuring axis
Actual value in abscissa → only when _MA=1
Actual value in ordinate → only when _MA=2
Actual value in applicate → only when _MA=3
Upper tolerance limit for measuring axis
Lower tolerance limit for measuring axis
Difference for measuring axis
Difference in abscissa → only when _MA=1
Difference in ordinate → only when _MA=2
Difference in applicate → only when _MA=3
Compensation value
Zero offset area
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring cycles