Siemens SINUMERIK 840D sl Programming Manual page 156

Measuring Cycles for Milling and Machining Centers
5.2 CYCLE971 tool: Measuring milling tools, drills
• If the spindle is motionless when the measuring cycle is called, the direction of rotation is
Monitoring for measuring with rotating spindle and cycle-internal calculation
Parameter Type
_CM[0]
_CM[1]
_CM[2]
_CM[3]
_CM[4]
_CM[5]
_CM[6]
_CM[7]
Notice
If the spindle is already rotating when the measuring cycle is called, this direction of rotation
remains independent of _CM[5]!
5-22
The monitoring functions from array _CM[] are not active!
determined from _CM[5].
Meaning
REAL Maximum permissible peripheral speed [m/min]/[feet/min]
Default setting: 100 m/min
REAL Maximum permissible speed for measuring with rotating spindle [rpm]
(speed is automatically reduced if this is exceeded)
Default setting: 1000 RPM
REAL Minimum feedrate for first probing operation [mm/min]/[inch/min]
(prevents feed rates which are too low when working with large tool radii)
Default setting: 1 mm/min
REAL Required measuring accuracy [mm]/[inch]
Is effective during last probing
Default setting: 0.005 mm
REAL Maximum feedrate for probing [mm/min]/[inch/min]
Default setting: 20 mm/min
REAL Direction of spindle rotation during measuring
Default setting: 4 = M4
REAL Feed factor 1
Values:
Default setting: 10
REAL Feed factor 2
Values:
Feed factor 2 should be smaller than feed factor 1.
Default setting: 0
0: Probing just once with calculated feedrate (but at least value of
_CM[2])
≥1: 1. Probing with calculated feedrate (but at least value of _CM[2]) ·
Feed factor 1
0: 2. Probing with calculated feedrate
(only active when _CM[6]>0)
≥1: 2. Probing action with calculated feed · Feed factor 2
3. Probing with calculated feed
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring cycles