Feedrate Control and Spindle Motion
7.13 Constant cutting rate (G96, G961, G97, G971, LIMS)
Fundamentals
7-40 Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
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Note
On loading the block into the main run, all programmed values are transferred into the
setting data.
Deactivate constant cutting rate, G97/G971
After G97/G971 the control interprets an S word as a spindle speed in rpm again. If you do
not specify a new spindle speed, the last speed set by G96/G961 is retained.
• The G96/G961 function can also be deactivated with G94 or G95. In this case, the last
programmed speed S is used for further machining operations.
• G97 can be programmed without G96 beforehand. The function then has the same effect
as G95; LIMS can also be programmed.
• With G961 and G971 the constant cutting rate can be activated/deactivated.
Note
The transverse axis must be defined in machine data.
Rapid traverse G0
With rapid traverse G0, there is no change in speed. Exception: if the contour is approached
in rapid traverse and the next NC block contains a G1, G2, G3 … path command, the speed
is adjusted in the G0 approach block for the next path command.
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