Siemens SINUMERIK 840D sl Programming Manual page 101

Significance
G96:
G961:
G962:
S... :
G97:
G971:
G972:
G973:
LIMS:
SCC:
Note
When G96/G961/G962 is selected for the first time, a constant cutting rate S... must be
entered; when G96/G961/G962 is selected again, the entry is optional.
Note
The speed limitation programmed with LIMS must not exceed the speed limit programmed
with G26 or defined in the setting data.
Note
The reference axis for G96/G961/G962 must be a geometry axis assigned to the channel at
the time when SCC[<axis>] is programmed. SCC[<axis>] can also be programmed
when any of the G96/G961/G962 functions are active.
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
6.3 Constant cutting rate (G96/G961/G962, G97/G971/G972, G973, LIMS, SCC)
Constant cutting rate with feedrate type G95: ON
G95 is activated automatically with G96. If G95 has not been activated
previously, a new feedrate value F... will have to be specified when G96 is
called.
Constant cutting rate with feedrate type G94: ON
Constant cutting rate with feedrate type G94 or G95: ON
Note:
See " Feedrate (G93, G94, G95, F, FGROUP, FL, FGREF) [Page 109]" for
information about G94 and G95.
In conjunction with G96, G961 or G962, S... is not interpreted as a spindle
speed but as a cutting rate. The cutting rate is always applied to the master
spindle.
Unit: m/min (for G71/G710) or feet/min (for G70/G700)
Range of values: 0.1 m/min to 9999 9999.9 m/min
Deactivate constant cutting rate with feedrate type G95
After G97 (or G971), S... is again interpreted as a spindle speed in rpm. In
the absence of a new spindle speed being specified, the last speed set with
G96 (or G961) is retained.
Deactivate constant cutting rate with feedrate type G94
Deactivate constant cutting rate with feedrate type G94 or G95
Deactivate constant cutting rate without activating spindle speed limitation
Speed limitation for the master spindle (only applied if G96/G961/G97 active)
On machines with selectable master spindles, limitations of differing values
can be programmed for up to four spindles within one block.
<spindle>:
<value>:
If any of the G96/G961/G962 functions are active, SCC[<axis>] can be
used to assign any geometry axis as a reference axis.
Number of spindle
Spindle speed upper limit in rpm
Spindle motion
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