Siemens Sinumerik 840D sl Programming Manual page 89

Other reference axis for G96/G961/G962:
SCC[<axis>]
Note
SCC[<axis>] can be programmed together with G96/G961/G962 or in isolation.
Meaning
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.
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
7.3 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 97)" for information
about G94 and G95.
In conjunction with G96, G961 or G962, S... is not interpreted as a spindle speed but
rather as a cutting rate. The cutting rate is always applied to the master spindle.
Unit: m/min (for G71/G710) or ft/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.
Number of spindle
<spindle>:
Spindle speed upper limit in rpm
<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.
Spindle motion
89