S-, T-, M- And B Functions; Spindle Function (S Function) - Siemens SINUMERIK 808D Programming And Operating Manual

Programming example:
3.3.5

S-, T-, M- and B functions

3.3.5.1

Spindle function (S function)

The spindle speed is specified in rpm in Address S. The direction of spindle rotation is selected with M3 and M4. M3 = right
direction of spindle rotation, M4 = left direction of spindle rotation. The spindle stops with M5. Details are available in the
documentation of your machine manufacturer.
● S commands are modal, i.e., they remain active up to the next S command once they are programmed. The S command
is maintained if the spindle is stopped with M05. If M03 or M04 is programmed thereafter without specifying an S
command, then the spindle starts at the originally programmed speed.
● If the spindle speed is changed, please pay attention to which gear stage is currently set for the spindle. Details are
available in the documentation of your machine manufacturer.
● The lower limit for the S command (S0 or an S command near S0) depends on the drive motor and the drive system of
the spindle and is different from machine to machine. Negative values are not permitted for S! Details are available in the
documentation of your machine manufacturer.
46
Programming and Operating Manual (ISO Turning/Milling)
01/2017