Siemens SINUMERIK 802D sl Programming And Operating Manual page 256

Programming
10.4 Spindle movement
Programming via spindle number
Some spindle functions can also be selected via the spindle number:
S1=..., S2=...
M1=3, M1=4, M1=5
M2=3, M2=4, M2=5
M1=40, ..., M1=45
M2=40, ..., M2=45
SPOS [n]
SPI(n)
$P_S[n]
$AA_S[n]
$P_SDIR[ n ]
$AC_SDIR[ n ]
2 spindles installed
The following can be interrogated in the program via the system variable:
$P_NUM_SPINDLES
$P_MSNUM
$AC_MSNUM
256
; Spindle speed for spindle 1 or 2
; Specifications for direction of rotation, stop for
spindle 1
; Specifications for direction of rotation, stop for
spindle 2
; gear stages for spindle 1 (if available)
; gear stages for spindle 2 (if available)
; Position spindle n
; Converts spindle number n to axis identifier,
; e.g. "SP1" or "CC"
; n must be a valid spindle number (1 or 2)
; The functions of spindle identifiers SPI(n) and Sn are
identical.
; Last programmed speed of spindle n
; Actual speed of spindle n
; Last programmed direction of rotation of spindle n
; Current direction of rotation of spindle n
; Number of configured spindles (in the channel)
; Number of programmed master spindle
; Number of the active master spindle
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
Surface grinding