Siemens SINUMERIK 840DE Programming Manual page 263

The spindle can also be operated as a path axis, synchronized axis or positioning axis at the
address defined in the machine data. When the axis identifier is specified, the spindle is in
axis mode. M70 switches the spindle directly to axis mode.
Switching off
SPOS, M19 and SPOSA effect a temporary switchover to position-controlled operation until
the next M3 or M4 or M5 or M41 to M45. If the position control was activated with SPCON
prior to SPOS, then this remains active until SPCOF is issued.
Programming
SPOS=... or SPOS[n]=...
Or
M19 or M[n]=19
Or
SPOSA=... or SPOSA[n]=...
Or
M70 or Mn=7
Or
FINEA=... or FINEA[n]=...
Or
COARSEA=... or COARSEA[n]=...
Or
IPOENDA=... or IPOENDA[n]=...
Or
IPOBRKA=... or IPOBRKA(axis[,REAL]) (programmed in a separate NC block)
Or
WAITS or WAITS(n,m) (programmed in a separate NC block)
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
7.4 Positioning spindles (position-controlled axis operation) (SPOS, M19 and SPOSA)
Feedrate Control and Spindle Motion
7-13