Positioning Spindles (Spos, Sposa, M19, M70, Waits) - Siemens SINUMERIK 840D sl Programming Manual

Note
For a synchronous spindle with setpoint coupling, it is not permissible that the leading spindle
is switched into the speed-controlled mode using SPCOF.
2.7.4

Positioning spindles (SPOS, SPOSA, M19, M70, WAITS)

SPOS, SPOSA or M19 can be used to set spindles to specific angular positions, e.g. during tool
change.
SPOS, SPOSA and M19 induce a temporary switchover to position-controlled mode until the
next M3/M4/M5/M41 to M45.
Positioning in axis mode
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.
End of positioning
The end-of-motion criterion when positioning the spindle can be programmed using FINEA,
CORSEA, IPOENDA or IPOBRKA.
The program advances to the next block if the end of motion criteria for all spindles or axes
programmed in the current block plus the block change criterion for path interpolation are
fulfilled.
Synchronization
In order to synchronize spindle movements, WAITS can be used to wait until the spindle
position is reached.
Requirements
The spindle to be positioned must be capable of operation in position-controlled mode.
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Fundamentals
2.7 Feed control
117