Position-Controlled Spindle Operation (Spcon, Spcof) - Siemens SINUMERIK 828D Programming Manual

Feed control

7.3 Position-controlled spindle operation (SPCON, SPCOF)

7.3 Position-controlled spindle operation (SPCON, SPCOF)
Function
Position-controlled spindle mode may be advisable in some cases, e.g. in conjunction with
large-pitch thread cutting with
The
Note
SPCON
Syntax
SPCON
...
SPCOF
Significance
SPCON
SPCOF
Note
The speed is specified with
,
M3
Note
With synchronized spindle setpoint value linkage, the master spindle must be operated in
position-control mode.
124
NC command is used to switch over to position-controlled spindle mode.
SPCON
requires a maximum of 3 interpolation cycles.
/ /
SPCON(<n>) SPCON(<n>,<m>, etc.)
/ /
SPCOF(<n>) SPCOF(<n>,<m>, etc.)
: Activate position-controlled mode
The specified spindle is switched over from speed control to position control.
s modal and is retained until
SPCON
: Deactivate position-controlled mode
The specified spindle is switched over from position control to speed control.
:
<n>
<n>,<m>, etc.
and apply in respect of the directions of rotation and spindle stop.
M4 M5
, where better quality can be achieved.
G33
SPCOF
Number of the spindle to be switched over.
If a spindle number is not specified,
applied to the master spindle.
: or can even be used to switch over multiple
SPCON SPCOF
spindles in one block.
.
S...
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
.
/
SPCON
will be
SPCOF
Fundamentals