Starting Up Indexing Axes - Siemens SINUMERIK 802D sl Function Manual

Indexing Axes (T1)

21.5 Starting up indexing axes

The sign determines the approach direction.
Note
On modulo rotary axes, the indexing positions are divided in factors of 360° and approached
directly.
Between indexing positions
If an indexing axis is situated between two indexing positions, the program commands have
the following effect in AUTOMATIC mode:
Program command
POS[B]=CIC(1)
POS[B]=CIC(-1)
POS[B]=CIC(0)
21.5 Starting up indexing axes
Procedure
The procedure for starting up indexing axes is identical to normal NC axes (linear and rotary
axes).
Rotary axis
If the indexing axis is defined as a rotary axis (MD30300 IS_ROT_AX = 1) with modulo 360°
conversion (MD30310 ROT_IS_MODULO = 1), indexing positions are also approached with
modulo 360
indexing position table. Otherwise alarm 4080 "Incorrect configuration for indexing axis in
MD [Name]" is output during power-up.
The position display can be set to modulo 360° as follows:
MD30320 DISPLAY_IS_MODULO = 1
Special machine data
The following machine data must be set in addition:
General machine data
MD10900 INDEX_AX_LENGTH_POS_TAB_1
MD10920 INDEX_AX_LENGTH_POS_TAB_2
376
Effect
The next higher indexing position is approached.
The next lower indexing position is approached.
The indexing axis is not traversed.
. Only positions within the range from 0° to 359.999° can then be entered in the
o
Number of positions for indexing axis table 1
Number of positions for indexing axis table 2
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Turning, Milling, Nibbling