Siemens SINUMERIK 840D sl Function Manual page 976

Indexing Axes (T1)
Programming of indexing axes
Programming
POS[B]=CIC(-4)
Programming
POS[B]=CIC(35)
Special features
● Modulo rotary axis as indexing axis
● Indexing axis is between two indexing positions
Display of indexing position
The number of the indexing position programmed last can be read with the following system
variables:
$AA_PROG_INDEX_AX_POS_NO
The number of the indexing position traversed last can be displayed with the following
system variables:
$AA_ACT_INDEX_AX_POS_NO
The display depends on the setting in machine data:
MD10940 $MN_INDEX_AX_MODE (settings for indexing position)
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On modulo rotary axes, the indexing positions are divided in factors of 360° and
approached directly.
The specified position instructions have the following effect in the AUTOMATIC mode.
POS[B]=CIC(1)
POS[B]=CIC(-1)
POS[B]=CIC(0)
Comment
; Indexing axis B traverses four indexing positions
incrementally from its current position. in a negative
direction.
Comment
; Indexing axis B traverses 35 indexing positions
incrementally from its present position in a positive
direction.
The next higher indexing position is approached.
The next lower indexing position is approached.
The indexing axis is not traversed.
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions