Siemens SINUMERIK 840D sl Function Manual page 937

Programming
POS[B]=CDC(50)
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)
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
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 approaches indexing position 50
directly along the shortest path (possible only for
rotary axes).
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.
Indexing Axes (T1)
16.4 Programming of indexing axes
937