System Variables; Axis-Specific System Variables - Siemens SINUMERIK 840D sl Function Manual

T1: Indexing axes
16.3 Commissioning
16.3.2

System variables

16.3.2.1

Axis-specific system variables

$AA_PROG_INDEX_AX_POS_NO
Function
The system variable includes the number of the indexing position programmed for the indexing
axis.
Syntax
$AA_PROG_INDEX_AX_POS_NO[<axis>]
Meaning
$AA_PROG_INDEX_AX_POS_NO
> 0
$AA_ACT_INDEX_AX_POS_NO
Function
The system variable includes the number of the indexing position last reached by the indexing
axis, or indexing position that was passed by the indexing axis.
Syntax
$AA_ACT_INDEX_AX_POS_NO[<axis>]
Meaning
$AA_ACT_INDEX_AX_POS_NO
> 0
Axis-specific interface signals
When stopping the indexing axis at an indexing position ± exact stop window fine (MD36010
$MA_STOP_LIMIT_FINE), then the axis-specific interface signal is set:
DB31, ... DBX76.6 = 1 (indexing axis in position)
822
0 The axis is not an indexing axis, or presently the indexing axis is not traversing to an indexing
position
Number of programmed indexing position
0 The axis is not an indexing axis.
Number of the last indexing position reached or passed
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions