Siemens SINUMERIK 802D sl Function Manual page 374

Indexing Axes (T1)
21.3 Parameterization of indexing axes
Inch/metric switchover
The indexing positions refer to the configured system of units:
● MD10270 POS_TAB_SCALING_SYSTEM = 0: metric
● MD10270 POS_TAB_SCALING_SYSTEM = 1: inch
Entry format
● The indexing positions must be entered in the table in ascending order (starting with the
● The axis positions must be entered in the basic coordinate system.
● If the indexing axis is defined as a rotary axis with modulo 360°(MD30300 IS_ROT_AX=1
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Note
MD10270 defines the scaling system of the position data for the following machine data:
MD10910 INDEX_AX_POS_TAB_1
MD10930 INDEX_AX_POS_TAB_2
MD10270 affects the following setting data:
SD41500 SW_CAM_MINUS_POS_TAB_1 to
SD41507 SW_CAM_PLUS_POS_TAB_4
MD10270 is not visible in expert mode!
negative to the positive traversing range) with no gaps between the entries. Consecutive
position values cannot be identical.
and MD30310 ROT_IS_MODULO=1), the following points must be considered for
indexing positions:
– Indexing positions are allowed in the range from 0° ⋜ Pos < 360°. Positions outside
this range generate alarm 4080 on power-up.
– Since the indexing axis is defined as a continuously rotating rotary axis, indexing
position 1 is approached after the highest valid indexing position in the table has been
reached and the axis continues to traverse in the positive direction with INC. Similarly,
indexing position 1 is followed by the highest valid indexing position in the negative
direction with INC.
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0