Examples; Creating A Gantry Grouping - Siemens SINUMERIK 840D sl Function Manual

G1: Gantry axes

2.7 Examples

2.7 Examples
2.7.1

Creating a gantry grouping

Introduction
The gantry grouping, the referencing of its axes, the orientation of possible offsets and, finally,
the synchronization of the axes involved are complicated procedures. The individual steps
involved in the process are explained below by an example constellation.
Constellation
Machine axis 1 = gantry leading axis, incremental measuring system
Machine axis 3 = gantry synchronized axis, incremental measuring system
Machine data
The following machine data describe the original values at the beginning of the procedure.
Individual settings must be corrected or added later according to the information below.
Gantry machine data
Axis 1
MD37100 $MA_GANTRY_AXIS_TYPE = 1 (gantry axis definition)
MD37110 $MA_GANTRY_POS_TOL_WARNING =0 (gantry warning limit)
MD37120 $MA_GANTRY_POS_TOL_ERROR = e.g. 1 (gantry trip limit)
MD37130 $MA_GANTRY_POS_TOL_REF = e.g. 100 mm (max. misalignment) (gantry trip
limit for referencing)
MD37140 $MA_GANTRY_BREAK_UP = 0 (invalidate gantry grouping)
Axis 3
MD37100 $MA_GANTRY_AXIS_TYPE= 11
MD37110 $MA_GANTRY_POS_TOL_WARNING = 0
MD37120 $MA_GANTRY_POS_TOL_ERROR = e.g. 1 mm
MD37130 $MA_GANTRY_POS_TOL_REF = e.g. 100mm (max. misalignment)
MD37140 $MA_GANTRY_BREAK_UP = 0
Reference point machine data (for first encoder each)
Axis 1
MD34000 $MA_REFP_CAM_IS_ACTIVE = TRUE
MD34010 $MA_REFP_CAM_DIR_IS_MINUS = e.g. FALSE
MD34020 $MA_REFP_VELO_SEARCH_CAM =
172
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions