Siemens SINUMERIK 840D sl Function Manual page 545

Optimization of velocity control
The following machine data are used to optimize the velocity control in jog mode and in
positioning and oscillation modes:
TRAANG_PARALLEL_VELO_RES_m
Machine data MD24720 $MC_TRAANG_PARALLEL_VELO_RES_m is used to set the
velocity reserve which is held on the parallel axis for compensatory motion (see the following
machine data).
MD24110 $MC_TRAFO_AXES_IN_n[1]
Range of values: 0 ... 1
0: When value 0 is set, the control system automatically determines the reserve: the axes
are limited with equal priority (= default setting).
>0: Values >0 result in the reserve to be set as allowed machine axis velocity for the parallel
axis in the following machine data:
MD24720 $MC_TRAANG_PARALLEL_VELO_RES_m
The velocity characteristics of the vertical axis are determined by the control system on the
basis of the reserve.
TRAANG_PARALLEL_ACCEL_RES_m
The following machine data is used to set the axis acceleration reserve which is held ready
on the parallel axis (see MD24110 $MC_TRAFO_AXES_IN_n[1]) for compensatory motion:
MD24721 $MC_TRAANG_PARALLEL_ACCEL_RES_m
Range of values: 0 ... 1
0: When value 0 is set, the control system automatically determines the reserve: the axes
are accelerated with equal priority. (= default)
>0: Values >0 result in the acceleration to be set as allowed machine acceleration value for
the parallel axis in the following machine data:
MD24721 $MC_TRAANG_PARALLEL_ACCEL_RES_m
The velocity characteristics of the vertical axis are determined by the control system on the
basis of the reserve.
Replaceable geometry axes
The PLC is informed when a geometry axis has been replaced using GEOAX( ) through the
optional output of an M code that can be set in machine data.
● MD22534 $MC_TRAFO_CHANGE_M_CODE
References:
/FB1/ Function Manual Basic Functions; Coordinate Systems, Axis Types, Axis
Configurations, Workpiece-related Actual-Value System, External Zero Offset (K2).
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Number of the M code that is output at the VDI interface in the case of transformation
changeover.
Note
If this machine data is set to one of the values 0 to 6, 17, 30, then no M code is output.
M1: Kinematic transformation
7.4 TRAANG (option)
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