Siemens SINUMERIK 840Di sl - Changing Scaling Machine Data

NC Commissioning with HMI Advanced
11.3 System data
Manual
370 Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Table 11-7 Normalization of physical units of machine data and setting data: Machine data
Number Name Name/remarks
General ($MN_ ... )
10220 SCALING_USER_DEF_MASK Activation of standardizing factors
10230 SCALING_FACTORS_USER_DEF[n] Standardizing factors of physical quantities
10240 SCALING_SYSTEM_IS_METRIC Basic system metric
10250 SCALING_VALUE_INCH Conversion factor for switch-over to inch system
10260 CONVERT_SCALING_SYSTEM Basic system switch-over active
10270 POS_TAB_SCALING_SYSTEM Measuring system of position tables
10290 CC_TDA_PARAM_UNIT Physical units of the tool data for CC
10292 CC_TOA_PARAM_UNIT Physical units of the tool edge data for CC
11.3.3 Changing scaling machine data
The scaling of machine data having physical units is defined by the following machine data:
● MD10220 $MN_SCALING_USER_DEF_MASK (activation of standardizing factors)
● MD10230 $MN_SCALING_FACTORS_USER_DEF (standardizing factors of the physical
quantities)
● MD10240 $MN_SCALING_SYSTEM_IS_METRIC (basic system metric)
● MD10250 $MN_SCALING_VALUE_INCH (conversion factor for switchover to INCH
system)
● MD30300 $MA_IS_ROT_AX (rotary axis)
When scaling machine data are modified, all machine data affected by this modification due
to their physical unit are converted with the next NC reset.
Example: Redefining an A1 axis from linear to rotary axis
The control has been commissioned with default values. Axis A1 is declared as a linear axis.
● MD30300 $MA_IS_ROT_AX[A1] = 0 (no rotary axis)
● MD32000 $MA_MAX_AX_VELO [A1] = 1000 [mm/min] (max. axis velocity).
Axis A1 is now declared as a rotary axis containing the following machine data:
● MD30300 $MA_IS_ROT_AX[A1] = 1 (rotary axis)
● MD32000 $MA_MAX_AX_VELO [A1] = 1000 [mm/min] (max. axis velocity).
With the next NC reset, the control system recognizes that axis A1 is defined as a rotary axis
and rescales MD32000 $MA_MAX_AX_VELO related to a rotary axis [rev./min].
● MD30300 $MA_IS_ROT_AX[A1] = 1 (rotary axis)
● MD32000 $MA_MAX_AX_VELO [A1]= 2.778 [rev./min]
Note
If a scaling machine data item is altered, then the control outputs alarm "4070 Scaling
data changed".