06.03
10.3 System data
10-285
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
MD : SCALING_USER_DEF_MASK
H14
; (bit
No. 4 and bit
No. 2
MD : SCALING_FACTORS_USER_DEF[n]
1
ft
secs2
1
mm
secs2
12 * 25, 4
mm
secs2
1
mm
secs2
304, 8;
MD : SCALING_FACTORS_USER_DEF[4]
304, 8
of example 1 as hex value)
Index 4 specifies the “linear acceleration” (see above).
Table 10-8
Normalization of phys. units of machine data and setting data: Machine data
Number
Identifier
Name/remarks
Ref.
General ($MN_ ...)
10220
SCALING_USER_DEF_MASK
Activating the scaling factors
10230
SCALING_FACTORS_USER_DEF[n]
Scaling factors of the physical units
10240
SCALING_SYSTEM_IS_METRIC
Metric scaling system
10250
SCALING_VALUE_INCH
Conversion factor for switchover to the inch sys-
tem
10260
CONVERT_SCALING_SYSTEM
Basic system switch active
10270
POS_TAB_SCALING_SYSTEM
Unit system of position tables
T1
10290
CC_TDA_PARAM_UNIT
Physical units of tool data for CC
10292
CC_TDA_PARAM_UNIT
Physical units of cutting edge data for CC
10.3.3
Changing scaling machine data
The scaling of machine data having physical units is defined by the following
machine data:
S
MD 10220: SCALING_USER_DEF_MASK (activation of scaling factors)
S
MD 10230: SCALING_FACTORS_USER_DEF (scaling factors of physical
quantities)
S
MD 10240: SCALING_SYSTEM_IS_METRIC (basic system metric)
S
MD 10250: SCALING_VALUE_INCH (conversion factor for switchover to
INCH system)
S
MD 30300: IS_ROT_AX (rotary axis)
When scaling machine data are modified, all machine data affected by this mod-
ification due to their physical unit are converted with the next NCK reset.
Example: Redefining an A1 axis from linear to rotary axis.
Machine data
10 NC Start-Up with HMI Advanced
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