Siemens SINUMERIK 840Di - Changing Scaling Machine Data

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.4and bit  No.2
MD : SCALING_FACTORS_USER_DEF[n] 
1
ft
secs
2
1
mm
secs
2

12 * 25,4
mm
secs
2
1
mm
secs
2
 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-U
p
with HMI Advanced