Siemens SINUMERIK 828D Function Manual page 345

The machine data:
MD10240 $MN_SCALING_SYSTEM_IS_METRIC
and the corresponding G70/G71/G700/G710 settings in the machine data:
MD20150 $MN_GCODE_RESET_VALUES
are automatically switched over consistently for all configured channels.
During this process, the value in machine data:
MD20150 $MC_GCODE_RESET_VALUES[12]
changes between G700 and G710.
This process takes place independently of the protection level currently set.
Note
The availability of the softkey and, therefore, its functionality, can be configured using the
compatibility machine data:
MD10260 $MN_CONVERT_SCALING_SYSTEM
If several NCUs are linked by NCU-link, the switchover has the same effect on all linked
NCUs. If the prerequisites for a switchover are not fulfilled on one of the NCUs linked, no
switchover will take place on none of the NCUs. It is assumed that interpolations between
several NCUs will take place on the existing NCUs, whereby the interpolations can provide
correct results only if the same unit systems are used.
References:
/FB2/ Function Manual, Extended Functions; Several Control Panels on Multiple NCUs,
Decentralized Systems (B3)
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
G2: Velocities, setpoint / actual value systems, closed-loop control
7.3 Metric/inch measuring system
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