Siemens SINUMERIK 840Di Function Manual page 391

This process takes place independently of the protection level currently set.
Note
The availability of the soft key 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/Description of Functions, Extended Functions; Several Control Panels on Multiple
NCUs, Decentralized Systems (B3)
System data
When changing over the measuring system, from the view of the user, all length-related
specifications are converted to the new measuring system automatically.
This includes:
• Positions
• Feedrates
• Acceleration rates
• Jerk
• Tool offsets
• Programmable, settable and work offsets external and DRF offsets
• Compensation values
• Protection zones
• Machine data
• Jog and handwheel factors
After the changeover, all of the above data is available in physical quantities.
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Detailed Description
2.2 Metric/inch measuring system
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