Siemens SINUMERIK 840D sl Function Manual

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The following machine data are automatically switched over consistently for all configuredchannels:● MD10240 $MN_SCALING_SYSTEM_IS_METRIC● MD20150 $MN_GCODE_RESET_VALUESReset positionWhen the system of units is switched over, the reset position of the G group 13 is automaticallyadapted.● MD20150 $MC_GCODE_RESET_VALUES[12] = NoteThe availability of the softkey and, therefore, its functionality, can be configured using thecompatibility machine data:MD10260 $MN_CONVERT_SCALING_SYSTEMIf several NCUs are linked by NCU-link, the switchover has the same effect on all linked NCUs.If the requirements for a switchover are not fulfilled on one of the connected NCUs, noswitchover will take place on any of the NCUs. It is assumed that interpolations between severalNCUs will take place on the existing NCUs, whereby the interpolations can provide correctresults only if the same systems of units are used.References:Function Manual, Extended Functions; Several Control Panels on Multiple NCUs, DistributedSystems (B3)System dataWhen the system of units is switched over, from the user's viewpoint, all length-relatedspecifications are converted to the new system of units automatically.This includes:● Positions● Feedrates● Accelerations● Jerk● Tool offsets● Programmable, settable and external zero offsets and DRF offsets● Compensation values● Protection zones● Machine data● Jog and handwheel factorsAfter the changeover, all of the above data is available in physical quantities.G2: Velocities, setpoint / actual value systems, closed-loop control7.3 Metric/inch measuring systemBasic Functions330 Function Manual, 01/2015, 6FC5397-0BP40-5BA2