Fanuc Symbol CAPi T Operators Manual

B–63304EN/02
2. CONVERSION OF INPUT UNIT
(MM/INCH)
AUXILIARY JOBS
299
2
CONVERSION OF INPUT UNIT (MM/INCH)
WARNING
When the system of units is changed, the system
parameters and MTF data may also be changed. If these
data values are not set appropriately for the actual machine
being used, correct NC data cannot be prepared.
Machining with incorrect NC data may result in the tool
colliding with the workpiece, or forced machining occurring,
possibly causing damage to the machine and/or tool itself,
or injury to the user.
In Symbolic FAPT, the input data unit is coincide with the output NC tape
unit. If a blank dimension or a parts figure was input in the mm unit, for
example, all other data should be input in the mm unit. Also, an NC tape
is output in the mm unit.
However, if a drawing is written in the inch unit and employed in a mm
system machine tool, you can prepare an inch unit NC tape by the
Symbolic FAPT function and operate the machine tool by the inch/metric
conversion function of the NC machine tool.
When the metric system is converted to the inch system or the opposite
conversion is done, answer to request of REQUEST = as follows.
REQUEST = UNIT _T _M “INPUT”
The command in can be omitted.
1) REQUEST = UNIT “INPUT”
When entering like the abovementioned, the unit system of
system parameter and MTF changes. (As the present
specification).
For details, see (e) in (2) Notes on conversion of unit.
2) REQUEST = UNIT_T “INPUT”
When entering like the abovementioned, as the system supposes
that the unit system of the current tooling information is different
from the current unit system, it is converted to the current unit
system.
3) REQUEST = UNIT_M “INPUT”
When entering like the abovementioned, as the system supposes
that the unit system of the current material data is different from the
current unit system, it is converted to the current unit system.
4) REQUEST = UNIT_T_M “INPUT”
When entering like the abovementioned, tooling information and
material data are converted.

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