7. The operator’s manual and programming manual
supplied with a CNC unit provide an overall description of
the machine’s functions, including any optional functions.
Note that the optional functions will vary from one
machine model to another. Therefore, some functions
described in the manuals may not actually be available for
a particular model. Check the specification of the
machine if in doubt.
8. Some functions may have been implemented at the
request of the machine–tool builder. When using such
functions, refer to the manual supplied by the
machine–tool builder for details of their use and any
Programs, parameters, and macro variables are stored in
nonvolatile memory in the CNC unit. Usually, they are retained
even if the power is turned off. Such data may be deleted
inadvertently, however, or it may prove necessary to delete all
data from nonvolatile memory as part of error recovery.
To guard against the occurrence of the above, and assure
quick restoration of deleted data, backup all vital data, and
keep the backup copy in a safe place.