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\viewkind4\uc1\pard\qc\cf1\lang2057\b\f0\fs24 G99 Per Revolution Feed
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\par \cf2\b0\fs20 The G99 command allows a feedrate written in the units, millimetres per revolution or inches per revolution, to be entered into the machine controller. All subsequent feedrates are defined in the chosen units, after the original read-in of the command G99. If a change of feedrate is required within a program, only the F __ value needs to be entered.
\par The units used will depend on whether the machine is operating using metric or imperial measurements.
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\par A G99 feedrate command is written in the following format:
\par G99 F __ ;
\par where,
\par F __ is the feedrate, written in the format millimetres per revolution or inches per revolution.
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