
B–63510EN/01
4. DESCRIPTION OF PARAMETERS
177
#7
5450
#6 #5 #4 #3 #2 #1
AFC
#0
[Data type] Bit type
AFC In polar coordinate interpolation mode, automatic override operation and
automatic feedrate clamp operation are:
0 : Not performed.
1 : Performed.
NOTE
In polar coordinate interpolation mode, the feedrate
component for a rotational axis increases as the tool moves
closer to the center of a workpiece. Near the center of a
workpiece, the maximum cutting feedrate (parameter
No.5462) may be exceeded, causing servo alarm No.411 to
be issued. The automatic feedrate override function and
automatic feedrate clamp function automatically control the
feedrate to prevent the feedrate component on a rotation
axis from exceeding a specified maximum cutting feedrate.
5460
Axis (linear axis) specification for polar coordinate interpolation
5461
Axis (rotary axis) specification for polar coordinate interpolarion
[Data type] Byte
[Valid data range] 1, 2, 3, ... control axes count
These parameters set control axis numbers of linear and rotary axes to
execute polar interpolation.
5462
Maximum cutting feedrate during polar coordinate interpolation
[Data type] 2–word
Valid data range
Increment system Unit of data
IS–B IS–C
Millimeter machine 1 mm/min 0, 6 to 240000 0, 6 to 100000
Inch machine 0.1 inch/min 0, 6 to 96000 0, 6 to 48000
Rotation axis 1 deg/min 0, 6 to 240000 0, 6 to 100000
This parameter sets the upper limit of the cutting feedrate that is effective
during polar coordinate interpolation. If a feedrate greater than the
maximum feedrate is specified during polar coordinate interpolation, it is
clamped to the feedrate specified by the parameter. When the setting is 0,
the feedrate during polar coordinate interpolation is clamped to the
maximum cutting feedrate usually specified with parameter 1422.
4.20
PARAMETERS OF
POLAR COORDINATE
INTERPOLATION
[Unit of data]
[Valid data range]