MIL-B-80272
gram data entered into program memory shall be automatically acted upon, in
the sequence designated, whenever the part program is cycled.
A feed rate override control shall be
3.4.10.5.8
Feed rate override.
provided to allow manual adjustment of the programmed feed rate from zero to
not less than 120 percent of the programmed rate in either continuous
adjustment or in steps of not more than 10 percent.
A spindle speed override shall be
Spindle speed override.
3.4.10.5.9
provided to allow manual adjustment of spindle speed in either continuous
The spindle
adjustment or in steps of not greater than 10 percent each.
speed override control shall control not less than the range of override
percentages between 60 and 120 percent of programmed speeds.
The control shall be capable of producing
Mirror image.
3.4.10.5.10
either right- or left-hand parts from the same tape data through the inver-
sion of X and Y axes. Inversion of each axis shall be by keyboard or switch
entry. Mirror image shall not affect the directional sense of manual con-
trols. Reverse settings shall be displayed on the data display.
3.4.10.5.11
Axis jog. The control panel or pendant shall have manual
controls for accomplishing both single and continuous, low and high speed
jog movements of the slides for each controlled axis in both the plus and
minus directions.
3.4.10.5.12 Reference zero. The control unit shall have a reference zero
to move each axis to a reference limit switch to establish synchronization
and reset all registers to zero.
3.4.10.5.13 Tape tryout. The control shall have a tape tryout feature to
permit new part programs to be read through the control without machine
motions.
The control unit shall have a con-
3.4.10.5.14 Operator control panel.
trol panel which provides, unless otherwise specified (see 6.2.1), at least
Emergency Stop; Cycle Start; Optional
the following control functions:
Stop; Mode Selection; Feed Hold; Feedrate Override; Spindle Speed Override;
Jog; Jog Direction; and EOF Stop.
3.4.10.6 Miscellaneous control requirements.
Part program memory loadable from the
3.4.10.6.1 Part program storage.
data input media shall be provided. Unless otherwise specified (see 6.2.1),
the part program memory shall be capable of storing not less than 100 feet
of postprocessed part program tape.
Unless otherwise specified (see
Standby battery power.
3.4.10.6.2
6.2.1), standby battery power shall be provided for controls having volatile
memory, to hold the size memory provided at full load for a period of not
less than 72 hours when the primary power source fails.
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