MIL-B-80272
3.4.10.4.5
Lead error compensation.
Lead error compensation software
shall be provided to permit compensating for the lead errors of each axis
ball screw.
3.4.10.4.6 Auxiliary functions.
Unless otherwise specified (see 6.2.1),
the MCU shall respond to the following program command auxiliary functions:
interpolation, fixed cycles, and dwell.
Unless otherwise specified (see
6.2.1), miscellaneous function shall include program stop, optional program
stop, end of program, spindle CW, spindle CCW, spindle off, coolant on-off,
tool change, end of program (rewind), and program restart.
System prepara-
tory and miscellaneous functions shall be coded in accordance with EIA
RS-274.
3.4.10.5 Operator interface and controls.
3.4.10.5.1 Data display. A cathode ray tube (CRT) capable of displaying
at least 250 characters simultaneously shall be provided.
Unless otherwise
specified (see 6.2.1), the display shall, as a minimum, display the follow-
ing data:
a.
Four digit block sequence number.
Active block of stored data.
b.
c.
Actual position of each axis (may be a LED display on the control
unit).
d.
Control and system error messages.
3.4.10.5.2 Control system modes of operation.
The operational modes of
the NC control shall include manual, automatic, single block, manual data
input, sequence number search, and optional stop.
3.4.10.5.3 Manual data input. A manual data input (MDI) unit shall be
furnished to permit manual entry of alphabetical, numerical, and special
characters necessary for control of all programmable machine functions. The
manually input data shall be immediately displayed on the data display to
permit data verification. The MDI shall be capable of entering a block of
data into memory upon command.
3.4.10.5.4 Block delete.
The control shall have a block delete feature
to permit by-passing of blocks of programmed data.
3.4.10.5.5 Block-by-block read.
The control shall have block-by-block
read function to provide for reading information one block at a time.
3.4.10.5.6 Sequence number search. The control shall have the capability
to permit the operator to search for any desired sequenced number.
3.4.10.5.7 Part program edit.
A program edit capability shall be pro-
vided to allow block insertion, deletion or modification of any part program
in the part program memory.
Data related to part program edit shall be
input by the manual data input provided on the control panel.
Edited pro-
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