MIL-P-80054D
3.4.11.7 Automatic tape code recognition. The control shall automatically
recognize and read tape punched with either EIA RS-244 or RS-358 (ASCII)
character codes.
The control system shall provide
3.4.11.8 Switchable inch/metric input.
switchable inch-metric Input capability.
3.4.11.9 Part program storage. The machine control unit shall be capable
of storing in memory the content of not less than 150 feet of postprocessed
part program tape data.
3.4.11.10 Standby battery power. Unless nonvolatile part program memory is
provided, standby battery power shall be provided to hold the size memory
provided at full load for a period of not less than 72 hours when the primary
power source fails.
3.4.11.11 Part program edit. A program edit capability shall be provided
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
MDI provided on the control panel. Edited program data entered into program
memory shall be automatically acted upon, in the sequence designated, whenever
the part program is cycled.
control
3.4.11.12 Contouring feed rate override. A feed rate override
.
shall be provided to allow manual adjustment of the programmed feed rate from
zero to not less than 100 percent of-the programmed rate in either continuous
adjustment or in steps of not more than 25 percent. The feed rate override
control shall have a position that allows return of feed rate to that
programed.
3.4.11.13 Sequence number search. The control shall have the capability to
permit the operator to search for any desired sequence number.
3.4.11.14 Mirror image. When specified (see 6.2.1), the machine shall be
capable of producing either right or left-hand parts from the same tape data
through the use of inversion switches for each axis. Inversion of each axis
may be by keyboard entry.
3.4.11.15 Preparatory function (G-Codes). The preparatory function codes
of the control shall be in accordance with EIA Standard RS-274.
function
3.4.11.16 Miscellaneous functions (M-Codes). The miscellaneous
codes of the control shall be in accordance with EIA Standard RS-274.
3.4.11.17 Block delete. The control shall have a block delete feature to
permit by-passing
locks of programmed data.
3.4.11.18 Buffer storage. The control shall have buffer storage for trans-
ferring command data from the tape reader to internal storage without delaying
the next incoming command and without interrupting the machine functions. The
internal storage shall delay or store multiple blocks of data until required
by the controlling devices.
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