Re: [CAD_CAM_EDM_DRO] canned cycles was EMC interpreter was Re: BoBCad Question

Ballendo, Some state of the art controls offer M200 series for
macros, and M400 series for "miscellaneous" stuff. I currently
started using G112 and G113 for interpolation on spindle "C" axis.

Gaffer

>Art,
>
>This may help you understand canned cycles:
>
>On the old NC (no computer, therefore no C) control was by tape with
>punched holes. The tape was run through a reader for each run/part.
>Operator/programmers soon found that they were repeatedly using the
>same set of instructions (when boring a hole, for example). They made
>sections of tape containing these commonly used cycles, and spliced
>the short sections of tape into the program as needed. Since the tape
>was paper, these short pieces of tape were kept in cans to prevent
>moisture from ruining them. So, "canned" cycles. The first OOP
>(object oriented programming) :-)
>
>Later, programs to be run many times were put onto plastic tape, for
>durability, but this was expensive, and paper tape machines were
>still seen in the late 70's.
>
>So, the answer is that a canned cycle is a set of instructions which
>can be called at any time, and has certain properties and parameters
>(similar to a programming object). There ARE "standard" canned cycles
>for drilling/boring/ etc. , but mfrs can create ANY canned cycle they
>feel will be helpful to their customers.
>
>The "standard" canned cycles are from G80 to G89. Many controll mfrs.
>use the G70's for add-on canned cycles... (pocket milling, for
>example)
>
>Hope this helps.
>
>Ballendo
>
>
>
>--- In CAD_CAM_EDM_DRO@y..., "Fred Smith" <imserv@v...> wrote:
>> >Do
>> > I understand correctly, that a Canned Cycle is a subroutine by
>> another name,
>> > or is a canned cycle limited in its application?
>> > Art F
>>
>>
>> A canned cycle is NOT a subroutine. A subroutine involves
>> redirecting the serial execution of a CNC program, they are
>nestable, and can have multiple repetitions.
>>
>> A canned cycle is a valid word address, the same as G01, G02, G00,
>> etc. It is executed in sequential order the same as any other G-
>code.
>>
>>
>> Best Regards,
>>
>> Fred Smith
>> IMService
>
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