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Document GEIA 274-D is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
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GEIA 274-D Document Information:
Title
Interchangeable Variable Block Data Format for Positioning, Contouring, and Contouring/Positioning Numerically Controlled Machines
Government Electronics & Information Technology Association
Publication Date:
Jan 1, 1979
Scope:
This standard is intended to serve as a guide in the coordination of
system design, to minimize the variety of program manuscripts required, to
promote uniformity of programming techniques, and to foster interchangeability
of input data between numerically controlled machines of the same
classification by type, process function, size, and accuracy. It is intended
that simple numerically controlled machines be programmed using a simple
format, which is systematically expandable for more complex machines.
This standard applies wherever a variable block data format is used with
numerically controlled machines.
The variable block data format, as described in the following sections, may be
used interchangeably among numerically controlled machines with compatible
input media and which conform to the same Format Classification as shown in
Appendix A. (NOTE: The degree of interchangeability will depend on the
conformity of the machines with respect to function, capacity, range,
horsepower, geometric relationship of axes, preparatory, miscellaneous, and
tooling functions, and use of absolute or incremental dimensions.)
If perforated tape is used as the input medium, it shall be in accordance with
EIA Automation Bulletin 3C "Glossary of Terms for Numerically Controlled
Machines"
The definition of terms used in this standard are in accordance with EIA
Automation Bulletin 3C "Glossary of Terms for Numerically Controlled
Machines."
Axis and motion nomenclature used in this standard is in accordance with EIA
Standard RS-267-A "Axis and Motion Nomenclature for Numerically Controlled
Machines."
Revisions to these standards will be proposed as technical progress warrants
or as future standards are adopted which conflict with these standards.
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