ISO 4343:2000 産業用オートメーションシステム—機械の数値制御— NCプロセッサ出力—ポストプロセッサコマンド | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, 3.

Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

International Standard ISO 4343 was prepared by Technical Committee ISO/TC 184, Industrial automation systems and integration, Subcommittee SC 1, Physical device control.

This second edition cancels and replaces the first edition (ISO 4343:1978), which has been technically revised.

Annexes A and B form a normative part of this International Standard.

Introduction

The output of a general purpose numerical control processor is information used as input to a post processor. This information is called CLDATA, which was originally derived from “cutter location data.”

CLDATA provides a general language to pass manufacturing information from a numerical control processor to a post processor, where the general language is converted to the specific format required by the particular numerical control equipment. The logical and physical structure of CLDATA records are given in ISO 3592.

This International Standard defines a standard post processor vocabulary, in the context of command word and the parameters that can be associated with a command word. This vocabulary is encoded using the 2 000 class (“integer code type post processor command”) and 20 000 class (“literal type post processor command”) CLDATA records given in ISO 3592.

There is a one-to-one correspondence between the elements of the post processor vocabulary and the elements of the post processor command CLDATA records. The integer code numbers given in annex B of this International Standard are the code numbers that are used to represent keywords in the 2 000 class CLDATA records. The keyword names given in annex B of this International Standard are the names that are used to represent keywords in the 20 000 class CLDATA records.

Numerical control is applied to many types of machines, but the language defined in this International Standard has been developed primarily for numerically controlled machine tools – hence the words “tool” and “part” are used in the description of the language to indicate the working element and processed element respectively. Many of the vocabulary words are also derived from metal working terminology.

1 Scope

This International Standard defines the elements of a set of post processor statements to be used in numerical control software. These statements are encoded on 2 000 class and 20 000 class CLDATA records or their equivalent.

Each processor using one of the ISO numerical control programming languages shall be capable of producing post processor command type CLDATA records as defined in this International Standard.

Each post processor shall be capable of using the post processor command type CLDATA records defined in this international Standard as input.

This International Standard does not prescribe

• a) the mechanism by which the statements are processed;
• b) the medium on which the input language statements are recorded;
• c) the medium and format of output machine control data;
• d) the order of statements within a part program.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.