2972 International Standard (ISO INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAA OPTAHM3AuMA nO CTAHAAPTM3AUWMORGANISATION INTE RNATIONALE DE NORMALISATION Numerical control of machines - Symbols Commande numerique des machines - Symboles Second edition --- 1979-08-15 UDC 681.323 : 621.9-52 : 003.62 Ref. No. 1SO 2972-1979 (E) Descriptors : data processing, numerical control, machine tools, symbolis. Price based on 13 pages vided by IHS d without license from IHS Not for Resale FOREWORD IsO (International Organization for Standardization) is a worldwide federation of national standards institutes (IsO member bodies). The work of developing International Standard is carried out through IsO technical committees. Every member body interested in a subject for which a technical committee has been set up 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. Draft International Standard adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IsO Council. Standard ISO 2972 was developed by Technical International Committee ISO/TC 97, Computers informationprocessing. The and first edition (IS0 2972-1974) had been approved by the member bodies of the foliowing countries : Australia Germany, F. R. South Africa, Rep. of Belgium India Sweden Brazil Ireland Switzerland Thailand Bulgaria Japan New Zealand Czechoslovakia Turkey Denmark Poland United Kingdom France Romania The member bodies of the following countries had expressed disapproval of the document on technical grounds : Italy USA This second edition, which supersedes Is0 2972-1974, incorporates clauses 4.53 to 4.70, which were the subject of draft Addendum 1, and which were circulated to the member bodies in July 1977. This draft addendum has been approved by the member bodies of the following countries : Australia ueder South Africa, Rep. of Belgium Mexico Spain Czechoslovakia Netheriands Switzerland France New Zealand USA Germany, F. R. Poland USSR Italy Romania Yugoslavia The member body of the following country expressed disapproval of the document on technical grounds : United Kingdom @ International Organization for Standardization, 1979 Printed in Switzerland Copyright Intermational Organization for Standardization d without license from IHS Not for Resale ISO 2972-1979 (E) INTERNATIONAL STANDARD Numerical control of machines -. Symbols BASIC SYMBOLS 1 SCOPE AND FIELD OF APPLICATION 3 This International Standard specifies a standard range of Many of the symbols standardized in clause 4 are made up from certain basic symbols which are used repeatedly and symbols for the identification and display of control functions on numerically controlled (N.C.) machine tools. consistently as the basis for symbols for related sets of Thesymbols represented here are specific to N.C. functions. applications. Conventional machine tool functions of any The arrow is one such symbol and deserves special practical system also need to be identified, and the consideration. It rarely appears on its own and is frequently appropriate symbols shall be chosen in accordance with ISO/R 369. meaning. There are two different applications of the arrow and a different form is used in each instance. In addition to the arrow, N.C. applications require certain other symbols which are used as a basis for the general range. 2 REFERENCE The basic symbols shown overleaf are used repeatedly and iSO/R 369, Symbols for indications appearing on machine consistently as the basis for symbols for related sets of tools. functions. 1 Copyright International Organization for Standardization ted without license from IHS Not for Resale