ISO 4342:1985 Preview
Numerical control of machines -- NC processor input -- Basic part program reference language
This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
Defines a higher-level symbolic part-programming language which is processed by a digital computer to produce a NC machine program. Annex A gives rules for representing the RL on punched cards; annex B contains syntax description on the reference language; a list of recommended synonyms is given in annex C; annex D includes an alphabetical list of major words and locations.
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