The standard contains the standardisation of key numbers for preparatory and miscellaneous functions (G- and M-functions) for the programming of numerical controlled machines.
DIN 66025-2:1988 history
1988DIN 66025-2:1988 Industrial automation; numerical control of machines; format, preparatory and miscellaneous functions
1970DIN 66025-2:1983 Industrial automation; numerical control of machines; format, preparatory and miscellaneous functions
1970DIN 66025-2:1973 Industrial automation; numerical control of machines; format, preparatory and miscellaneous functions