The CNC machine tool must input the instruction codes representing various functions into the CNC device in the form of a program, and the CNC device performs arithmetic processing, and then sends out pulse signals to control the operation of the various moving parts of the CNC machine tool to complete the cutting process of the parts.
At present, there are two standards for CNC programs: ISO of the International Organization for Standardization and EIA of the American Electronics Industry Association. my country adopts the ISO code.