CNC Programming: workpiece program is composed of a series of instruction which wrote by special language of CNC system (the most popular code is ISO code, Regulated by international organization for standardization), CNC system convert workpiece program into controlling action to machine. The most popular memory medium is FLASH memorizer.
Program Block：It is a complete command line consisted of instruction block and data block.
Program：It is a congregation of program block according to machining logic structure in order to complete the machining of workpiece. A workpiece program is composed of umpteen program block that comply with definite structure, syntax and format and a program block is composed of umpteen instruction characters as following.