A block is a continuous block that can be processed as a unit. It is actually a program in a CNC machining program. The body of the part program consists of several blocks. Most of the blocks are used to instruct the machine to complete or perform an action. The block is composed of a size word, a non-size word and a block end instruction. When writing and printing, each block generally occupies one line, as well as when the program is displayed on the screen.

