What Is Preparatory Code

G-codes, also called preparatory codes, are any word in a CNC program that begins with the letter G. Generally it is a code telling the machine tool what type of action to perform, such as: Rapid movement (transport the tool as quickly as possible in between cuts) Controlled feed in a straight line or arc.

What is G61 code?

The G61 code is used to specify exact stop. Rapid and interpolated moves will decelerate to an exact stop before another block is processed.

What is G-code example?

Let’s take a look at a simple CNC milling example using these three main G-code commands, G00, G01 and G02. With the first G00 command, we quickly bring the machine from its home or initial position to the point B(5,5). … Once we reach the point C(5,25), we have another G01 command to reach the point D(25,25).