G codes

G codes are codes for program in Machine Milling and Machine EDM. G codes included code

G codes are broadly divided into two types:

1) One-shot G codes, which are valid only in the block in which they are specified.

2) Modal G codes, which remain valid until G code in the same group is specified.

Example : Modal codes

G00 X100;(G00 remains valid for these blocks)
Y100;
Z100;
C000 G01 X100; (G01 is valid from this point onward)

The G codes are classified into the groups as shown in the following pages.