Programming instructions
ADT-CNC4620 Programming Manual
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3. G Instruction
3.1. Introduction
G instruction consists of instruction address G and later 1~2 instruction values. It is used to regulate
the interpolation mode, pause function and coordinate setting of the tool relative to the workpiece.
G □□
Instruction value (00~99, first 0 can be omitted)
Instruction address G
G instruction word is divided into group 00, 01, 02, 03, and 04. In the same block, you can enter G
instruction words of different groups. If two or more G instruction words of same group are entered
in the same block, only the last G instruction word is valid. The G instruction words of different
groups without common parameter (instruction word) may be in the same block, and the functions
are valid simultaneously and are unrelated with the sequence. The system doesn’t support the G
instruction words not in this table, and will alarm if there is.
3.1.1. Modal, non-modal and initial state
The modal function is that a code is always valid once it is specified in current block, until
another code of the same group appears in the block, and it isn’t required to specify if this
instruction is used in next block.
The non-modal function is that a code is only valid in its block, and it should be specified
again if it is used in next block.
After the system is electrified, the mode G instruction word that is valid before the
function or state is executed is called initial G instruction word. If the initial G instruction
word is executed after electrified, it isn’t required to enter this G instruction word. The
initialized instruction word of the system is G01.
3.1.2. Relative definition
This manual has the following description:
Start point: the position when current block is running;
End point: the position after current block ends;
X: absolute coordinates of the end point in X direction;
U: difference between start point and end point in X absolute coordinates;
Z: absolute coordinates of the end point in Z direction;
W: difference between start point and end point in Z absolute coordinates;
F: cutting feeding speed
G instruction word list
Instruction word
Group Function Remakr
G00 Fast moving Initial G instruction
G01 Linear interpolation
G02
01
Arc interpolation (CW)
Modal G instruction