Programming instructions

ADT-CNC4620 Programming Manual

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2. M S F T Instruction

2.1. Auxiliary function (M code)

M instruction consists of instruction address M and later 1~2 digits, and is used to control the flow

of executing program or output signals to machine tool.

Instruction value (00~99, leading value can be omitted)

Instruction address

One block only contains one valid M instruction. If a block has two or more M instructions, the

last M instruction is valid.

If M instruction and the instruction word that executes moving function are in the same block, the

sequence follows:

① If M instruction is M00, M30, M98 and M99, execute M instruction after moving;

② When M instruction outputs signal to the machine tool, execute M instruction while moving.

M Instructions List

Instruction Function Remark

M00 Program pauses

M30 Program ends

M98 Subroutine calling

M99 Return from subroutine

State isn’t retained

M03 Principal axis forward rotation

M04 Principal axis reverse rotation

*M05 Principal axis stop