Printed from Kezuriba (kezuriba.net/en/nc/m30/)

M30

Machining center, Lathe

Program end and rewind (end of tape)

⌨Format and notes

M30

Ends the program and returns to the top. The next start begins from the beginning
Whether the spindle and coolant stop after the end, and how modal information is reset, depends on the machine (Siemens ISO)
On Haas it is also linked to settings such as the part counter (Setting 2, 39, 56, 83, etc.)
Most M-codes are assigned by the machine builder (Siemens ISO: M00–M89 are defined by the machine tool builder). Always check the machine's operator's manual

The same code can be written or assigned differently depending on the CNC control and the machine builder. Always check your machine’s manual.

Source	Machine	Item	Detail
NIST	Machining center	Meaning	Pallet change + program endIn RS274/NGC, M30 is defined as including a pallet shuttle exchange

The meaning shown agrees in at least two sources (agreement confirmed). Explanations are written in our own words.

Mitsubishi Electric — The Basics of CNC Machining Programming (for Machining center) e-Learning material (PDF) mitsubishielectric.com
Mitsubishi Electric — The Basics of CNC Machining Programming (for Lathe) e-Learning material (PDF, BNP-C8027-688) mitsubishielectric.com
Siemens AG — SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D Programming Manual ISO Milling, 04.2007 Edition (6FC5398-7BP10-0BA0) cache.industry.siemens.com
Haas Automation, Inc. — Mill Operator's Manual – 18 Mill M-Codes (online version) haascnc.com
Haas Automation, Inc. — Lathe Operator's Manual – 17 Lathe M-Codes (online version) haascnc.com
National Institute of Standards and Technology (NIST), USA — The NIST RS274NGC Interpreter – Version 3 (NISTIR 6556, 2000) nvlpubs.nist.gov
Saitama University, Faculty of Engineering, Department of Mechanical Engineering, practical training — Machining center program 2019 (training NC program O19-0101, with comments) jisshu.mech.saitama-u.ac.jp