Printed from Kezuriba (kezuriba.net/en/nc/g61/)

G61

Machining center, LatheModal, group 15

Exact stop mode

⌨Format and notes

G61

Decelerates and stops at the end point of every following block. Corners are accurate but cycle time increases
Cancel with G64

Diagram: Corner motion: exact stop and cutting mode

G61 decelerates and stops at the end of every following block, so corners are accurate but cycle time increases. Cancel with G64.

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	G61 = exact path mode, G61.1 = exact stop modeRS274/NGC separates G61 and G61.1. The group number is also 13

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

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. — G-code, M-code, and Setting (per-code explanation pages) haascnc.com
Haas Automation, Inc. — Mill Operator's Manual – 17 Mill G-Codes (online version) haascnc.com
Haas Automation, Inc. — Lathe Operator's Manual – 16 Lathe G-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