R-point level return in fixed cycles

Q: What does Mazak G-code G99 do?

G99 — R-point level return in fixed cycles on the MAZATROL SmoothX control (INTEGREX e-670H). Commands G98 or G99 can be used to select whether the return level of the final sequence during fixed-cycle operation is to be set at R-point or at the initial point of machining.

Machine-specific. This G-code reference is specific to the Mazak INTEGREX e-670H / e-670H-S with the MAZATROL SmoothX control (EIA/ISO programming manual H747PB0030E). G-code availability depends on fitted options, and groups and behaviour differ between Mazak models and control generations — verify against the manual for your own machine before programming with any code.

What it does

Commands G98 or G99 can be used to select whether the return level of the final sequence during fixed-cycle operation is to be set at R-point or at the initial point of machining.

G99 is modal (group 10) — it stays in effect until another code of the same group replaces it.

Address words

G98: Initial point level return
G99: R-point level return

Notes & precautions

In order that it may function correctly, do not give a command of fixed cycle for turning

Source

Mazak PROGRAMMING MANUAL for EIA/ISO PROGRAM, manual H747PB0030E, section 13-4 Initial Point and R-Point Level Return: G98 and G99, p. 3-11, 13-44. Reference and explanation only — not a reproduction of the manual.

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