
4 - 92 ISNC G Codes
704-0115-307
WinMax Lathe NC Programming
G98 - Return to Initial Level (default)
When G98 is active, all G81-G89 drill cycles command the tool to return to the Z axis
coordinate where the tool was when the cycle was initiated. If the initial Z coordinate is
changed for subsequent cycles, the Z coordinate for the first cycle after G80 - Canned
Cycle Cancel (default) is used as the reference plane.
Default—Yes
Modal—Yes
Cancels G99 - Return to R Point Level
Examples
In the following example, the tool will rapid to Z10 in the second block even though Z20
(init plane) is specified:
N005 G98
N010 G00 Z10
N020 G81 Z5 F60 (feed to Z5, rapid to Z10)
N030 G00 Z20
N040 G81 Z15 (rapid to Z10, feed up to Z15, rapid to Z10)
N050 G80
In the following example, to return to the init plane, G98 requires a G80 Cancel Drill
Cycle to change to the init plane.
N005 G98
N010 G0 Z10
N020 G81 Z5 F60 (feed to Z5, rapid to Z10)
N030 G80 Z20
N040 G81 Z15 (rapid to Z10, feed up to Z15, rapid to Z20)
N050 G80
Figure 4–36. G98 Drill Cycle Initial Level Return (default)
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Страница 20: ...xx Programming and Operation Information 704 0115 307 WinMax Lathe NC Programming...
Страница 98: ...2 50 Basic NC G Codes 704 0115 307 WinMax Lathe NC Programming...
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