FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

B–62754EN/01
20. AXIS CONTROL FUNCTION
PROGRAMMING
355
One of the following three two–path control modes can be selected:
1 B–axis control is executed for either tool post 1 or 2.
2 B–axis control is executed separately for tool posts 1 and 2.
3 Identical B–axis control is executed for tool posts 1 and 2.
The mode is selected according to the value specified for parameter 8250
for each tool post.
The following 13 G codes, and the M, S, and T codes of the miscellaneous
functions, can be used in a B–axis operation program:
Code Description
G00 Positioning (rapid traverse)
G01 Linear interpolation (cutting feed)
G04 Dwell
G28 Reference position return, automatic coordinate system setting
G80 Canned cycle, cancel
G81 Drilling cycle, spot drilling
G82 Drilling cycle, counterboring
G83 Peck drilling cycle
G84 Tapping cycle
G85 Boring cycle
G86 Boring cycle
G98 Feed per minute
G99 Feed per rotation
M** Auxiliary function
S** Auxiliary function
T** Auxiliary function, tool offset
G28 (reference position return)
Unlike the normal G28 cycle, the G28 cycle for a B–axis operation does
not include intermediate point processing. For example, the following
cannot be specified:
G28 B99.9;
G80 to G86 (canned drilling cycle)
Of the canned drilling cycles supported by the FANUC Series 16 or Series
18 for machining centers, those cycles equivalent to G80 to G86 can be
executed.
Data can be specified in the same way as for the FANUC Series 16 or
Series 18 for machining centers, except for the following points:
1. The drilling position is not specified with X and Y.
2. The distance from point R to the bottom of the hole is specified with
B.
Explanations
D Specifying two–path
control mode
D Codes that can be used
in a B–axis operation
program

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