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

20. AXIS CONTROL FUNCTION
B–62754EN/01
PROGRAMMING
354
Parameter 8251:
M code used to start operation of the first program
Parameter 8252:
M code used to start operation of the second program
Parameter 8253:
M code used to start operation of the third program
O1234 ;
M
** ;
M30 ;
To start an operation, the miscellaneous functions (M**) specified in
parameters 8251 to 8253 are used.
Example
01234 ;
G50 X100. Z200. ;
G101 ;
G00 B10. ;
M03 ;
G04 P2500 ;
G81 B20. R15. F500 ;
G28 ;
G100 ;
G00 X80. Z50. ;
G01 X45. F1000 ;
G00 X10. ;
M** ;
G01 Z30. F300 ;
M30 ;
to : Specify the B–axis operation program in blocks between
G101, G102, or G103 and G100. The program is registered
in program memory.
: Starts executing the B–axis operation registered with to above.
In subsequent blocks, the normal NC operation and the B–axis
operation are executed in parallel. An M code of the miscellaneous
function is used to start the B–axis operation. The M code, used to
start the operation, is specified in parameters 8251 to 8253.
Starts executing the registered B–axis operation. In
subsequent blocks, the normal NC program and the
B–axis operation program are executed in parallel.
(** is specified in parameters 8251 to 8253.)
Starts registering of an
operation program.
Blocks of the B–axis
operation program
Ends registering of the
operation program.
Command used to start the
programmed operation
G110 [operation command];
A single–motion operation for the B–axis can be specified and
executed as shown above. Such an operation need not be regis-
tered as a special (first to third) program. Nor does it need to be
by a special command, as described above.
D Command used to start
the operation
D Single–motion operation

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