
B-63783EN-1/01 11.PROGRAM COMMAND
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11.6 CANNED CYCLE SPINDLE CONTROL
General
Canned cycles make it easier for the programmer to create programs.
With a canned cycle, a frequently-used machining operation can be
specified in a single block with a G function; without canned cycles,
normally more than one block is required. In addition, the use of
canned cycles can shorten the program to save memory.
For operation in a canned cycle, refer to the operator's manual. This
section explains those functions requiring spindle control.
- Types of spindle control
There are two types of canned cycles, as follows, depending on the
signals used for spindle control in a canned cycle:
Canned cycle I : Dedicated signals (such as SSP and SRV) are used.
Canned cycle II: Ordinary miscellaneous functions (such as M03 and
M05) are used.
The canned cycle type to be used is selected by bit 0 (FXB) of
parameter No. 6201.
Canned cycle
- Functions require spindle control
The following four functions require spindle control:
Table. 11.6 (a) Functions require spindle control for canned cycle I
G code Operation on the hole bottom Use
G74 Spindle CW
Left-hand tapping
G84 Spindle CCW
Tapping
G86 Spindle stop
Boring
G88 Dwell → spindle stop
Boring
NOTE
1 The fine boring cycle (G76) requires spindle
orientation. Since no special signals are provided
for spindle orientation, this cycle cannot be used in
canned cycle I.
2 G87 is used as an ordinary boring cycle; it is not
used as the back boring cycle that requires spindle
orientation. Therefore, spindle control is not
required in canned cycle I.