
13. FUNCTIONS TO SIMPLIFY PROGRAMMING
13.1 Canned Cycles (G73, G74, G76, G78, G79, G80 to G89)
(Note 2)
Before the drilling axis can be changed, the canned cycle must be canceled.
The following description assumes that parameter FXY is set to 0 and the drilling axis is the first axis (X).
A canned cycle operation is specified with two continuous-state G codes.
(i) Data format
G90 Absolute command
G91 incremental command
(ii)
Codes G73 to G89 specifying drilling mode
See Table 13.1.
(Note 3) The initial level indicates the absolute position of the drilling axis when the system shifts from the
canned cycle canceled state to canned cycle mode.
(1)
Type of data
Fig. 13.1 (b) shows how to specify movement in X axis according to the mode
(G90 or G91).
G90 (Absolute Command)
v
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x=0
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4
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. R
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Q
I
0
i7
X
Point R
A
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I I
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Bottom point 0 ’
of the hole
i7
Absolute
Fig. 13.1 (b) Type of
Canned Cycle Data
(2)
Data for Canned Cycle
The drilling data can be specified following G73/G74/G76/G81 to G89 and a
single block can be formed.
This command permits the data to be stored in the control unit as a modal
value.
G91 (Incremental Command)
v
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:
t
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R
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or
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ir
Point R
I
A
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t
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X
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Bottom point 0
of the hole
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