Figure 4.1.1.8 commands of back boring cycle (g77) – Yaskawa YASNAC PC NC Programming Manual User Manual
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YASNAC PCNC Programming Manual
Chapter 4: Enhanced Level Commands
(b) Back boring command (G77)
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If addresses I or J are specified with address Q in the same block, addresses I and J are
disregarded.
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For the dwell at the bottom of a hole, the setting for pm0400 is given priority to the
commands specified in a program.
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Parameter pm0400 is valid if “pm4017 D3 = 1”.
•
Axis shift feedrate is set for parameter pm2864. If “pm2864 = 0”, feedrate specified
by an F command is used.
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Since address Q is modal, if a Q command is specified before I or J commands, these
commands are disregarded. To make I and J commands valid, specify them after can-
celing a canned cycle by G80.
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Programming for fixed shift distance
G77_X_ Y_ Z_ R_ Q_ L_ F_ P *_ W *_;
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Programming for variable shift distance;
G77_X_ Y_ Z_ R_ I_ J_ L_F_ P *_ W *_;
FIGURE 4.1.1.8 Commands of Back Boring Cycle (G77)