Yaskawa YASNAC PC NC Programming Manual - Manual (Page 160)

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YASNAC PCNC Programming Manual Chapter 4: Enhanced Level Commands
Example of Programming
G91 G73X • • • Y • • • R-30. Z-55. I10. J1. K4. F • • • ;
Peck feed stroke
1st peck feed— 10 mm ? I10.
2nd peck feed— 9 mm
3rd peck feed— 8 mm
4th peck feed— 7 mm
5th peck feed— 6 mm
6th peck feed— 5 mm
7th peck feed— 4 mm ? K4.
8th peck feed— 4 mm
9th peck feed— 2 mm ? K’
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Total 55.00 mm ? -Z -55.
(b) Dwell at each peck feed
In a deep hole drilling cycle called by G73 or G83, load applied to a drill can be reduced
by giving dwell for a short time after reaching the bottom in each peck feed. Dwell time
can be set for parameter pm0401 or specified by address P.
• If peck dwell is specified in a program using address P, it supercedes the setting for
parameter pm0401. If a P command is not specified in a program, the setting for
parameter pm0401 (1 = 1ms) is used for peck dwell. If P0 is specified, the setting for
parameter pm0401 is used.
• Default value for dwell at the bottom of a hole can be set by using parameter pm0401.
• The setting for parameter pm0401 is disregarded by setting appropriate value for
parameter pm4017 D4. If pm0401 is disregarded, peck dwell is not executed unless a
P command is specified.
pm4017 D4 = 0 pm0401 Invalid
pm4017 D4 = 1 pm0401 Valid