M-Series Operator’s Manual 4/9/15
Z ____ Specifies point Z in figure 1.
In incremental mode Z is measured from point R.
In absolute mode Z is the position of the hole bottom.
R ____ Specifies the distance to point R (figure 1) with an absolute or incremental value.
Q ____ Determines the cut-in depth for the G73 and G83 cycles.
Determines the thread lead for G74 and G84 if Rigid Tapping is enabled.
(In the case of Rigid Tapping Q is not modal)
P ____ Sets the dwell time at the bottom of the holes for G74, G82, G84, and G89 cycles. The dwell time is
measured in seconds (same as G04).
F ____ Sets the feed rate. Remains the feedrate even after G80 (cancel canned cycles).
K ____ Sets the number of repeats for drilling cycles. Operations 1 through 6 of figure 1 will be repeated K
number of times. If K is not specified K = 1. K is only useful when using incremental positioning mode (G91) and
is not retained from cycle to cycle. In absolute mode, K causes the drilling of the same hole in the same position K
times.
* NOTE: Canned cycles are modal and should be canceled with G80. However G00, G01, G02 and G03 will also
cause the cancellation of canned cycles. All parameters are stored until canned cycles are canceled except for the
hole position and K, which must be set each time the cycle is used. When G80 is issued the movement mode will
be the last one issued (G0, G1, G2, G3). Canned cycles will not be performed unless X and/or Y are specified.
When performing canned cycle operations, the distances can be either incremental or absolute, depending on the
current active mode (G90 = absolute, G91= incremental). Figure 2 illustrates canned cycle Z-axis distances in both
modes.
Figure 2: Canned Cycle Absolute and Incremental modes
* NOTE: In incremental mode the Z depth of the hole is measured from R, and R is measured from the initial tool
position.
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