Siemens sinumerik 808d Programming And Operating Manual page 131

The value for the thread lead can be defined either as the thread size (for metric threads
between M3 and M48 only) or as a value (distance from one thread turn to the next as a
numerical value). The parameter not required in each case is omitted in the call or is
assigned the value zero.
If the two lead parameters have conflicting values, alarm 61001 "Thread lead wrong" is
generated by the cycle and cycle execution is interrupted.
Note
Depending on the settings in machine data MD30200 $MA_NUM_ENCS, the cycle selects
whether tapping is to be performed with or without encoder.
The direction of rotation for the spindle must be programmed with M3 or M4.
In thread blocks with G63, the values of the feedrate override switch and spindle speed
override switch are frozen to 100%.
A longer compensating chuck is usually required for tapping without encoder.
AXN (tool axis)
The following figure presents the options for the drilling axes to be selected.
With G18:
● AXN=1 ;Corresponds to Z
● AXN=2 ;Corresponds to X
● AXN=3 ;Corresponds to Y (if Y axis is present)
Using AXN (number of the drilling axis) to program the drilling axis enables the drilling axis to
be directly programmed.
AXN=1
AXN=2
AXN=3
Turning Part 2: Programming (Siemens instructions)
Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
1st axis of the plane
2nd axis of the plane
3rd axis of the plane
Cycles
2.4 Drilling cycles
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