Enhanced Level Commands
4.1 Program support functions (1)
04.07
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© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
Operation 1
Operation 2 Operation 6
Initial level
Operation 5
Operation 3
Point R level
Operation 4
Rapid traverse
Feed
Fig. 4-2 Canned cycle operation sequence
In this chapter the term drilling will only be used to refer to operations implemented
with canned cycles, although canned cycles encompass tapping and boring cycles
as well as drilling cycles.
Plane definition
In the drilling cycles, it is generally assumed that the current workpiece coordinate
system in which the machining operation is to be performed is defined by selecting
plane G17, G18, or G19 and activating a programmable workpiece offset. The dril-
ling axis is always the applicate of this coordinate system.
A tool length compensation must be s elected before the cycle is called. Its effect is
always perpendicular to the selected plane and remains active even after the end
of the cycle.
Table 4-4 Positioning plane and drilling axis
G code
Positioning plane Drilling axis
G17 Xp--Yp plane Zp
G18 Zp--Xp plane Yp
G19 Yp--Zp plane Xp
Xp: X axis or an axis parallel to the X axis
Yp: Y axis or an axis parallel to the Y axis
Zp: Z axis or an axis parallel to the Z axis
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