Enhanced Level Commands
4.1 Program support functions (1)
04.07
4-101
© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
Explanations
The spindle is stopped at the fixed rotation position when the bottom of the hole
has been reached.The tool is then moved in the direction opposite to the tool tip
and retracted.
GUD _ZSFR[0] can be used to enter a safety clearance.
The lift--off path can be specified using _ZSFR[5].
G17 G18
G19
_ZSFR[5] = 1 +X +Z +Y
_ZSFR[5] = 0 or 2 -- X -- Z -- Y
_ZSFR[5] = 3 +Y +X +Z
_ZSFR[5] = 4 -- Y -- X -- Z
The angle must be therefore be entered to GUD7 _ZSFR[2] such that the tool tip
points in the reverse direction for lift--off path after the spindle stop.
Limitations
Axis switching
The canned cycle must be canceled before the drilling axis can be changed.
Boring
Boring is not carried out in a block that does not contain X, Y, Z, R , or any additio-
nal axes.
Q/R
By all means, specify a positive value at address Q. The sign is ignored if address
Q is specified with a negative value. Q equal 0 is set whenever no lift--off amount is
programmed. This leads to cycle execution without lift--off.
Cancel
G codes of group 01 (G00 to G03) and G76 must not be specified within a single
block. Otherwise, G76 is canceled.
Tool offset
The tool offsets are ignored in the canned cycle mode.
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