Siemens Sinumerik 840D sl Programming Manual page 83

Q/R
Always program Q and R only in one block with a retracting movement, otherwise the
programmed values are not stored modally.
Only one positive value is to be specified in each case for the value of Address Q. If a
negative value is specified for Q, the sign is ignored. Q is set as equal to "0" if no lift-off path
is programmed. In this case, the cycle is executed without lifting.
Deselection
The G functions of Group 01 (G00 to G03) and G76 should not be used together in one
block, as otherwise G76 is deselected.
Example
M3 S300
G90 G0 Z100
G90 G99 G76 X200. Y-150. Z-100.
R50. Q10. P1000 F150.
Y-500.
Y-700.
X950.
Y-500.
G98 Y-700.
G80
G28 G91 X0 Y0 Z0
M5
ISO Milling
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
;Rotary motion of stem
;Positioning, drilling of drilled hole 1,
;then return to point R and
;for 1 s stop at the bottom of a hole
;Positioning, drilled hole 2,
;then return to point R
;Positioning, drilled hole 3,
;then return to point R
;Positioning, drilled hole 4,
;then return to point R
;Positioning, drilled hole 5,
;then return to point R
;Positioning, drilled hole 6,
;then return to initial plane
;Deselection of the fixed cycle
;Return to reference position
;Spindle stop
Additional functions
4.1 Program supporting functions
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