Siemens Sinumerik 840D sl Programming Manual page 100

Additional functions
4.1 Program supporting functions
Tapping
The drilling cycle is executed only if an axis motion, e.g. is programmed with X, Y, Z or R.
R
Always program R only in one block with an axis motion, otherwise the programmed values
are not stored modally.
Deselection
The G functions of Group 01 (G00 to G03) and G84 should not be used together in one
block, as otherwise G84 is deselected.
S command
An error message is displayed if the specified gear stage is one step higher than the
maximum permissible value.
F function
An error message is displayed if the value specified for the cutting feedrate exceeds the
maximum permissible value.
Unit of the F command
G94
G95
Example
Feedrate for the Z axis 1.000 mm/min
Spindle speed 1,000 rev/min
Thread lead 1.0 mm
<Programming as feedrate per minute>
S100 M3
G94
G00 X100.0 Y100.0
G84 Z-50.0 R-10.0 F1000
<Programming as revolutional feedrate>
G95
G98 Y-700.
100
Metric input Input in inch
1 mm/min 0.01 inch/min
0.01 mm/rev 0.0001 inch/rev
;Feedrate per minute
;Positioning
;Tapping without compensating chuck
; Rev. feedrate
;Positioning, drilled hole 6,
Remarks
Decimal point programming is
permitted
Decimal point programming is
permitted
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling