Program code Comment
N40 X12 Y-20 ; Travel on an inclined line to an end position specified with
Cartesian coordinates
N50 G0 Z100 M30 ; Retraction in rapid traverse for tool change
2.9.3 Travel commands with polar coordinates
2.9.3.1 Reference point of the polar coordinates (G110, G111, G112)
The point from which the dimensioning starts is called the pole.
The pole can be specified in Cartesian or polar coordinates.
The reference point for the pole coordinates is clearly defined with the G110 to G112
commands. Absolute or incremental dimension inputs therefore have no effect.
Syntax
G110/G111/G112 X… Y… Z…
G110/G111/G112 AP=… RP=…
Meaning
G110 ...: With the command G110, the following pole coordinates refer to the last position
reached.
G111 ...: With the command G111, the following pole coordinates refer to the zero point of
the current workpiece coordinate system.
G112 ...: With the command G112, the following pole coordinates refer to the last valid pole.
Note:
The commands G110...G112 must be programmed in a separate NC block.
X… Y… Z…: Specification of the pole in Cartesian coordinates
AP=… RP=…: Specification of the pole in polar coordinates
AP=…: Polar angle
Angle between the polar radius and the horizontal axis of the working
plane (e.g. X axis for G17). The positive direction of rotation runs coun‐
ter-clockwise.
Range of values: ± 0…360°
RP=…: Polar radius
The specification is always in absolute positive values in [mm] or [inch].
Note
It is possible to switch block-by-block in the NC program between polar and Cartesian
dimensions. It is possible to return directly to the Cartesian system by using Cartesian
coordinate identifiers (X..., Y..., Z...). The defined pole is moreover retained up to program end.
Fundamentals
2.9 Motion commands
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 173
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