Travel Commands With Polar Coordinates; Reference Point Of The Polar Coordinates (G110, G111, G112) - Siemens SINUMERIK 840D sl Programming Manual

9.3

Travel commands with polar coordinates

9.3.1

Reference point of the polar coordinates (G110, G111, G112)

Function
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=...
Significance
G110 ...:
G111 ...:
G112 ...:
X... Y... Z...:
AP=... RP=...:
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
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
With the command G110, the following pole coordinates refer to the last
position reached.
With the command G111, the following pole coordinates refer to the zero
point of the current workpiece coordinate system.
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.
Specification of the pole in Cartesian coordinates
Specification of the pole in polar coordinates
Polar angle
AP=...:
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 counterclockwise.
Range of values: ± 0...360°
Polar radius
RP=...:
The specification is always in absolute positive values in [mm]
or [inch].
9.3 Travel commands with polar coordinates
Motion commands
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