Yaskawa YASNAC PC NC Programming Manual - Manual (Page 68)

3 - 18
YASNAC PCNC Programming Manual Chapter 3: Movement Control Commands
3.1.7 Plane Selection (G17, G18, G19)
The plane where circular interpolation, tool radius offset, and coordinate system rotation are exe-
cuted is selected by specifying the following G code.
Table 3.1.7.1 Plane Selection G Codes
A plane is defined in the following manner (in the case of X Y plane):
The horizontal axis in the first quadrant is “+X-axis” and the vertical axis in the same quadrant
“+Y-axis”.
• When the power is turned ON, the XY plane (G17) is selected.
• Axis move command of a single axis can be specified independent of the selection of
plane by G 17, G18, and G 19. For example, the Z-axis can be moved by specifying “G17
Z • • •;”.
• Execution of a canned cycle is possible only in the G17 plane (hole machining axis: Z-
axis).
• If the 4th-axis * is selected, the following planes are added.
G17: XY plane or Xa plane
G18: ZX plane or Za plane
G19: YZ plane or Ya plane
• If the 5th-axis * is selected, the following planes are added.
G17: XY plane or Xb plane
G18: ZX plane of Zb plane
G19: YZ plane or Yb plane
• The plane on which the tool radius offset is executed by the G41 or G42 command is
determined by the designation of G 17, G18 or G 19; the plane that includes the rotary 4th-
or 5th-axis cannot be selected as the offset plane.
G code Function Group
G17 XY plane 02
G18 ZX plane 02
G19 YZ plane 02