CNC Z32 - Programming guide (Milling machines) 2.11.2 Linear interpolation (G1)
ZY Up to five axes can be simultaneously programmed. The trajectory followed by the axis group to reach the programmed end point is linear: all programmed axes arrive together to the programmed point. The velocity in G1 mode is defined through the programmed feed (address F).
G1 X..Y..Z.. X Warning : programming only G1 on a line (without positions) is allowed, but it has a special meaning (OPEN linear move, see the chapter describing the profile programming) and doesn’t have the purpose to prepare for a G1 movement. Example: ... N10 G1 N11 X0 Y0 ... not allowed: block 11 issues the error CN3414 2.11.3 Circular interpolation (G2 – G3)
G2 The functions G2 and G3 specify clockwise circular interpolation (G2) or counterclockwise circular interpolation (G3). The movement must be programmed on the first two axes of the contouring plane, defined with the G25. The circular interpolation must be preceded by a positioning on the circle starting point. The movement velocity corresponds to the programmed F (feed) value.The circular interpolation programming happens through: - G2 or G3 which defines the interpolation direction - The circle end point coordinates - The circle center point coordinates indicated by the address
X,Y I for the first axis of the contouring plane, and address J for the second axis. Example:
XYI,JX,YG3I,JYX G2 X..Y..I..J.. Warning : If the contouring plane is different from XY plane, but is for instance the ZX plane, the syntax becomes: G3 Z.. X.. I.. J.. where “I” indicates the first axis of the contouring plane (Z) and “J” the second axis (X) 2.11.4 Helical interpolation (G12 – G13) The function G12 allow the execution of helical interpolations. The function G13 disables this mode. The position programmed for the third axis is reached at end movement, together with the two axes of the plane. The velocity when G12 is active is the programmed F value. G12 can be activated also if the radius correction is active (G41 or G42 active): it thus allow the motion of the third axis, always coordinated with that of the first two. G12 may remain active, in radius correction mode, also in shortened or deleted segments.

19