Programming manual
40
CNC 8070
3.
COORDINATE SYSTEM
Plane selection (G17/G18/G19/G20)
(SOFT V02.0X)
30
Therefore, when selecting G17, G18 or G19, it means the following.
G17 Main plane formed by the first and second axes of the
channel. The perpendicular axis (helical) or longitudinal
axis corresponds to the third axis of the channel.
G18 Main plane formed by the third and first axes of the
channel. The perpendicular axis (helical) or longitudinal
axis corresponds to the second axis of the channel.
G19 Main plane formed by the second and third axes of the
channel. The perpendicular axis (helical) or longitudinal
axis corresponds to the first axis of the channel.
The perpendicular (helical) axis is the one onto which the helical
interpolations are carried out. Longitudinal axis is the one onto which
the tool length compensation is applied. When programming G17,
G18 and G19 the perpendicular and longitudinal axes are the same.
Main planes and axes
The main planes may be selected by program using functions G17,
G18 and G19. The main planes are defined by two of the first axes of
the channel. The third axis corresponds to the longitudinal axis which,
for functions G17, G18 and G19, coincides with the perpendicular
axis.
These functions may be programmed anywhere in the program and
they don't have to go alone in the block.
Properties of the functions
Functions G17, G18, G19 and G20 are modal and incompatible with
each other.
On power-up, after an M02 or M30 and after an EMERGENCY or a
RESET, the CNC assumes function G17 or G18 as set by the machine
manufacturer [G.M.P. "IPLANE"].
Circular interpolation in the main work planes.
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