5238-E P-246
SECTION 9 CONTOUR GENERATION
•
In the G101, G102, and G103 mode, the direction of C-axis rotation is determined by the control
according to the programmed shape, regardless of M15 or M16.
•
An alarm occurs if a C-axis command is designated in the M109 or M147 mode.
•
In the G102 or G103 mode, two arcs, satisfying the start and end points and arc radius L, are
obtained. The control selects the arc with a center angle of less than 180
°
. This means an arc
having a center angle of larger than 180
°
cannot be machined with a single block of commands.
In this kind of case, divide the arc to make a program.
If the G102 or G103 block does not contain an L command, the L value is not positive, or L is
too small to define an arc, an alarm occurs.
•
In the G102 or G103 mode, Z-axis control is not possible.
An alarm occurs if a Z-axis command is specified.
•
To carry out the contour generation machining with the cutter radius compensation function ON,
program the final shape. To carry out the contour generation machining with the cutter radius
compensation function OFF, program the cutter center paths.
•
To give the face contour generation machining commands, the X-axis must be at a position
greater than "0" in the program coordinate system. An alarm occurs if the face contour
generation machining commands are specified although the X-axis is at a position not greater
than "0" and an alarm occurs.
