Fagor 8070 BL, Programming Manual

Page: 233 / 444

Programming manual.
CNC 8070
ADDITION
AL PREP
ARATORY FUNCTIONS
12.
Turn
Hi
rth axis on
a
nd off (G1
70/G1
71).
·233·
(R
EF
: 1709)
12.3 Turn Hirth axis on and off (G170/G171).
A Hirth axis is the one that can only be positioned at particular positions, multiple of its pitch
(parameter HPITCH). When a Hirth axis is not active, it behaves like a normal rotary or linear
axis and can reach any position. Hirth axes may be canceled and activated by program using
the following functions.
Programming. Activate a Hirth axis.
Program function G171, and then, the axes to be activated as Hirth and the order in which
they will be activated. Several axes may be programmed with this function.
Programming format.
The programming format is the following; the arguments appear between curly brackets.
G171 X..C{n_order}
Programming. Cancel a Hirth axis.
Program function G170, and then the Hirth axes to be deactivated and the order in which
they will be deactivated. Several axes may be programmed with this function.
Programming format.
The programming format is the following; the arguments appear between curly brackets.
G170 X..C{n_order}
Considerations.
• If when activating a Hirth axis, it is located in the wrong position, the CNC will issue a
warning so the operator can turn it to a correct position.
• A Hirth axis must always be positioned at positions multiple of its pitch. For these
positioning movements, the CNC takes into account the active zero offset (preset or zero
offset).
• Both linear and rotary axes may be Hirth. Only those axes defined as Hirth axes by the
OEM (parameter HIRTH) may be activated as Hirth axes.
Properties of the function and Influence of the reset, turning the
CNC off and of the M30 function.
Functions G170 and G171 are modal and incompatible with each other. On power-up, after
an M02 or M30 and after an emergency or a reset, the CNC activates all the Hirth axes.
G170 Hirth axes OFF.
G171 Hirth axes ON.
X..C{n_order}
Name of the axis and order number.
G171 B1 C2
(Activate B first and then C, as Hirth axis)
X..C{n_order}
Name of the axis and order number.
G170 B2 C1
(Deactivate the C axis first and then B)