Programming instructions

NC Programming 17VRS Motion Blocks
4-1
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
4 Motion Blocks
4.1 Axes
Linear Main Axes
The linear main axes span a Cartesian coordinate system.
They are identified by means of axis names:
•
1st linear main axis (symbol: X)
•
2nd linear main axis (symbol: Y)
•
3rd linear main axis (symbol: Z)
The axis name (address of the axis as it is to be addressed in the NC-
program) is freely configurable; however, the
meaning
of the axis is de-
fined by the position of the axis in the coordinate system (see Fig. 4-1). In
the CNC the axes are permanently assigned to specific processes; how-
ever, they can be switched to other processes (see chapter 11, "NC Spe-
cial Functions"). An axis cannot be addressed simultaneously in more
than one process.
Circular interpolations and the tool radius path correction can only be
performed within the machining planes spanned by the linear main axes
(G17, G18, G19).
Rotary Main Axes
Rotary main axes rotate about the linear main axes.
The axis meanings:
•
1st rotary main axis (symbol: A)
•
2nd rotary main axis (symbol: B)
•
3rd rotary main axis (symbol: C)
indicate which coordinate axis the respective rotary main axis rotates
about (
see Fig. 4-1
). The axis name (the address of the axis) is freely
configurable; however, the axis meaning is defined by the position of the
axis in the coordinate system. With absolute positioning (G90) the trav-
erse range is
±
360.000 degrees. With absolute positioning (G90) the
position which is programmed in an absolute statement is traversed to
over the shortest possible path. With incremental positioning (G91) the
traverse range is
±
999999.9999 degrees or
±
99999.99999 degrees
(depending on the parameter setting). The sign indicates the traverse di-
rection.