HEIDENHAIN ND 1300 VED and Crosshair Systems - Manual (Page 308)

288 QC-300 Series User’s Guide
Specifying linear and nonlinear joystick motion control
The axis velocity controlled by the joystick is changed from linear to varying degrees of exponential by
entering values into the axis Expo% fields. Expo % values are entered from 0 (linear) to 100 (very expo-
nential. Two examples and a graph are shown below.
Linear example (Expo % = 0): For each percent of Joystick displacement, the axis velocity
increases a percent:
When the joystick is at 50%, the axis velocity is 50%
When the joystick is at 80%, the axis velocity is 80%
When the joystick is at 100%, the axis velocity is 100%
Nonlinear example (Expo % = 60): At first, increased Joystick displacements do not cause the axis
velocity to increase much, but then as the Joystick displacement
continues to increase, the axis velocity increases at a higher
and higher rates:
When the joystick is at 50%, the axis velocity is 20%
When the joystick is at 80%, the axis velocity is 25%
When the joystick is at 100%, the axis velocity is 100%
Select an axis Expo % field and
enter the desired value.
Calibrating the Joystick range of motion
The system must measure the joystick range of motion before the
joystick can be used. Touch the Teach button to start the calibration
procedure, and then follow the instructions displayed on the screen.
Joystick positions will be indicated by Max(v), Center(v), Min(v)
and Current(v) voltage values.