Mitsubishi MELSEC-F, Training Manual

Page: 53 / 74

Positioning Control Actual Positioning 5
5-5
5.2.3 Parameters
In addition to the preparation of a positioning program, diversified parameters should be set in
the FX
2N
-20GM.
In this example, only a few parameters need be set. If a plotting table is used, the parameters
should be set in accordance with its mechanism. These will depend upon the specific plotter
type, and should be found in the documentation provided with the plotter.
Below are the four positioning parameter windows from VPS, copy these settings into your
program.
The values for both the X and Y axes are the same for all parameters.
The system of units we will be using is both mechanical and motor, so that the position can be
controlled in mm, deg, 1/10 inch etc. while the speed can be controlled by the number of
pulses. The system units should be set to ‘mm, and all other options left as default.
So that we can follow the path created by the FX2N-20GM, the Max speed should be set quite
low. Intern both the JOG speed and the Interpolation value must be reduced. In practice, it is
impossible to have the JOG speed faster than the Max speed setting.
Remember to change the setting for the Y axis also.