In NI motion user manual about Kv
7.0: You can use a secondary feedback encoder for velocity feedback if the axis
is configured for it. The velocity feedback gain (Kv) is used to scale this
velocity feedback before it is added to the other components in the 16-bit
DAC command output.
7.1:You can use a primary or secondary feedback encoder for velocity
feedback. Setting the velocity feedback gain (Kv) to a value other than
zero (0) enables velocity feedback using the secondary encoder, if
configured, or the primary encoder if a secondary encoder is not
configured.
How should I under stand it about 7.1? if I use 7.1 edition, can I use the same encoder both as position feedback and velocity feedback(I am using 7344)?
Now I use the position feedback. I try to tune Kv, and Vff. It seems no obvious effect. Do I neglect it or is it a truth in deed?
Thanks a lot.
