On Sat, 23 Nov 2019 11:41:23 +0000
Herzog Raoul <raoul.her...@heig-vd.ch> wrote:

> dear Andrew,
> 
> The RS274 interpreter is still the original, important concepts like HAL, 
> pins etc, are still there.
> 
> Even with high end drives, you cannot simply stream position data, the 
> reference signals for each drive *must* respect the physical constraints 
> regarding max jerk, max acceleration and max speed !
> 
> Important for understanding : there is NOT ANY trajectory planning INSIDE the 
> drive, only feedback loops and feedforward.

Read CANopen standard 402 which may alsoe be used over Ethercat and som drives 
may actually have trajectory planning but for syncronized motion I am certain 
trajectory MUST be done in Linuxcnc with some margin on the limits.


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