NI SoftMotion Controller Communication Watchdog

The supervisory control in the NI SoftMotion Controller continuously monitors all communication with the drives connected to the host. If any drive fails to update its data in the host loop update period, the axis corresponding to that drive is disabled and the communication watchdog status bit, which is returned by the Read Per Axis Status VI or function, is set to TRUE. Similarly, all drives connected to the NI SoftMotion Controller are configured to go into a fault state if the data from the NI SoftMotion Controller is not updated every host loop update period on the drives.

The communication watchdog functionality ensures that the NI SoftMotion Controller operates in real time.

Tip  To get an axis or axes out of the communication watchdog state, reset the NI SoftMotion Controller.