Slow Sample Rate on Softmotion Read Express VI

Updated Oct 16, 2019

Reported In

Hardware

  • NI-9146
  • NI-9147
  • NI-9148
  • NI-9149

Issue Details

I am using an ethernet expansion chassis with my softmotion module. I would like to increase the sample rate of my Softmotion Read Express VI. I have tried to make my read loop run as fast as possible, but I cant make it read data faster. Changing the Poll rate vaule on the property notes has no effect.

What can I do?

Solution

The speed rate for the "read" function is limited to the ethernet protocol.
Using an Ethernet expansion chassis, means the process is non-deterministic and the card will only be able to get up to a certain rate that will depends on the network.