Curtis 1236SE Rpm on Arduino display

Other Hardware Displays
1

Hello .
Im using the controller of Curtis 1236 SE and the controller is powering a AC motor ,

I want to display the Rpm of the motor , on a display that connected to the Arduino.

My display is Nextion TFT 7" display
And im using Arduino Uno.

It is even possible ? Someone have an experience with the connection of the curtis and can help ?

Thanks