I found this whitepaper on how to configur NI-VISA to control an ethernet based instrument on a windows PC,
but this requires NI-MAX therefore I can't do the same on cRIO. So my question is how to realize a VISA based Ethernet communication on a cRIO to control my instrument.
What is the protocol your instrument uses? Can you simply use the primitive TCP Vis to communicate with the device?
You can build the VISA Resource name from the IP Address. Use MAX to figure out the string and use it in your code for the cRIO.