i cannot establish a connection my NI-RIO

[Tikoy]

Error -63040 (kRIOStatusRPCConnectionError):
A connection could not be established to the specified remote device. Ensure that the device is on and accessible over the network, that NI-RIO software is installed, and that the RIO server is running and properly configured.

For NI-RIO 2.3 and forward, refer to Software>>NI-RIO>>NI-RIO Settings under the system in MAX.
Prior to NI-RIO 2.3, refer to Software>>NI-VISA>>VISA Options under the system in MAX.

[charris]

Hello Tikoy!

There are a couple of things you can try to remove the error you're seeing.

If there is anything wrong with the software installation on the RIO, it could cause the error. Reinstalling the software on the RIO from the Measurement & Automation Explorer might help.

If there is a network issue (such as a conflict with Windows Firewall), there are a few steps you can take documented in this KB:

Why Do I Receive VISA Error 0xBFFF00A7 and NI-RIO Error -63040 Under My CompactRIO Controller in MAX...

Hope that helps!