Error -2147226102 When Trying to Communicate With ATE RCU

Issue Details

I’m trying to communicate with the RCU of my ATE Gen 2 Rack, but upon using the C# example in the manual, it returns this error: 

Error Code: -2147226102, Error Message: The specified resource or device could not be found. 

Solution

This error indicates that your code was not able to find the specified rack at the IP address indicated in the function to open the session with the rack. There are several things that could cause this error: 

1. Verify that you are using the correct credentials to open the session with the RCU. 
2. The host communicates with the rack using port 50051. Verify that this port is not blocked by the firewall or IT security policies of your host.
3. Instead of using the IP address to open the session, test the rack’s hostname to confirm if it repeats the same error. 
4. Verify that you are connecting to the RCU’s ethernet ports correctly. The left port is configured for DHCP, and the right port is configured with a Static IP address. This document explains further how to connect correctly to both ethernet ports. 
5. Verify that your host is not trying to communicate with the rack though IPv6 instead of IPv4. 
   
   1. To confirm this, ping the hostname instead of the IP address. If the host is using IPv6, it will return something similar to: 2001:0db8:85a3:8a2e:0370:7334.
   2. If the host is indeed using IPv6, configure the network adapter settings of your host to disable IPv6 support.