We are adding to our existing RF401 network. We are trying to get a CR1000 to communicate with a CR206, hop through a RF401 with a CR10X to the base. The CR1000 comes in, but the CR206 does not. The base station can see the CR206 in the network map, but it doesn't establish communications with the CR206. All 3 RF401's are set to PakBus Aware mode. It seems like it's a setting that might be wrong if it can see it in the network.
Have you tried the new network planner in Loggernet 4? It might help solve this problem if you lay it all out in there.
If you don't own it yet you can use the 30 Day free demo version to try it out.
http://www.campbellsci.com/19_1_762