Reading RSSI value between two XBees using an Arduino Nano with IO shield

I am trying to create a network that reads the RSSI values between 4 XBees using Arduino Nanos with IO shields - Arduino Nano IO shield - ITEAD Wiki.

However, I am very much a newbie. Is this possible? I can’t work out how to connect everything to get this working, as I am not sure where the RSSI output (pin 6) is on the shield. This is the schematic for the shield.

Hope someone can help. Thanks.

Where do you want answers, here or in your other post on this subject ?

Here is good - I think the other one has been removed now anyway.