Hi again,
I have got both the RS-232 module and the IP module now working with the RackLink switch. Here are my tips:
1). The user name for the RS-232 and the IP versions needs to be "user" in the Crestron modules.
2). The Control Protocol RS-232 password and the Control Protocol TCP/IP password needs to be set in the RackLink Discovery utility and then matched in both modules.
3). Make sure you have the correct DNS server set in the ethernet settings of your controller device.
4). The single switched outlet on a SW215 RackLink is outlet # 2 in the module connections.
And for those newer users:
Place a TCP/IP client in your system configuration and give it the IP address of the RackLink. Put an entry with the same ID number as the TCP/IP client in the IP table of your controlling device and assign it the IP address of the RackLink as well.
You will know that it is all working when you access the RackLink product through the demo Xpanel and you see Part Number, Rating, IP Address and Mac Address populated on the "Status" page.
Many thanks as always for your generous guidance.
Sincerely,
-David