Controlling the IO-FEP2 through the network is done by means of HTTP GET requests. Setting parameter values or querying readings or settings, all is done by requesting HTTP documents from the IO-FEP2. The message to the IO-FEP2 thereby is coded into the URL as a CGI form parameter. The IO-FEP2 replies a one line document of the MIME type 'text/plain'.
The document name for remote control is /rmt , hence (assuming the IO-FEP2 is listening to the IP address 10.0.0.1), requesting a document with the URL
http://10.0.0.1/rmt?tmp0=?
will let the IO-FEP2 reply the actual level in a one line text document:
tmp0=36.3
This way all parameters may be queried or set, you may use your favourite web browser to try out the remote control of the IO-FEP2 manually.