To make it simple, you just connects your PC (set the IP address of it to 192.168.1.1) and the reader, either directly or through a switch.
Then install the IIS with PHP support (https://technet.microsoft.com/en-us/library/hh994592(v=ws.11).aspx).
Create \avea.php as follows:
echo “DHCP=0”; // disable DHCP
echo “IP=192.168.002.105”; // whatever IP you want
echo “NM=255.255.2555.000”; // whatever netmask
echo “GW=192.168.002.001”; // whatever gateway
echo “WS=192.168.002.222”; // whatever web server
echo “BEEP=1”; // make a beep sound to indicate the setup is success
After the reader make a beep sound, power off the reader and reset the PC to original IP settings. Power up the reader again and it will talk to the web server (i.e. 192.168.2.222).