Hi All, I have written a raw socket to communicate with the device. It is not responding. I am setting every digital o/p port to high and through raw socket, i want to toggle them. It is not responding at all. my-ip 172.28.76.134 port 5000 module ip 172.28.77.50 port 8080 I have WIZ220IO REV1.O with me i send data as 57 49 5A 32 32 30 4F 00 00 00 AC 1C 4D 32 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Please help me. Thnking you in advance.. lalit