Simatic net, cp 443-1 advanced communications processor for conn. of simatic s7-400 till fw v4. x to ind. ethernet via profinet io-controller and profinet cba, iso, tcp/ip send/receive and fetch/write, udp, tcp, s7 communication, with and w/o rfc1006, multicast html diagnos. , ftp client/server snmp, dhcp, e-mail, www, 10/100 mbits, switch conn. 4xrj45