Communications processor CP 443-1 Advanced for connection from SIMATIC S7-400 to FW V4.x to Industrial Ethernet PROFINET IO Controller and PROFINET CBA, ISO, TCP/IP SEND/RECEIVE and Fetch/Write, UDP, TCP, S7 communication, with and without RFC1006, Multicast HTML FTP Client/Server SNMP, DHCP, Email, WWW, 10/100 MBit, Switch connection 4x RJ45