Communications processor CP 343-1 for connection of SIMATIC S7-300 to Industrial Ethernet over PROFNET IO Controllers, ISO, TCP/IP and UDP, S7 communication, fetch/write, SEND/RECEIVE, with and without RFC1006 Diagnostic add-ons Multicast, chargeable Communication modules, SNMP diagnostics, Initialization via LAN, DHCP, NTP-CPU Sync, 10/100 MBit, only RJ45 connection