SIPLUS CP 1543-1 -40...+60 °C Start-up -25 °C with conformal coating based on 6GK7543-1AX00-0XE0 Communications processor for connecting SIMATIC S7-1500 to Industrial Ethernet: TCP/IP, ISO, UDP, S7 communication, IP-BROADCAST/ MULTICAST, security (hardware identification, IP/MAC access list, firewall), Diagnostics SNMPV1/V3, DHCP, FTP client/ server, Email, IPV4/IPV6, data storage on SD Card of the CPU, time-of-day synchronization via NTP, Access to the "Web server of the CPU; Gigabit interface" 1x RJ45 (10/100/1000 MB)