Communications processor CP 1545-1 for connection of SIMATIC S7-1500 to Industrial Ethernet TCP/IP. UDP. S7 communication. Security (firewall). SNMPv1/v3. DHCP. FTP client/server. email. IPv4/IPv6. time-of-day synchronization via NTP. connection to cloud systems via MQTT. 1x RJ45 (10/100/1000 Mbps)