Product number (marketing number) 6GK7543-1AX00-0XE0 Product description Communications processor CP 1543-1 for connecting SIMATIC S7-1500 to Industrial Ethernet; TCP/IP, ISO, UPS, S7 communication, IP-Broadcast/ Multicast, Security (VPN, firewall) Diagnostics SNMPv1/ v3, DHCP, FTP client/server, email, IPv4/IPv6, IEEE 802.1X (radius), time synchronization via NTP, 1 x RJ45 (10/100/1000 Mbit) Product family CP 1543-1