Communications processor CP 442-1 RNA 1x 10/100 Mbit/s RJ45 port: ISO; S7-, H communication, Open communication (SEND/RECEIVE); S7 routing. 2x 100 Mbit/s, RJ45 port: PRP; ISO; ISO-on-TCP; TCP; UDP S7-, H communication, Open Communication (SEND/RECEIVE); S7 routing; Time synchronization IP Access Control List; Web diagnostics; SNMPV1