Siemens 6GK7443-1RX00-0XE0 Communication Processor. Siemens 6GK7443-1RX00-0XE0 is the exact manufacturer order number for a communication processor in the SIMATIC NET Industrial Communication portfolio. Siemens describes this exact reference as: Communications processor CP 443-1 RNA; 1x 10/100 Mbit/s RJ45 port; ISO; S7, H-communic., open comm. (send/receive) S7 routing; 2x 100 Mbit/s RJ45 port: PRP; ISO; ISO-on-TCP; TCP; UDP S7, H-communic., open comm. (send/receive) S7 routing; time synchronization; IP access Control List; Web diagnostics; SNMPV1.. The verified manufacturer lifecycle record is PM300: Active Product.