S5-TCP/IP is the Ethernet interface for SIMATIC® S5 PLCs (PLC 115, 135, 150, 155). With the universal communication processor the connection to TCP/IP as well as to ISO (H1) networks is possible.

INAT S7-TCP/IP is the high performance Ethernet interface for S7 PLCs of the series 400. The universal communication processor can be used with both TCP/IP and H1 simultaneously and in parallel. Besides the S7 protocol the INAT CP supports the entire S5 AP header. With this number of protocols the INAT S7-TCP/IP may be integrated seamlessly in existing S5 and S7 Ethernet networks.