The Siemens SINAUT ST7, TIM 3V-IE advanced communications module for SIMATIC S7-300 with an RS232 interface for SINAUT communication via a classic WAN and an RJ45 interface for SINAUT communication via an IP-based network (WAN or LAN).
Transfer rate for industrial ethernet is 10Mbit/s to 100 Mbit/s 9 pin Sub-D-connector (RS232) 2-pole plugable terminal block