Sequential to Ethernet converter has one and numerous sequential ports or most extreme 25 sequential ports. Standard board mounted sequential to Ethernet converter is the most well-known. In any case, DIN mounts are additionally accessible so they can be effectively mounted on standard DIN rails. It can likewise be utilized as a remote converter. In such condition, IP/TCP information bundle are sent over IEEE 802.11a/b/g arrange interface.KPORT Modules Some sequential to Ethernet converters just have RS232 sequential ports, others have RS232 and RS485 sequential ports, while there are some sequential to Ethernet converters have 3 implicit sequential ports (RS232, RS485, and RS422). 

Freescale offers a reference structure for   serial to ethernet converters  interfacing your old MCU undertakings to the web. It is a sequential to-Ethernet connect which spans UART, SPI and IIC to Ethernet without any problem. The structure is assembled utilizing the MCF51CN128, the open-source RTOS FreeRTOS and the TCP/IP stack LwIP. The microcontroller utilized in this application underpins Ethernet-based availability. This execution incorporates a little memory impression web worker and TCP/IP attachment to-sequential correspondence for a low-end Ethernet-based microcontroller arrangement. Board schematics, design, and gerber documents are given. More on this reference Design