Help: Low latency Ethernet to serial solution

zhjun72

Help: Low latency Ethernet to serial solution [Copy link]

A project requires data to be transmitted via 100M Ethernet and forwarded to a serial port or RS485 interface with a delay of less than 2ms. Two solutions are considered:

1. Use serial port transparent transmission, such as CH9121, which does not contain software protocol stack and has the simplest circuit;

2. Use W5500 with hardware protocol stack, which is faster in theory, but the software is more complicated;

3. An external serial port server is connected, but no delay time indicator is found. Some give 10ms;

I would like to ask you, who has experience in this area, which solution is reliable?

Thanks!

combat

If the network cable input is not TCP/IP protocol, this problem is not big. If the network cable input refers to the use of TCP/IP protocol, this is almost impossible.