RS232 and RS485 have always been the common interfaces of weak current. The two serial ports have a lot of basic knowledge, including electrical characteristics, mechanical characteristics, link layer, transmission control and other aspects, this article will compare two common interfaces from a simpler perspective and from the differences between the two sides. And from the current practical point of view, such as RS232 and RS485 conversion, and USB conversion, etc.
If you would hit the mark, you must aim a little above it. Every arrow that flies feels the attraction of earth.
If you wish to succeed, you should use prudence as your brother and hope as your sentry.
In the end, it’s not the years in your life that count. It’s the life in your years.