rs485通讯接口分为两种，一种是两线制，另一种是四线制。两线制的是半双工通讯方式，四线制是全双工通讯方式。rs485通讯接口，抗干扰能力强，抗噪声干扰性好。在工业控制上，rs485 …

Sep 23, 2017 · It sounds unlikely that the RS485 scale interface works with a RS232-to-USB cable, unless the scale supports both interface standards in parallel on different pins or has a …

Oct 27, 2003 · pic rs485 Hi all. I need RS 485 rx and tx comminication commands for Pic Basic Pro. (use pic 16f84) Thanks. R.Can RAKAN Teknik Danýþman +90.555.311.55.71

Mar 22, 2002 · RS485 is two way: multiple transceivers on the bus. Both busses use two-wire differential signals with identical voltage levels. From a hardware point of view it is possible to …

Jun 27, 2005 · RS485 is basically a single ended to differential line driver and is commonly used with RS232. So what I told is one of the possibilities. Strictly speaking I suppose any other …

May 16, 2008 · The RS485 is a bidirectional communication so there is no meaning to use Tx+ or Tx- alone & the best notation is A, B. But unfortunately here i have to use different …

Feb 4, 2005 · rs485 with pic dear all m making a project using pic microcontroller,in which i need rs485 communication link.can anyone please help me out with this rs485 thing. m new to this. …

Jun 5, 2001 · To get the proper operation you should terminate the RS485 correctly in both ends, this is normally done with a 120ohm resistor. I would advice you to check the data sheet for …

Mar 30, 2010 · Re: I2C vs RS485 Hi, I2C (IIC) stands for Inter-Integrated Circuit, so itss designed for data exchange between two integrated circuits (e.g. microcontroller <--> eeprom) which are …

如题，串口, UART, RS232, RS485,这些概念都有什么区别跟联系？求硬件大神或通讯大神赐教！还有，有没有…