4线（2对）是双工通信，2线（1对）则为半双工通信。全双工（4线），半双工（2线）。根据你不同的的设备选择不同的通信方式。这个一般在设备接口定义里面都有。类似于TX- RX- TX+ RX +，这样子的。百度百科里有的4线 点对点全双工2线 点对多半双工
RS232、RS422和RS485三种串行通信对比 经过上述十期内容,相信各位朋友对RS232、RS422和RS485三种通信都有很深的理解了吧。那么这期和大家分享三者之间的对比。 都是串行通信 RS232、RS422、RS423和RS485基本上都是物理层协议(OSI第一层)。它们都是串行通信协议,并且是无处不在的设备接口。 RS232、RS485和RS4...
1、串行数据标准的基本概述及种类 2、串行通信和并行通信 3、异步串行通信 4、串行数据规则(数据位、同步位、奇偶位、波特率) 5、三种通信方式——单工、半双工和双工通信 6、接口英文缩写具体含义(RXD、TXD、DTR、DSR、CTS等等) 7、RS232的定义和历史、电气特性、物理特性、数据传输速率、连接方式、应用场景等等。
RS-485 supports inexpensivelocal networksand multidrop communications links, using the samedifferential signalingovertwisted pairasRS-422. It is generally accepted that RS-485 can be used with data rates up to 10Mbit/s[a]or, at lower speeds, distances up to 1,200 m (4,000 ft).[2]As aru...
Solved: Hi All, I want to use UART7 and UART8 on iMX6UL for RS485. The schematic of RS485 is as below. I want to use DE/RE_485_2 to control the
爱浦电子隔离收发模块RS485-XXHSAV系列,波特率高达500Kbps,传输速度快。内置隔离电源,隔离电压 3750Vac,在RS485电路中的隔离效果好。同一网络可支持连接256个节点。工作温度
4.Connect the ground wire of the surge protector and the metal shell of the device to the grounding bar. It should test regularly during the surge protector using, if faults then should change or repair on time to ensure the safety of the protected equipment. ...
VSPC BASE 2/4CH RVSPC BASE 2CLVSPC BASE 2CL FGVSPC BASE 2CL FG RVSPC BASE 2CL RVSPC BASE 2SLVSPC BASE 2SL FGVSPC 2SL 24VAC RVSPC 2SL 24VDCVSPC 2SL 24VDC RVSPC 2SL 48VACVSPC 2SL 5VDCVSPC 2SL 5VDC RVSPC 2SL 60VACVSPC 3/4WIRE 24VDCVSPC 3/4WIRE 5VDCVSPC 4...
The SCC1-USB sensor cable provides the same functionality as the SCC1-RS485 with a plug and play USB interface. Together with the free Sensor Viewer software, this is the perfect combination to start testing a Sensirion liquid flow meter.Sensirion provides detailed protocol specifications, ...
芯佰微电子推出的CBM3485是用于RS-485和RS-422通信的低功耗收发器。产品内部包含一个驱动器和一个接收器,其中驱动器压摆率不受限制,传输速率高达 10Mbps。