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What is difference between Rs-232 and RS485?
RS232 is more than able to perform for a short distance and low data speed requirements. RS232 has a transmission speed of 1Mb/s up to 15M. However, RS485 has a data transmission speed of up to 10Mb/s for a distance of 15M. At the maximum of 1200M, RS485 transmits at 100Kb/s.
Is RS485 obsolete?
Two of the oldest interfaces are RS-232 and RS-485. These legacy interfaces aren’t obsolete or discontinued, though. Both are still alive and well in many applications. The whole purpose of a serial interface is to provide a single path for data transmission wirelessly or over a cable.
What’s the difference between RS-232 and RS-485?
The data transfer rate offered by rs485 is nearly 20 Mbps whereas that of rs232 is 10 kbps. A huge limitation of rs232 was its transmission speed and to deal with it rs485 came into existence. RS-485 is used for a comparatively longer distance of transmission than RS-232.
What is the purpose of the RS232 interface?
The RS232 interface or TIA/EIA-232 is a data transfer protocol designed to control serial communication. It is used to organize the data flowing from a piece of Data Terminal Equipment (DTE) like a terminal or transmitter to a receiver or other type of Data Communications Equipment (DCE).
What are the applications of the RS485 protocol?
The RS485 protocol has found a widespread application in CCTV (Closed Circuit TV) cameras. If you work with serial interfaces and devices you may be in need of some software tools to assist you in carrying out your duties. Eltima software has developed three applications that make it easy to work with serial devices and extend their capabilities.
How many contacts does a RS485 interface have?
RS485 interfaces with 2 contacts operate in half-duplex mode, either sending or receiving data exclusively at one time. RS485 interfaces can also have 4 contacts in which case it can run in full-duplex mode. When used in this way data can be transmitted and received simultaneously.