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- RS485 employs point-to-point communication, whereas CAN uses bus-based communication. While RS485 can accommodate more nodes on a single communication connection and operate over longer distances than CAN, CAN offers superior speed and bandwidth.
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May 10, 2017 · The main difference is the bus arbitration of CAN, which means that the network topology is flexible and there is no need for a master to control traffic. In RS-485 there is no built-in mechanism to toggle who gets to send, meaning that RS-485 tends to end up in a star network topology centred around a master.
The diferential range from +1.5V to +5V is a ‘1’ or mark and -1.5V to -5V is a ‘0’ or space. The area between -1.5V and +1.5V is undefined. It's good to note that when RS-485 is not driven, it is in a high impedance state. For CAN, the output diferential is slightly diferent where the two outputs, CANH and CANL data lines, are a reflection.
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Jan 18, 2024 · Maximum Cable Length: The maximum cable length supported by the CAN bus is 500 meters, however, the maximum cable length supported by RS485 is 1200 meters. Data Transfer Rate: While RS485 allows up to 10 Mbps, CAN bus offers a greater 1 Mbps data transfer rate.
Apr 25, 2022 · CAN Bus VS RS485 - 3 Reasons Why CAN is Better. Updated: May 3, 2022. RS-485 and CAN both happen to be serial communication protocols; they allow multi-drop device arrangement in a single system, considerably cut down cable lengths, are designed to be used in electrically noisy environments, both are terminated using 120 ohms resistance and are ...
Mar 5, 2018 · Join Dave and Bob as they explore the similarities and differences between two key serial interface protocols, Controller Area Network (CAN) and RS-485.
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Dec 14, 2023 · December 14, 2023. Which is Better: CAN vs. RS485 for Serial Communication? In the world of serial communication protocols, two popular options stand out: CAN (Controller Area Network) and RS485. Both protocols are widely used in various industries for connecting devices and facilitating data exchange.
Oct 4, 2022 · Oct 4 2022. Add to myAnalog. Join Dave and Bob as they explore the similarities and differences between two key serial interface protocols, Controller Area Network (CAN) and RS-485. See both protocols on oscilloscopes using one of our RS-485 interface transceivers and our latest CAN transceiver.
