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- RS485 is very simple to implement, very robust from a data integrity as it crosses the wire point of view and very versatile. CAN is much better from a higher level protocol point of view and its ability to handle faults and collisions, but is harder to implement in software if a high level library is not available for your platform.
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What is the difference between RS-485 and can?
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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.
CAN transceivers will exceed the standard in the same way as RS-485 transceivers. The common-mode range (CMR) is -7V to +12V for RS-485 and -2V to +7V for CAN. Many applications need a wider CMR performance from both of these interface types.
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Feb 21, 2024 · Data on the 3.3V CAN bus is transmitted using two states derived from the potential difference between CANH and CANL signals: Dominant state: When controllers send logic ‘0’, the state of the bus will be dominant, and the potential difference between CANH and CANL will be approximately 2V.
- Jesal Shah
Jan 18, 2024 · INTRODUCTION. Communication protocols are essential for establishing connections between devices and for effective data interchange in industrial and automation applications. The Recommended Standard 485 (RS485) and the Controller Area Network (CAN) are two of the most widely used protocols in this industry.
Sep 21, 2020 · 1. The general trend even in automation is that CAN is (slowly) replacing RS485, or rather that CANopen is replacing Profibus. The main reason RS485 lives on isn't technical, but because it's adored by Siemens. It is true however that RS485 is more suitable than classic CAN for higher baudrates > 1Mbps. – Lundin. Sep 23, 2020 at 11:36. 1.
Limited data permitted per frame. Max transmission rate 1Mbits (up to 50m) Max bus length 1600m (at 50kbps) Which Is Best? RS485 is very simple to implement, very robust from a data integrity as it crosses the wire point of view and very versatile.
Mar 5, 2018 · 411. 41K views 6 years ago Interface. Join Dave and Bob as they explore the similarities and differences between two key serial interface protocols, Controller Area Network (CAN) and...
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