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Local Interconnect Network
LIN is a network protocol used for communication between components in modern vehicles. It is a low-cost single-step serial protocol that supports communications up to 19.2 Kbit/s with a maximum bus length of 40 metres (131.23 ft).
The need for a cheap serial network arose as the technologies and the facilities implemented in the car grew, while the CAN bus was too expensive to implement for every component in the car. European car manufacturers started using different serial communication technologies, which led to compatibility problems.
In the late 1990s, the LIN Consortium was founded by five automakers (BMW, Volkswagen Group, Audi, Volvo Cars, Mercedes-Benz), with the technologies supplied (networking and hardware expertise) from Volcano Automotive Group and Motorola. The first fully implemented version of the new LIN specification (LIN version 1.3) was published in November 2002. In September 2003, version 2.0 was introduced to expand capabilities and make provisions for additional diagnostics features. LIN may be used also over the vehicle's battery power line with a special LIN-over-DC-power-line (DC-LIN) transceiver. LIN over DC power line (DC-LIN) was standardized as ISO/AWI 17987-8.
CAN in Automation has been appointed by the ISO Technical Management Board (TMB) as the Registration Authority for the LIN Supplier ID standardized in the ISO 17987 series.
LIN is a broadcast serial network comprising 16 nodes (one primary and up to 15 secondary nodes).
All messages are initiated by the primary node with at most one secondary node replying to a given message identifier. The primary node can also act as a secondary node by replying to its own messages. Because all communications are initiated by the primary node it is not necessary to implement a collision detection.
The primary and secondary nodes are typically microcontrollers, but may be implemented in specialized hardware or ASICs in order to save cost, space, or power.
Current uses combine the low-cost efficiency of LIN and simple sensors to create small networks. These sub-systems can be connected by a back-bone network (i.e. CAN in cars).
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Local Interconnect Network
LIN is a network protocol used for communication between components in modern vehicles. It is a low-cost single-step serial protocol that supports communications up to 19.2 Kbit/s with a maximum bus length of 40 metres (131.23 ft).
The need for a cheap serial network arose as the technologies and the facilities implemented in the car grew, while the CAN bus was too expensive to implement for every component in the car. European car manufacturers started using different serial communication technologies, which led to compatibility problems.
In the late 1990s, the LIN Consortium was founded by five automakers (BMW, Volkswagen Group, Audi, Volvo Cars, Mercedes-Benz), with the technologies supplied (networking and hardware expertise) from Volcano Automotive Group and Motorola. The first fully implemented version of the new LIN specification (LIN version 1.3) was published in November 2002. In September 2003, version 2.0 was introduced to expand capabilities and make provisions for additional diagnostics features. LIN may be used also over the vehicle's battery power line with a special LIN-over-DC-power-line (DC-LIN) transceiver. LIN over DC power line (DC-LIN) was standardized as ISO/AWI 17987-8.
CAN in Automation has been appointed by the ISO Technical Management Board (TMB) as the Registration Authority for the LIN Supplier ID standardized in the ISO 17987 series.
LIN is a broadcast serial network comprising 16 nodes (one primary and up to 15 secondary nodes).
All messages are initiated by the primary node with at most one secondary node replying to a given message identifier. The primary node can also act as a secondary node by replying to its own messages. Because all communications are initiated by the primary node it is not necessary to implement a collision detection.
The primary and secondary nodes are typically microcontrollers, but may be implemented in specialized hardware or ASICs in order to save cost, space, or power.
Current uses combine the low-cost efficiency of LIN and simple sensors to create small networks. These sub-systems can be connected by a back-bone network (i.e. CAN in cars).