{"id":4204,"date":"2026-07-12T15:08:11","date_gmt":"2026-07-12T13:08:11","guid":{"rendered":"https:\/\/www.dunasys.com\/?p=4204"},"modified":"2026-07-15T15:27:37","modified_gmt":"2026-07-15T13:27:37","slug":"can-data-acquisition-how-it-works-and-telematics-solutions","status":"publish","type":"post","link":"https:\/\/www.dunasys.com\/en\/actualites\/telematics\/can-data-acquisition-how-it-works-and-telematics-solutions\/","title":{"rendered":"CAN Data Acquisition: How It Works and Telematics Solutions"},"content":{"rendered":"\n\n\n\n<section class=\"block-hero block-hero-articles-dunasys\"\n        >\n            <div class=\"block-hero-articles-dunasys_breadcrumb\">\n            <div class=\"container\">\n                            <div class=\"breadcrumb\">\n            <ul class=\"breadcrumb-list\">\n                                                                                                                                            <li class=\"breadcrumb-list_item\">\n                    <a href=\"https:\/\/www.dunasys.com\/en\/\">Home<\/a>\n                <\/li>\n                                    <li class=\"breadcrumb-list_item\">CAN Data Acquisition: How It Works and Telematics Solutions<\/li>\n                            <\/ul>\n        <\/div>\n    \n            <\/div>\n        <\/div>\n        <div class=\"block-hero-articles-dunasys_content\">\n        <div class=\"container\">\n            <div class=\"grid\">\n                <div class=\"grid_title\">\n                                    \n                                \n                                        \n                                \n                    \n            <h1\n        class=\"title title-hero js-text-gradient-scroll\"\n                 data-gradient-duration=\"2.5\"        >CAN Data Acquisition: How It Works and Telematics Solutions<\/h1>\n    \n                                                \n                                    \n                \n        <div class=\"editor\"\n        >\n        D\u00e9couvrez comment fonctionne l\u2019acquisition de donn\u00e9es CAN et choisissez une solution t\u00e9l\u00e9matique performante pour la gestion de flotte et l\u2019autopartage. <a href=\"https:\/\/www.dunasys.com\/en\/actualites\/telematics\/can-data-acquisition-how-it-works-and-telematics-solutions\/\" class=\"read-more\">Read More<\/a>\n        <\/div>\n    \n                    <div class=\"meta\">\n                                                    <div class=\"author\">Par Bastien Jaffre<\/div>\n                                                <div class=\"date\">Le 12 July 2026<\/div>\n                    <\/div>\n                <\/div>\n                                    <div class=\"grid_thumb\">\n                                    \n                                                                                                                                            \n                <picture class=\"post-img-wrapper\">\n\n                                        <source media=\"(min-width: 1024px)\" srcset=\"https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-1200x0-c-default.jpg 1x, https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-2400x0-c-default.jpg 2x\">\n\n                                        <source media=\"(min-width: 768px)\" srcset=\"https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-800x0-c-default.jpg 1x, https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-1600x0-c-default.jpg 2x\">\n\n                                        <img decoding=\"async\" src=\"https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-400x0-c-default.jpg\"\n                         srcset=\"https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-400x0-c-default.jpg 1x, https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Visuel-Bandeau-Hero-HomePage-28-1-800x0-c-default.jpg 2x\"                         alt=\"Visuel Bandeau H\u00e9ro Homepage (28)\"\n                          width=\"1920\"                           height=\"1080\"                           class=\"post-img\"                                                       fetchpriority=\"high\" loading=\"eager\"\n                                             >\n                <\/picture>\n                        \n                    <\/div>\n                            <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n\n\n<section    \n        class=\"block-editor block-editor-post\"\n        >\n    <div class=\"container\">\n        <div class=\"grid\">\n            <div class=\"grid_content\">\n                <div class=\"editor\"><h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>CAN Data Acquisition<\/strong><\/h2>\n<p class=\"font-claude-response-body break-words whitespace-normal\">Operational optimization and the management of modern vehicle fleets rely on absolute mastery of onboard information flows. At the heart of this digital transformation, CAN data acquisition via telematics has established itself as an essential methodology for capturing, centralizing, and leveraging every physical or digital signal in real time.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\">Whether for the monitoring of industrial vehicles, micro-mobility, or the deployment of car-sharing services, the use of the Controller Area Network (CAN) protocol enables robust, bidirectional, and standardized communication. For fleet managers and R&amp;D teams, deploying the right connected system for remote measurement, control, and diagnostics is a highly strategic challenge.<\/p>\n<h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>What Is CAN Data Acquisition?<\/strong><\/h2>\n<h3 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Definition and Role of the Bus Within a Connected Network<\/strong><\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal\">CAN bus data acquisition consists of intercepting, recording, and remotely transmitting the information flowing through the multiplexed communication network of a rolling vehicle. Originally designed to simplify wiring inside each vehicle, this system connects various electronic control units within a single distributed architecture.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\">Each node in the network can send and receive messages autonomously. The data acquisition and monitoring (DAQ) architecture developed by DUNASYS relies on an intelligent embedded interface to capture this information transmission, enabling its instantaneous centralization without requiring the physical connection of a computer.<\/p>\n<h3 class=\"font-claude-response-body break-words whitespace-normal\"><strong>From Physical Signal to IoT Frame<\/strong><\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal\">In a fleet monitoring or eco-driving process, various sensors continuously measure physical quantities such as temperature, fuel level, speed, or electrical variables such as battery state. These raw analog signals first undergo a conditioning phase before being converted into digital values.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\">Once this conversion is complete, the embedded control unit encapsulates this data in binary code within a standardized frame. The telematics unit captures these differential voltage signals and transmits them to the cloud, guaranteeing maximum data integrity against external interference.<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>How the CAN Protocol and Frame Work<\/strong><\/h2>\n<p class=\"font-claude-response-body break-words whitespace-normal\">The exchange mechanism within the network relies on non-destructive bitwise arbitration. Two logical and physical states characterize transmission on the lines: the dominant state and the recessive state. If multiple systems transmit simultaneously, the node applying a dominant bit takes priority over the recessive level, thereby preventing data collisions on the vehicle bus.<\/p>\n<h3 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Anatomy of a CAN Frame Used in Fleet Management<\/strong><\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal\">A CAN frame is composed of several distinct sections, known as fields, that structure the information useful for telematics:<\/p>\n<ul>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>The arbitration field (ID):<\/strong> A unique message identifier encoded on 11 bits (standard CAN) or 29 bits (extended CAN). It defines the absolute priority of the frame.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>The control field (DLC):<\/strong> Indicates the number of useful data bytes present in the message (from 0 to 8 bytes).<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>The data field:<\/strong> Contains the digitized physical values from each sensor.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>The control field (CRC):<\/strong> Dedicated to detecting transmission errors to secure the system.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3 class=\"font-claude-response-body break-words whitespace-normal\"><strong>The Evolution Toward Connected CAN FD Systems<\/strong><\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal\">To meet the complexity of modern applications and hybrid or electric vehicle architectures, the CAN FD (Flexible Data-rate) standard brings key innovations. It increases transfer speed during the transmission phase and extends the payload to up to 64 bytes per frame. DUNASYS smart units integrate this evolution to densify the acquisition of complex signals without saturating the original bus.<\/p>\n<p>&nbsp;<\/p>\n<h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Application Areas: Fleet Management and Car Sharing<\/strong><\/h2>\n<p class=\"font-claude-response-body break-words whitespace-normal\">The integration of high-performance DAQ systems and telematics units meets strict optimization and safety requirements:<\/p>\n<ul>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Fleet management and eco-driving:<\/strong> Analysis of driver behavior by correlating bus frames with external voltage measurements or GPS data to reduce TCO.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Predictive maintenance:<\/strong> Real-time fleet monitoring where the network ensures the instant transmission of alerts and manufacturer error codes before a mechanical or electrical failure occurs.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Connected car-sharing solutions:<\/strong> The module captures locking data, vehicle status, and interacts with a mobility platform to automate bookings and keyless access.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>The DUNASYS Hardware and Software Architecture<\/strong><\/h2>\n<p class=\"font-claude-response-body break-words whitespace-normal\">Setting up a robust acquisition and transmission chain requires the harmonious interaction of several hardware and software components.<\/p>\n<h3 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Hardware: The DCar Range<\/strong><\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal\">To capture signals and ensure real-time monitoring, DUNASYS designs cutting-edge equipment:<\/p>\n<ul>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Telematics units (DCar-E, DCar-S, DCar-E 3W):<\/strong> These hardware units connect directly to the vehicle bus. They integrate strict galvanic isolation to protect the original electronics against voltage spikes and electrical anomalies.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>The DunaIO module:<\/strong> A system configured to retrieve specific data streams in real time and transmit them to a connected interface.<\/li>\n<\/ul>\n<h3 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Software and Data Processing<\/strong><\/h3>\n<p class=\"font-claude-response-body break-words whitespace-normal\">The cloud software and supervision APIs translate the hexadecimal code of received messages, extracting each information field and converting it into understandable values using specific databases:<\/p>\n<ul>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>DBC files:<\/strong> Indicate to the software the exact bit position and conversion factor of each signal.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Standardized diagnostic protocols:<\/strong> Support for industry standards such as OBD-II for passenger vehicles and J1939 for heavy machinery and trucks, enabling universal decoding across multi-brand fleets.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Criteria for Choosing a CAN Acquisition Solution<\/strong><\/h2>\n<p class=\"font-claude-response-body break-words whitespace-normal\">The choice of tools depends on the type of environment and the constraints of your applications.<\/p>\n<figure id=\"attachment_4207\" aria-describedby=\"caption-attachment-4207\" style=\"width: 697px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4207\" src=\"https:\/\/www.dunasys.com\/wp-content\/uploads\/2026\/07\/Capture-decran-2026-07-06-113521-1.png\" alt=\"Capture D'\u00e9cran 2026 07 06 113521\" width=\"697\" height=\"560\" \/><figcaption id=\"caption-attachment-4207\" class=\"wp-caption-text\"><em>Criterias &amp; Specifications<\/em><\/figcaption><\/figure>\n<h2 class=\"font-claude-response-body break-words whitespace-normal\"><strong>Integration and Best Practices for Connected Architecture<\/strong><\/h2>\n<p class=\"font-claude-response-body break-words whitespace-normal\">To maximize the reliability of your measurement and data transmission architecture:<\/p>\n<ul>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Respect network impedance:<\/strong> Integrating a unit onto the bus must never disrupt the line impedance. Poor impedance can alter the original electrical signal.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Monitor the error rate:<\/strong> An increase in the number of errors is often a sign of an installation fault, an isolation issue, or incorrect configuration of the unit&#8217;s reading speed.<\/li>\n<li class=\"font-claude-response-body break-words whitespace-normal\"><strong>Secure and synchronize data flows:<\/strong> Ensure temporal alignment between the reception of logical frames and GPS data conditioning to guarantee the accuracy of your fleet analysis.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\">DUNASYS develops comprehensive solutions combining intelligent embedded units and cutting-edge connected platforms. Our hardware solutions and software layers simplify signal processing, sensor management, and the real-time leveraging of your mobility data.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\">Would you like to connect your fleet or deploy a bespoke car-sharing solution? <a href=\"http:\/\/CAN Data Acquisition Operational optimization and the management of modern vehicle fleets rely on absolute mastery of onboard information flows. At the heart of this digital transformation, CAN data acquisition via telematics has established itself as an essential methodology for capturing, centralizing, and leveraging every physical or digital signal in real time. Whether for the monitoring of industrial vehicles, micro-mobility, or the deployment of car-sharing services, the use of the Controller Area Network (CAN) protocol enables robust, bidirectional, and standardized communication. For fleet managers and R&amp;D teams, deploying the right connected system for remote measurement, control, and diagnostics is a highly strategic challenge. What Is CAN Data Acquisition? Definition and Role of the Bus Within a Connected Network CAN bus data acquisition consists of intercepting, recording, and remotely transmitting the information flowing through the multiplexed communication network of a rolling vehicle. Originally designed to simplify wiring inside each vehicle, this system connects various electronic control units within a single distributed architecture. Each node in the network can send and receive messages autonomously. The data acquisition and monitoring (DAQ) architecture developed by DUNASYS relies on an intelligent embedded interface to capture this information transmission, enabling its instantaneous centralization without requiring the physical connection of a computer. From Physical Signal to IoT Frame In a fleet monitoring or eco-driving process, various sensors continuously measure physical quantities such as temperature, fuel level, speed, or electrical variables such as battery state. These raw analog signals first undergo a conditioning phase before being converted into digital values. Once this conversion is complete, the embedded control unit encapsulates this data in binary code within a standardized frame. The telematics unit captures these differential voltage signals and transmits them to the cloud, guaranteeing maximum data integrity against external interference. How the CAN Protocol and Frame Work The exchange mechanism within the network relies on non-destructive bitwise arbitration. Two logical and physical states characterize transmission on the lines: the dominant state and the recessive state. If multiple systems transmit simultaneously, the node applying a dominant bit takes priority over the recessive level, thereby preventing data collisions on the vehicle bus. Anatomy of a CAN Frame Used in Fleet Management A CAN frame is composed of several distinct sections, known as fields, that structure the information useful for telematics: The arbitration field (ID): A unique message identifier encoded on 11 bits (standard CAN) or 29 bits (extended CAN). It defines the absolute priority of the frame. The control field (DLC): Indicates the number of useful data bytes present in the message (from 0 to 8 bytes). The data field: Contains the digitized physical values from each sensor. The control field (CRC): Dedicated to detecting transmission errors to secure the system. The Evolution Toward Connected CAN FD Systems To meet the complexity of modern applications and hybrid or electric vehicle architectures, the CAN FD (Flexible Data-rate) standard brings key innovations. It increases transfer speed during the transmission phase and extends the payload to up to 64 bytes per frame. DUNASYS smart units integrate this evolution to densify the acquisition of complex signals without saturating the original bus. Application Areas: Fleet Management and Car Sharing The integration of high-performance DAQ systems and telematics units meets strict optimization and safety requirements: Fleet management and eco-driving: Analysis of driver behavior by correlating bus frames with external voltage measurements or GPS data to reduce TCO. Predictive maintenance: Real-time fleet monitoring where the network ensures the instant transmission of alerts and manufacturer error codes before a mechanical or electrical failure occurs. Connected car-sharing solutions: The module captures locking data, vehicle status, and interacts with a mobility platform to automate bookings and keyless access. The DUNASYS Hardware and Software Architecture Setting up a robust acquisition and transmission chain requires the harmonious interaction of several hardware and software components. Hardware: The DCar Range To capture signals and ensure real-time monitoring, DUNASYS designs cutting-edge equipment: Telematics units (DCar-E, DCar-S, DCar-E 3W): These hardware units connect directly to the vehicle bus. They integrate strict galvanic isolation to protect the original electronics against voltage spikes and electrical anomalies. The DunaIO module: A system configured to retrieve specific data streams in real time and transmit them to a connected interface. Software and Data Processing The cloud software and supervision APIs translate the hexadecimal code of received messages, extracting each information field and converting it into understandable values using specific databases: DBC files: Indicate to the software the exact bit position and conversion factor of each signal. Standardized diagnostic protocols: Support for industry standards such as OBD-II for passenger vehicles and J1939 for heavy machinery and trucks, enabling universal decoding across multi-brand fleets. Criteria for Choosing a CAN Acquisition Solution The choice of tools depends on the type of environment and the constraints of your applications. Integration and Best Practices for Connected Architecture To maximize the reliability of your measurement and data transmission architecture: Respect network impedance: Integrating a unit onto the bus must never disrupt the line impedance. Poor impedance can alter the original electrical signal. Monitor the error rate: An increase in the number of errors is often a sign of an installation fault, an isolation issue, or incorrect configuration of the unit's reading speed. Secure and synchronize data flows: Ensure temporal alignment between the reception of logical frames and GPS data conditioning to guarantee the accuracy of your fleet analysis. DUNASYS develops comprehensive solutions combining intelligent embedded units and cutting-edge connected platforms. Our hardware solutions and software layers simplify signal processing, sensor management, and the real-time leveraging of your mobility data. Would you like to connect your fleet or deploy a bespoke car-sharing solution? Discover DUNASYS intelligent solutions.\">Discover DUNASYS intelligent solutions.<\/a><\/p>\n<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n\n\n<section    \n        class=\"block-faq block-faq-1 block-faq-3-dunasys\"\n        >\n    <div class=\"container\">\n        <div class=\"grid\">\n            <div class=\"grid_title\">\n                                \n                                \n                                        \n                        \n                    \n            <h2\n        class=\"title title-section\"\n                        >Questions &#038; Answers<\/h2>\n    \n            <\/div>\n                            <div class=\"grid_content\">\n                                            <div class=\"accordion-item\">\n                            <div class=\"accordion-item_header\">\n                                <h3 class=\"question\">\n                                    <button class=\"question_btn\"\n                                            type=\"button\"\n                                            aria-expanded=\"false\"\n                                            aria-controls=\"faq-ans-block_d21368f3c975e7b92dad57d41d773a5b-1\"\n                                            id=\"faq-q-block_d21368f3c975e7b92dad57d41d773a5b-1\">\n                                        How does a fleet management unit interpret a specific signal?\n                                    <\/button>\n                                <\/h3>\n                                <div class=\"icon\">\n                                    <svg width=\"12\" height=\"18\" viewBox=\"0 0 12 18\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                        <line x1=\"5.68164\" y1=\"4.69898e-07\" x2=\"5.68164\" y2=\"15.7739\" stroke=\"white\" stroke-width=\"1.5\"\/>\n                                        <path d=\"M10.5312 10.9805L5.53125 15.9805L0.531259 10.9805\" stroke=\"white\" stroke-width=\"1.5\"\/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"accordion-item_content\"\n                                 id=\"faq-ans-block_d21368f3c975e7b92dad57d41d773a5b-1\"\n                                 role=\"region\"\n                                 aria-labelledby=\"faq-q-block_d21368f3c975e7b92dad57d41d773a5b-1\">\n                                                            \n                                    \n                \n        <div class=\"editor answer\"\n                                                        >\n        <p class=\"font-claude-response-body break-words whitespace-normal\">Every message circulating on the bus consists of a sequence of bits. The embedded software or cloud platform uses a configuration file that tells it precisely which field contains the target signal, instantly converting the code into actionable business data.<\/p>\n\n        <\/div>\n    \n                            <\/div>\n                        <\/div>\n                                            <div class=\"accordion-item\">\n                            <div class=\"accordion-item_header\">\n                                <h3 class=\"question\">\n                                    <button class=\"question_btn\"\n                                            type=\"button\"\n                                            aria-expanded=\"false\"\n                                            aria-controls=\"faq-ans-block_d21368f3c975e7b92dad57d41d773a5b-2\"\n                                            id=\"faq-q-block_d21368f3c975e7b92dad57d41d773a5b-2\">\n                                        What is the importance of isolation in a telematics unit?\n                                    <\/button>\n                                <\/h3>\n                                <div class=\"icon\">\n                                    <svg width=\"12\" height=\"18\" viewBox=\"0 0 12 18\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                        <line x1=\"5.68164\" y1=\"4.69898e-07\" x2=\"5.68164\" y2=\"15.7739\" stroke=\"white\" stroke-width=\"1.5\"\/>\n                                        <path d=\"M10.5312 10.9805L5.53125 15.9805L0.531259 10.9805\" stroke=\"white\" stroke-width=\"1.5\"\/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"accordion-item_content\"\n                                 id=\"faq-ans-block_d21368f3c975e7b92dad57d41d773a5b-2\"\n                                 role=\"region\"\n                                 aria-labelledby=\"faq-q-block_d21368f3c975e7b92dad57d41d773a5b-2\">\n                                                            \n                                    \n                \n        <div class=\"editor answer\"\n                                                        >\n        <p class=\"font-claude-response-body break-words whitespace-normal\">Electrical isolation protects the connected unit&#8217;s communication interface against ground loops and transient overvoltages that are common in vehicle circuits. It prevents physical signal distortion and guarantees the continuity of the telematics solution without risking damage to the original control units.<\/p>\n\n        <\/div>\n    \n                            <\/div>\n                        <\/div>\n                                            <div class=\"accordion-item\">\n                            <div class=\"accordion-item_header\">\n                                <h3 class=\"question\">\n                                    <button class=\"question_btn\"\n                                            type=\"button\"\n                                            aria-expanded=\"false\"\n                                            aria-controls=\"faq-ans-block_d21368f3c975e7b92dad57d41d773a5b-3\"\n                                            id=\"faq-q-block_d21368f3c975e7b92dad57d41d773a5b-3\">\n                                        What happens in the event of an error on the vehicle&#8217;s CAN bus?\n                                    <\/button>\n                                <\/h3>\n                                <div class=\"icon\">\n                                    <svg width=\"12\" height=\"18\" viewBox=\"0 0 12 18\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                                        <line x1=\"5.68164\" y1=\"4.69898e-07\" x2=\"5.68164\" y2=\"15.7739\" stroke=\"white\" stroke-width=\"1.5\"\/>\n                                        <path d=\"M10.5312 10.9805L5.53125 15.9805L0.531259 10.9805\" stroke=\"white\" stroke-width=\"1.5\"\/>\n                                    <\/svg>\n                                <\/div>\n                            <\/div>\n                            <div class=\"accordion-item_content\"\n                                 id=\"faq-ans-block_d21368f3c975e7b92dad57d41d773a5b-3\"\n                                 role=\"region\"\n                                 aria-labelledby=\"faq-q-block_d21368f3c975e7b92dad57d41d773a5b-3\">\n                                                            \n                                    \n                \n        <div class=\"editor answer\"\n                                                        >\n        <div role=\"feed\" aria-label=\"Messages de la conversation\" aria-describedby=\"_r_1d1_\" aria-busy=\"false\" data-find-provider-scope=\"\">\n<div data-sizer-excess=\"0\">\n<div data-index=\"139\" data-last-message=\"true\">\n<div tabindex=\"0\" role=\"article\" aria-setsize=\"140\" aria-posinset=\"140\" aria-label=\"Message 140 sur 140\">\n<div data-test-render-count=\"1\">\n<div class=\"group\">\n<div class=\"contents\">\n<div class=\"group relative relative pb-[var(--msg-assistant-pb,0.75rem)]\" data-is-streaming=\"false\">\n<div class=\"font-claude-response relative leading-[1.65rem] [&amp;_pre&gt;div]:bg-bg-000\/50 [&amp;_pre&gt;div]:border-0.5 [&amp;_pre&gt;div]:border-border-400 [&amp;_.ignore-pre-bg&gt;div]:bg-transparent [&amp;_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&amp;_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [&amp;_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&amp;_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8\">\n<div>\n<div class=\"standard-markdown grid-cols-1 grid [&amp;_&gt;_*]:min-w-0 gap-3 standard-markdown\">\n<p class=\"font-claude-response-body break-words whitespace-normal\">The protocol has a very strict error management mechanism. If a node detects a non-conformity, it generates an error message. Our units trace these anomalies to help you remotely identify a predictive maintenance issue or a wiring fault on the vehicle.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"flex justify-start ml-0.5\" data-message-action-bar=\"\">\n<div class=\"text-text-300\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n        <\/div>\n    \n                            <\/div>\n                        <\/div>\n                                    <\/div>\n                    <\/div>\n    <\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>D\u00e9couvrez comment fonctionne l\u2019acquisition de donn\u00e9es CAN et choisissez une solution t\u00e9l\u00e9matique performante pour la gestion de flotte et l\u2019autopartage.<\/p>\n","protected":false},"author":2,"featured_media":4206,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[],"class_list":["post-4204","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-telematics"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CAN Data Acquisition: How It Works and Telematics Solutions<\/title>\n<meta name=\"description\" content=\"Discover how CAN data acquisition works and choose a high-performance telematics solution for fleet management and car sharing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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