Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
1. Introduction
With the rapid adoption of electric vehicles (EVs) and intelligent vehicle architectures, the complexity of in-vehicle electronic control modules (such as the Battery Management System (BMS), Vehicle Control Unit (VCU), and Advanced Driver Assistance Systems (ADAS)) has significantly increased. Automotive technicians face challenges such as high data transmission frequency, multi-module synchronous diagnostics, and real-time requirements during maintenance and troubleshooting.
The traditional CAN (Controller Area Network) protocol is limited in speed and data capacity, making it difficult to meet modern service requirements such as quickly reading large amounts of battery data and conducting real-time multi-module diagnostics. Therefore, this article explores the value and benefits of adopting CAN FD (Flexible Data-rate) in automotive diagnostic systems.
2. Technical Background and Standards Overview
2.1 CAN FD Technical Features
- Higher data transmission rate, up to 8 Mbps, significantly reducing latency.
- Extended frame length, increased from 8 bytes to 64 bytes, enhancing data capacity.
- Flexible data length and timing control, supporting real-time multi-module synchronous diagnostics.
2.2 Key Diagnostic Modules and Data Types
| Module | Main Diagnostic Requirement | Data Type Description |
|---|---|---|
| Battery Management System (BMS) | Simultaneous reading of multiple battery voltages and temperature data for real-time monitoring | Voltage array, Temperature matrix |
| Vehicle Control Unit (VCU) | Extraction of energy management parameters and fault diagnosis | Power flow data, Safety flags |
| Motor Control Unit (MCU) | Monitoring motor operating status and error diagnostics | Torque, RPM, Temperature |
3. Service Station Diagnostic Process and CAN FD Implementation
3.1 Workflow Diagram
3.2 Diagnostic Tool Support
| Diagnostic Tool | CAN FD Support | Remarks |
|---|---|---|
| Vector CANoe | Full support for CAN FD protocol analysis and simulation | Suitable for system development and advanced analysis |
| Xhorse OBD | Partial data retrieval via CAN FD | Support varies by vehicle and module manufacturer |
For more details, refer to “Introduction to Vector CANoe Automotive Test Platform” and “Introduction to Xhorse OBD Diagnostic Tool.”
3.3 Hardware Interface
The OBD II connector remains the standard 16-pin design. However, to enable CAN FD communication, a CAN FD-compatible transceiver is required to ensure stable communication quality and speed.
3.4 System Architecture Topology
[SCAN Tool] ←→ [OBD II Connector] ←→ [CAN FD Bus] ←→ [ECU1] [ECU2] [ECU3]
ECUs must support CAN FD (e.g., STM32FDCAN, Infineon AURIX).
4. Comparison Between Traditional CAN and CAN FD
| Indicator | Traditional CAN | CAN FD |
|---|---|---|
| Data Rate | Approx. 500 kbps ~ 1 Mbps | Up to 8 Mbps |
| Frame Size | 8 bytes | 64 bytes |
| Firmware Update Time | Over 10 minutes | Less than 2 minutes |
| Multi-module Synchronous Diagnostics | With delays | Supports real-time multi-module diagnostics |
| Fault Code Transmission Efficiency | Moderate | Significantly improved |
5. Benefit Analysis and Business Value
5.1 Technical Benefits
- Improved diagnostic efficiency: High-speed and large-frame capacity enable faster, more comprehensive diagnostics.
- Accelerated firmware updates: Faster transmission reduces downtime during module upgrades.
- Enhanced multi-module diagnostics: Supports real-time analysis across multiple modules, improving fault detection accuracy and efficiency.
5.2 Business Benefits
- Improved service quality and customer experience: Faster, more accurate diagnostics shorten service cycles and increase customer satisfaction.
- Reduced operating costs: Automated and efficient processes reduce labor and time requirements.
- Expanded market competitiveness: CAN FD-capable tools cover a wider range of vehicles and modules, enhancing competitiveness.
6. Conclusion and Recommendations
As vehicles become more electronic and intelligent, CAN FD has emerged as a key trend in diagnostic communication. Service stations and related industries should actively adopt CAN FD-compatible diagnostic equipment to optimize diagnostic workflows and improve efficiency.
At the same time, attention should be paid to OBD hardware upgrades and technician training to ensure smooth technology adoption. It is recommended to prioritize mature, well-supported CAN FD diagnostic platforms to gradually build a smarter automotive maintenance ecosystem.
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Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
1. Introduction
With the rapid adoption of electric vehicles (EVs) and intelligent vehicle architectures, the complexity of in-vehicle electronic control modules (such as the Battery Management System (BMS), Vehicle Control Unit (VCU), and Advanced Driver Assistance Systems (ADAS)) has significantly increased. Automotive technicians face challenges such as high data transmission frequency, multi-module synchronous diagnostics, and real-time requirements during maintenance and troubleshooting.
The traditional CAN (Controller Area Network) protocol is limited in speed and data capacity, making it difficult to meet modern service requirements such as quickly reading large amounts of battery data and conducting real-time multi-module diagnostics. Therefore, this article explores the value and benefits of adopting CAN FD (Flexible Data-rate) in automotive diagnostic systems.
2. Technical Background and Standards Overview
2.1 CAN FD Technical Features
- Higher data transmission rate, up to 8 Mbps, significantly reducing latency.
- Extended frame length, increased from 8 bytes to 64 bytes, enhancing data capacity.
- Flexible data length and timing control, supporting real-time multi-module synchronous diagnostics.
2.2 Key Diagnostic Modules and Data Types
| Module | Main Diagnostic Requirement | Data Type Description |
|---|---|---|
| Battery Management System (BMS) | Simultaneous reading of multiple battery voltages and temperature data for real-time monitoring | Voltage array, Temperature matrix |
| Vehicle Control Unit (VCU) | Extraction of energy management parameters and fault diagnosis | Power flow data, Safety flags |
| Motor Control Unit (MCU) | Monitoring motor operating status and error diagnostics | Torque, RPM, Temperature |
3. Service Station Diagnostic Process and CAN FD Implementation
3.1 Workflow Diagram
3.2 Diagnostic Tool Support
| Diagnostic Tool | CAN FD Support | Remarks |
|---|---|---|
| Vector CANoe | Full support for CAN FD protocol analysis and simulation | Suitable for system development and advanced analysis |
| Xhorse OBD | Partial data retrieval via CAN FD | Support varies by vehicle and module manufacturer |
For more details, refer to “Introduction to Vector CANoe Automotive Test Platform” and “Introduction to Xhorse OBD Diagnostic Tool.”
3.3 Hardware Interface
The OBD II connector remains the standard 16-pin design. However, to enable CAN FD communication, a CAN FD-compatible transceiver is required to ensure stable communication quality and speed.
3.4 System Architecture Topology
[SCAN Tool] ←→ [OBD II Connector] ←→ [CAN FD Bus] ←→ [ECU1] [ECU2] [ECU3]
ECUs must support CAN FD (e.g., STM32FDCAN, Infineon AURIX).
4. Comparison Between Traditional CAN and CAN FD
| Indicator | Traditional CAN | CAN FD |
|---|---|---|
| Data Rate | Approx. 500 kbps ~ 1 Mbps | Up to 8 Mbps |
| Frame Size | 8 bytes | 64 bytes |
| Firmware Update Time | Over 10 minutes | Less than 2 minutes |
| Multi-module Synchronous Diagnostics | With delays | Supports real-time multi-module diagnostics |
| Fault Code Transmission Efficiency | Moderate | Significantly improved |
5. Benefit Analysis and Business Value
5.1 Technical Benefits
- Improved diagnostic efficiency: High-speed and large-frame capacity enable faster, more comprehensive diagnostics.
- Accelerated firmware updates: Faster transmission reduces downtime during module upgrades.
- Enhanced multi-module diagnostics: Supports real-time analysis across multiple modules, improving fault detection accuracy and efficiency.
5.2 Business Benefits
- Improved service quality and customer experience: Faster, more accurate diagnostics shorten service cycles and increase customer satisfaction.
- Reduced operating costs: Automated and efficient processes reduce labor and time requirements.
- Expanded market competitiveness: CAN FD-capable tools cover a wider range of vehicles and modules, enhancing competitiveness.
6. Conclusion and Recommendations
As vehicles become more electronic and intelligent, CAN FD has emerged as a key trend in diagnostic communication. Service stations and related industries should actively adopt CAN FD-compatible diagnostic equipment to optimize diagnostic workflows and improve efficiency.
At the same time, attention should be paid to OBD hardware upgrades and technician training to ensure smooth technology adoption. It is recommended to prioritize mature, well-supported CAN FD diagnostic platforms to gradually build a smarter automotive maintenance ecosystem.
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Hailo8 Application – Face Recognition
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Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
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Application of CAN FD in Electric Vehicle Battery Management Systems
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CANbus Will Play Critical Role in Electric and Autonomous Vehicles by OEM OFF-HIGHWAY
Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
1. Introduction
With the rapid adoption of electric vehicles (EVs) and intelligent vehicle architectures, the complexity of in-vehicle electronic control modules (such as the Battery Management System (BMS), Vehicle Control Unit (VCU), and Advanced Driver Assistance Systems (ADAS)) has significantly increased. Automotive technicians face challenges such as high data transmission frequency, multi-module synchronous diagnostics, and real-time requirements during maintenance and troubleshooting.
The traditional CAN (Controller Area Network) protocol is limited in speed and data capacity, making it difficult to meet modern service requirements such as quickly reading large amounts of battery data and conducting real-time multi-module diagnostics. Therefore, this article explores the value and benefits of adopting CAN FD (Flexible Data-rate) in automotive diagnostic systems.
2. Technical Background and Standards Overview
2.1 CAN FD Technical Features
- Higher data transmission rate, up to 8 Mbps, significantly reducing latency.
- Extended frame length, increased from 8 bytes to 64 bytes, enhancing data capacity.
- Flexible data length and timing control, supporting real-time multi-module synchronous diagnostics.
2.2 Key Diagnostic Modules and Data Types
| Module | Main Diagnostic Requirement | Data Type Description |
|---|---|---|
| Battery Management System (BMS) | Simultaneous reading of multiple battery voltages and temperature data for real-time monitoring | Voltage array, Temperature matrix |
| Vehicle Control Unit (VCU) | Extraction of energy management parameters and fault diagnosis | Power flow data, Safety flags |
| Motor Control Unit (MCU) | Monitoring motor operating status and error diagnostics | Torque, RPM, Temperature |
3. Service Station Diagnostic Process and CAN FD Implementation
3.1 Workflow Diagram
3.2 Diagnostic Tool Support
| Diagnostic Tool | CAN FD Support | Remarks |
|---|---|---|
| Vector CANoe | Full support for CAN FD protocol analysis and simulation | Suitable for system development and advanced analysis |
| Xhorse OBD | Partial data retrieval via CAN FD | Support varies by vehicle and module manufacturer |
For more details, refer to “Introduction to Vector CANoe Automotive Test Platform” and “Introduction to Xhorse OBD Diagnostic Tool.”
3.3 Hardware Interface
The OBD II connector remains the standard 16-pin design. However, to enable CAN FD communication, a CAN FD-compatible transceiver is required to ensure stable communication quality and speed.
3.4 System Architecture Topology
[SCAN Tool] ←→ [OBD II Connector] ←→ [CAN FD Bus] ←→ [ECU1] [ECU2] [ECU3]
ECUs must support CAN FD (e.g., STM32FDCAN, Infineon AURIX).
4. Comparison Between Traditional CAN and CAN FD
| Indicator | Traditional CAN | CAN FD |
|---|---|---|
| Data Rate | Approx. 500 kbps ~ 1 Mbps | Up to 8 Mbps |
| Frame Size | 8 bytes | 64 bytes |
| Firmware Update Time | Over 10 minutes | Less than 2 minutes |
| Multi-module Synchronous Diagnostics | With delays | Supports real-time multi-module diagnostics |
| Fault Code Transmission Efficiency | Moderate | Significantly improved |
5. Benefit Analysis and Business Value
5.1 Technical Benefits
- Improved diagnostic efficiency: High-speed and large-frame capacity enable faster, more comprehensive diagnostics.
- Accelerated firmware updates: Faster transmission reduces downtime during module upgrades.
- Enhanced multi-module diagnostics: Supports real-time analysis across multiple modules, improving fault detection accuracy and efficiency.
5.2 Business Benefits
- Improved service quality and customer experience: Faster, more accurate diagnostics shorten service cycles and increase customer satisfaction.
- Reduced operating costs: Automated and efficient processes reduce labor and time requirements.
- Expanded market competitiveness: CAN FD-capable tools cover a wider range of vehicles and modules, enhancing competitiveness.
6. Conclusion and Recommendations
As vehicles become more electronic and intelligent, CAN FD has emerged as a key trend in diagnostic communication. Service stations and related industries should actively adopt CAN FD-compatible diagnostic equipment to optimize diagnostic workflows and improve efficiency.
At the same time, attention should be paid to OBD hardware upgrades and technician training to ensure smooth technology adoption. It is recommended to prioritize mature, well-supported CAN FD diagnostic platforms to gradually build a smarter automotive maintenance ecosystem.
Articles
Use Cases
-
Hailo8 Application – Face Recognition
-
Hailo8 Application – ReID
-
Applications of SUNIX CAN FD Communication Card in Smart Manufacturing
-
SUNIX CAN FD Communication Card in Railway Transportation Applications
-
SUNIX CAN FD Communication Card in MRI Applications
-
External Storage System Application High-Performance Architecture Based on SUNIX OCuLink Expansion Card
-
UPB2430 USB4 Daisy Chain Application: Unlocking a High-Performance Chaining Experience
-
Application of SUNIX CAN FD Communication Card in Smart Mobile Robots (AGV/AMR)
-
Application of SUNIX CAN FD Card in Automotive Repair Station Diagnostic Systems
-
SUNIX CAN FD Card in Modular Energy Storage Systems
-
Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
-
Application of CAN FD in Electric Vehicle Battery Management Systems
-
CANbus Will Play Critical Role in Electric and Autonomous Vehicles by OEM OFF-HIGHWAY
Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
1. Introduction
With the rapid adoption of electric vehicles (EVs) and intelligent vehicle architectures, the complexity of in-vehicle electronic control modules (such as the Battery Management System (BMS), Vehicle Control Unit (VCU), and Advanced Driver Assistance Systems (ADAS)) has significantly increased. Automotive technicians face challenges such as high data transmission frequency, multi-module synchronous diagnostics, and real-time requirements during maintenance and troubleshooting.
The traditional CAN (Controller Area Network) protocol is limited in speed and data capacity, making it difficult to meet modern service requirements such as quickly reading large amounts of battery data and conducting real-time multi-module diagnostics. Therefore, this article explores the value and benefits of adopting CAN FD (Flexible Data-rate) in automotive diagnostic systems.
2. Technical Background and Standards Overview
2.1 CAN FD Technical Features
- Higher data transmission rate, up to 8 Mbps, significantly reducing latency.
- Extended frame length, increased from 8 bytes to 64 bytes, enhancing data capacity.
- Flexible data length and timing control, supporting real-time multi-module synchronous diagnostics.
2.2 Key Diagnostic Modules and Data Types
| Module | Main Diagnostic Requirement | Data Type Description |
|---|---|---|
| Battery Management System (BMS) | Simultaneous reading of multiple battery voltages and temperature data for real-time monitoring | Voltage array, Temperature matrix |
| Vehicle Control Unit (VCU) | Extraction of energy management parameters and fault diagnosis | Power flow data, Safety flags |
| Motor Control Unit (MCU) | Monitoring motor operating status and error diagnostics | Torque, RPM, Temperature |
3. Service Station Diagnostic Process and CAN FD Implementation
3.1 Workflow Diagram
3.2 Diagnostic Tool Support
| Diagnostic Tool | CAN FD Support | Remarks |
|---|---|---|
| Vector CANoe | Full support for CAN FD protocol analysis and simulation | Suitable for system development and advanced analysis |
| Xhorse OBD | Partial data retrieval via CAN FD | Support varies by vehicle and module manufacturer |
For more details, refer to “Introduction to Vector CANoe Automotive Test Platform” and “Introduction to Xhorse OBD Diagnostic Tool.”
3.3 Hardware Interface
The OBD II connector remains the standard 16-pin design. However, to enable CAN FD communication, a CAN FD-compatible transceiver is required to ensure stable communication quality and speed.
3.4 System Architecture Topology
[SCAN Tool] ←→ [OBD II Connector] ←→ [CAN FD Bus] ←→ [ECU1] [ECU2] [ECU3]
ECUs must support CAN FD (e.g., STM32FDCAN, Infineon AURIX).
4. Comparison Between Traditional CAN and CAN FD
| Indicator | Traditional CAN | CAN FD |
|---|---|---|
| Data Rate | Approx. 500 kbps ~ 1 Mbps | Up to 8 Mbps |
| Frame Size | 8 bytes | 64 bytes |
| Firmware Update Time | Over 10 minutes | Less than 2 minutes |
| Multi-module Synchronous Diagnostics | With delays | Supports real-time multi-module diagnostics |
| Fault Code Transmission Efficiency | Moderate | Significantly improved |
5. Benefit Analysis and Business Value
5.1 Technical Benefits
- Improved diagnostic efficiency: High-speed and large-frame capacity enable faster, more comprehensive diagnostics.
- Accelerated firmware updates: Faster transmission reduces downtime during module upgrades.
- Enhanced multi-module diagnostics: Supports real-time analysis across multiple modules, improving fault detection accuracy and efficiency.
5.2 Business Benefits
- Improved service quality and customer experience: Faster, more accurate diagnostics shorten service cycles and increase customer satisfaction.
- Reduced operating costs: Automated and efficient processes reduce labor and time requirements.
- Expanded market competitiveness: CAN FD-capable tools cover a wider range of vehicles and modules, enhancing competitiveness.
6. Conclusion and Recommendations
As vehicles become more electronic and intelligent, CAN FD has emerged as a key trend in diagnostic communication. Service stations and related industries should actively adopt CAN FD-compatible diagnostic equipment to optimize diagnostic workflows and improve efficiency.
At the same time, attention should be paid to OBD hardware upgrades and technician training to ensure smooth technology adoption. It is recommended to prioritize mature, well-supported CAN FD diagnostic platforms to gradually build a smarter automotive maintenance ecosystem.
Articles
Use Cases
-
Hailo8 Application – Face Recognition
-
Hailo8 Application – ReID
-
Applications of SUNIX CAN FD Communication Card in Smart Manufacturing
-
SUNIX CAN FD Communication Card in Railway Transportation Applications
-
SUNIX CAN FD Communication Card in MRI Applications
-
External Storage System Application High-Performance Architecture Based on SUNIX OCuLink Expansion Card
-
UPB2430 USB4 Daisy Chain Application: Unlocking a High-Performance Chaining Experience
-
Application of SUNIX CAN FD Communication Card in Smart Mobile Robots (AGV/AMR)
-
Application of SUNIX CAN FD Card in Automotive Repair Station Diagnostic Systems
-
SUNIX CAN FD Card in Modular Energy Storage Systems
-
Applications and Benefits of CAN FD in Automotive Service Station Diagnostic Systems
-
Application of CAN FD in Electric Vehicle Battery Management Systems
-
CANbus Will Play Critical Role in Electric and Autonomous Vehicles by OEM OFF-HIGHWAY
