Accessing a comprehensive list of available measuring values for modern UDS engine modules, like the CAEB engine with a 06H-907-115-CAB.clb label file, can be challenging. Unlike older systems, there isn’t a simple method to dump this data into a text file for offline review. This article explores techniques for navigating VCDS advanced measuring blocks, understanding group selections, maximizing sample rates, and optimizing data logging with different HEX interfaces.
Decoding VCDS Advanced Measuring Value Locations
VCDS utilizes location codes like IDE and ENG, and sometimes compound locations like IDE00560-MAS04121, in Advanced Measuring Values. While the “group” terminology might be a carryover from older diagnostic systems, understanding these prefixes can be crucial for efficient data retrieval. Whether these prefixes represent distinct groups within the UDS structure or simply categorize data points remains unclear. Experimenting with selecting only IDE locations versus both IDE and ENG locations within VCDS might reveal performance differences, especially concerning sample rates. Further investigation into the specific UDS implementation of the CAEB engine could shed light on this.
Optimizing Sample Rates with Group UDS and HEX Interfaces
The VCDS Advanced Measuring Values Tour page recommends using a single group for maximum sample rate. With a HEX+CAN USB interface, Group UDS seems limited to 8 values. Upgrading to a HEX-V2 or HEX-NET device potentially improves this limitation through the “split” functionality. While the maximum split size might remain 8 for this specific engine module, utilizing two split groups could theoretically allow logging up to 12 or even 16 values simultaneously. Confirmation of the maximum split size and the total number of selectable values with HEX-V2/HEX-NET requires further testing and consultation of official Ross-Tech documentation.
Enhancing VCDS Log File Naming
Currently, VCDS log file names lack unique identifiers beyond the number of values captured. This can lead to difficulties in managing multiple log files. While the appending feature prevents overwriting, incorporating an index counter, date/time stamp, or other unique identifiers into the log file name would significantly improve organization. Submitting a feature request to the official Ross-Tech forum is recommended to address this limitation. Consult the Ross-Tech website for the appropriate forum or feedback channel.
Conclusion: Mastering VCDS Advanced Measuring Blocks
Navigating VCDS advanced measuring blocks for UDS engine modules requires a deeper understanding of location codes, group selection strategies, and the capabilities of different HEX interfaces. Experimentation and consultation of official Ross-Tech resources are vital for optimizing data retrieval and maximizing sample rates. Addressing the log file naming limitation through a feature request will further enhance the usability of VCDS for in-depth vehicle diagnostics.
