BLF file

Example

Use in Lemonergy

Separate quantities from encoding and transport.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

ASC file

The plain-text form of a bus log, one frame per line with time, channel, identifier and data bytes. It is larger than BLF but readable in any editor; PEAK’s .trc files are a similar text trace from their interfaces.

CAN bus

The serial network over which a BMS talks to the vehicle or inverter: a two-wire differential bus, defined in ISO 11898, carrying short prioritised messages at up to 1 Mbit/s, or faster with CAN FD. Every node hears every message, and a dominant bit wins arbitration without any collision.

Data logger

A device on the vehicle or bench that records bus traffic and sensor data to BLF or MDF4 files, often with triggers and remote upload. For field failures it is the black box from which the sequence of events is rebuilt.

DBC file

The de-facto text format, from Vector, that describes a CAN network: which messages exist, their identifiers and timing, and how each signal is packed, scaled and named. Without the BMS’s DBC a CAN log is just numbers.

MDF4

The ASAM standard binary format for measurement data, version 4 with the .mf4 extension: it stores decoded signals and raw bus frames side by side with their units, conversions and timestamps, compressed and indexed so large logs open quickly. It is the common exchange format for vehicle and battery test data.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

1. 3rd generation of the CAN data link layer

   CAN in Automation, CAN Newsletter · 2020

   Topic background · Classical CAN, CAN FD and CAN XL data-link concepts; publication describes the 2020 state.

2. Getting Started with the BQ76925

   Texas Instruments · 2019

   Topic background · A concrete BMS analog front-end example: cell voltage, current, temperature measurement and MCU integration.