Battery knowledge · Data, communication and electronics
CANopen
A higher-layer protocol on CAN used in industrial machines, forklifts and light vehicles; device profiles CiA 418 and 419 define how a battery module and a charger exchange status and limits.
- Also called
- CiA 418, CiA 419
Example
Data, communication and electronics: an example situation
2500 in a log might mean 25.00 °C, 2.5 V or raw counts. Units and scale must accompany the value.
Read CANopen alongside CAN bus in this context. 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.
Use in Lemonergy
Separate quantities from encoding and transport.
This is a reference concept. No executable Lemonergy block has been verified for this term.
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.
- 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.
- 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.