Operation Mode:

1. The BMS sends operating information (Message 1) to charger at fixed interval of 1s. After receiving the message, the charger will work under the Voltage and Current in Message. If the Message is not received within 5s, it will enter into communication error state and stop charging.

CAN Communication

• Speed: 250Kbps

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Addresses

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Messages

Message 1:

This is the message we send to the charger.

Sender: 0xF4 → BMS

Receiver: 0xE5 → Charger Control System

Rest of the Message: 0x1806

• Priority: 6

• R: 0

• DP: 0 (fixed)

• PF: 6

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Message 2

This is the status message charger sends to us.

Sender: 0xE5 CCS

Receiver: 0x50

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Image Added

CAN Communication:

MCP2515

Richard’s Notes

Notes on Charger CAN Comm:

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