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Charger and BMS Modbus Communication Protocol and Register Definition

Overview

This document outlines the Modbus RTU communication protocol and register definitions for the interaction between a battery charger and a Battery Management System (BMS). It details the technical specifications required for seamless data exchange.

Key Protocol Details

Based on Modbus RTU, defining communication parameters like baud rate and data bits.
Specifies message structure including Address, Function Code, Data, and CRC Check Code.
Supports standard Modbus functions for reading and writing registers.
Defines specific registers for monitoring charger and BMS status, such as voltage, current, SOC, and charging mode.
Includes CRC16 checksum calculation for ensuring data integrity.
Provides communication examples for both data reading and modification.

Technical Specification

This technical specification is essential for developers and engineers integrating Yileide battery chargers with BMS systems, ensuring reliable and efficient data communication.

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