INTRODUCTION

• Purpose: Integration of the BCU (Battery Cluster Unit) with EMS/MGC via Modbus TCP.

• Scope: Defines register map, frame format, and functional interfaces.

This protocol reference document is designed to detail the implementation of communication between the BCU (Battery Control Unit) of the energy storage system and EMS / PCS through Modbus TCP.

Audience

This document is intended for the use of engineers both internal and external to Discover Energy who intend to interface with the High Voltage Energy Storage Cabinet through the Modbus protocol. It is expected that the audience has a working knowledge of the Modbus standards for communication. If you are inexperienced in this topic, Discover recommends that you seek help from experienced personnel.