885-0126 AES CAB BAU Overview and EMS/MGC Integration Guide

Full Battery Array Metrics (SBAU)

The following supports Modbus Function Code 03 (Read Holding Registers) only.

Register Address

Data Type

Description

Unit / Notes

1001

UINT16

Battery Stack Total Voltage

0.1 V

1002

UINT16

Battery Stack Total Current

0.1 A, offset +3200

1003

UINT16

Battery Stack SOC

0.1 %

1004

UINT16

Battery Stack SOH

0.1 %

1005

UINT16

Positive Insulation Resistance

kΩ

1006

UINT16

Negative Insulation Resistance

kΩ

1007

UINT16

Cluster Number with Highest Single Cell Voltage

—

1008

UINT16

BMU Number with Highest Single Cell Voltage

—

1009

UINT16

Serial Number of Highest Single Cell Voltage

—

1010

UINT16

Highest Single Cell Voltage

mV

1011

UINT16

Cluster Number with Lowest Single Cell Voltage

—

1012

UINT16

BMU Number with Lowest Single Cell Voltage

—

1013

UINT16

Serial Number of Lowest Single Cell Voltage

—

1014

UINT16

Lowest Single Cell Voltage

mV

1015

UINT16

Cluster Number with Max Temperature

—

1016

UINT16

BMU Number with Max Temperature

—

1017

UINT16

Serial Number of Max Temperature

—

1018

UINT16

Max Cell Temperature

°C (Real data + 40°C)

1019

UINT16

Cluster Number with Min Temperature

—

1020

UINT16

BMU Number with Min Temperature

—

1021

UINT16

Serial Number of Min Temperature

—

1022

UINT16

Min Cell Temperature

°C (Real data + 40°C)

1023

UINT16

Max Cell Voltage Difference

mV

1024

UINT16

Cluster Number with Max Voltage Difference

—

1025

UINT16

Max Temperature Difference

°C

1026

UINT16

Cluster Number with Max Temperature Difference

—

1027

UINT16

Max Cluster Total Voltage

0.1 V

1028

UINT16

Cluster Number with Max Total Voltage

—

1029

UINT16

Min Cluster Total Voltage

0.1 V

1030

UINT16

Cluster Number with Min Total Voltage

—

1031

UINT16

Max Total Voltage Difference

0.1 V

1032

UINT16

Max Cluster SOC

0.1 %

1033

UINT16

Cluster Number with Max SOC

—

1034

UINT16

Min Cluster SOC

0.1 %

1035

UINT16

Cluster Number with Min SOC

—

1036

UINT16

Number of SBCUs in Stack

Real-time value

1037

UINT16

Number of SBMUs in Cluster

—

1038

UINT16

Number of Cells per SBMU

—

1039

UINT16

Number of Temperature Sensors in SBMU

—

1040

UINT16

Max Charging Current Limit of Stack

0.1 A

1041

UINT16

Max Discharging Current Limit of Stack

0.1 A

1042

UINT16

Charge/Discharge Cycle Count

—

1043

UINT16

Today’s Charge Energy

0.1 kWh

1044

UINT16

Today’s Discharge Energy

0.1 kWh

1045

UINT16

Available Charge Capacity

0.1 kWh

1046

UINT16

Available Discharge Capacity

0.1 kWh

1047

UINT32

Accumulated Charge Energy

0.1 kWh

1049

UINT32

Accumulated Discharge Energy

0.1 kWh

1051

UINT32

Stack SOE (State of Energy)

0.1 %