Device Models

This page covers the protocol version thresholds that define device model generations, and provides AC2A-specific details as the reference implementation model.

15.4 Protocol Version Thresholds

Version

Changes

1016

Original protocol

1017

MCU status fields changed; EB3A/AC200M exceptions

1018

Added mcuBusyStatus field

1019

Data field extensions

1020–1023

Incremental additions

2000

V2 protocol — ProtocolAddrV2 register addressing

2001

SYSTEM_TIME register

2003

Extended phase data

2004

SYSTEM_TIME_ZONE register

2005

WORKING_MODE register, CTRL_EVENT

2006–2008

Extended control registers

Key threshold: protocolVer < 2000 → V1 protocol (ProtocolAddr), >= 2000 → V2 (ProtocolAddrV2).

For the AC2A, the minimum protocol version is defined in DeviceConnUtil.getDeviceFunc() and can be overridden by the device’s actual reported version from the base config.

15.10 AC2A-Specific Notes

  • Model code: "AC2A", number 20 in DeviceModel enum

  • Device category: POWER_STATION (portable power station)

  • Protocol: V2 (≥2000), uses ProtocolAddrV2 register addresses

  • Key registers for AC2A:

    • Read: 1100 (base info), 1200 (PV), 1300 (grid), 1400 (load), 1500 (inverter)

    • Write/control: 2011 (AC switch), 2012 (DC switch), 2020 (charging mode), 2209 (output voltage), 2210 (frequency)

  • Firmware upgrade order: IOT(0) → ARM(1) → DSP(2) → BMS(3) → DC_DC(16)

  • Has battery: Yes (built-in)

  • Supports: AC output, DC output, PV input, grid charging, ECO mode, UPS mode, power lifting

  • Device function flags: Defined in DeviceConnUtil.getDeviceFunc("AC2A", protocolVer, ...) which returns a DeviceFunction with ~135 boolean capability flags