AC coupled firmware revisions
This article will provide ongoing updates with any mass firmware releases with fixes, it will list the latest firmware from top to bottom.
A204-D204 (09 Feb 2024)
1. Export Limit Overflow error Fix.
2. Optimize the battery removal mechanism when receiving the battery sleep instruction
3. Add some certifications for EN50549
4. Added the quick protection function of battery overvoltage interruption
5. Add EMS CPU parallel control parameters
D203-A203 - 12 Dec 2023
1. Add new holding registers from 498 to 508, inverter fail message and BUG voltage
2. Delete the Lithium battery and Lead-acid battery automatic identify function
3. Add a logic: AC coupled will force discharging when BMS is over-charging
4. Optimize the Off Grid Relay
D202-A202 - 22 Aug 2023
1. Optimise AC charge to % to reduce oscillations
2. Many Grid certifications added and tweaked for EU delivery
3. Correct negative temperature sampling (-0.1°C reads 65535°C)
D201-A201 - Initial issue 18 Aug 2023
- New issue of AC coupled firmware fully re-written. Optimised code, offering much faster response times. Feature set as per D535-A535
- Addition of Battery Pause register, allowing for DC pause of battery charge, discharge or both.
- Addition of G100 on/Off flag for Export limitation control
AC coupled (D535-A535) - 12/05/2022
1. Resolves an issue with battery reserve not holding its set percentage.
2. Solves an issue in some abnormal PV readings.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
AC coupled (D533-A534) - 20/10/2021
1.Fixed a communication error in the battery reporting data
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
AC coupled (D533-A533) - 21/06/2021
1.Increase parallel machine function
2.Increase the amount of charge a battery can charge or discharge
3.Optimized battery cell temperature display (previously displayed as 0 for negative numbers)
4.Adds an impedance alarm
5.Optimized when the inverter is not communicating with the battery, the cell data, which was previously displayed as the last data online, is now displayed as 0
6.5S adjustment function
7.Optimized the abnormal problem of PV generating capacity uploading when three electricity meters are enabled
8.Optimized the problem of abnormal display when the load power is greater than 6000W
9.Remove early morning auto restart feature
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
AC coupled (D532-A532) - 16/12/2020
1. Version d532-A532 has not been modified
2. Optimize the operation logic of multiple AC Couple grid-connected parallel connection
3. Remove SOC control charging power logic
4. reserved remote restart BMS function (This function can only be used with version BMS1037 or above）
5. reserved the judgment of whether BMS is inserted like U disk (This function can only be used with version BMS1037 or above）
6. Optimize PV free at night, AC Couple shows PV power problem
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
AC Coupled (D531-A531) - 10/11/2020
1.The overvoltage value of charging was modified from 57.2V to 58.5V.
2.The undervoltage value of discharge was modified from 45V to 43.2V.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------