Sunsynk 8kW ECCO Hybrid Inverter

These templates cover both the most common data sets and also additional registers which may be useful to users wanting more detailed control of the inverter. It is expected that most users will only require use of 1 or 2 of the included subset templates, depending on their requirements.

The main template, and the accompanying subset templates A, B, C & D, allow you to read and write the modbus registers used by the Sunsynk inverter and should be comprehensive enough for most requirements. These templates have been tested on a specific inverter installation and the included register information is based on that installation. Whilst reading and writing to these registers during testing has not identified any issues, users should note that writing modbus registers may not give the results expected and care should be taken, especially on those registers which may be used for more critical functionality. Users should aim to use as few registers as are required to provide the desired data and/or control and delete those not required in order to avoid impacting on the performance of the modbus device and the Miniserver, particularly in relation to high levels of data being written to the Miniserver SD card.

The main template provides read and/or write access to 135 registers providing comprehensive data extraction and control of the inverter functions.

The following subset templates provide shorter lists of registers which can be used for different levels of data and control.

- Subset A - 6 read only registers to provide basic energy data suitable for use as inputs to the Energy Flow Monitor - Subset B - 35 read only registers to provide more detailed and longer time period energy data, and status information on the inverter, PV and battery system - Subset C - 37 read/write registers (sensor and actuator for each) to provide comprehensive information, configuration and control of most aspects of the inverter installation - Subset D - 57 read/write registers (sensor only) which provide additional data and infomation and which can be used as the basis of additional configuration and control if required.

The register table spreadsheet document provides information on each included register and which subset template contains that register. Actuators are listed at the bottom.

Users should aim to use as few registers as are required to provide the desired data and/or control and delete those not required in order to avoid impacting on the performance of the modbus device and the Miniserver, particularly in relation to high levels of data being written to the Miniserver SD card.

Please note that these templates and additional information are provided as is, with no warranty as to accuracy or suitability for purpose.