The gateway cannot connect to the Swatten inverter over Modbus TCP. What should I check?

Verify that both the gateway and inverter are on the same subnet. Confirm the inverter IP address, TCP port (usually 502), and that no firewall or VLAN rules block the connection.

Which Modbus unit ID should I use?

Swatten inverters typically default to unit ID 1. If you have changed it in the inverter settings, make sure the same value is configured in the ModbusCloud device instance.

Can I control battery charging and discharging remotely?

Yes. The template includes writable registers for battery charge and discharge commands. Ensure the inverter firmware supports remote write operations and that write access is not disabled in the inverter configuration.

Does this template work with all Swatten models listed?

The template supports SIH single-phase, SIH-SL, SIH three-phase, and all-in-one storage systems as listed in the compatible models. If your model is not on the list, the register map may differ and correct operation is not guaranteed.

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Free Modbus template: Swatten Hybrid | ModbusCloud

///Swatten Hybrid

Modbus TCP

Swatten Hybrid

Name: Swatten Hybrid
Brand: Swatten
SKU: 014a29a3-356c-4384-8a3e-301b68742a53

Swatten

Monitors and controls Swatten hybrid inverters and PV storage systems via Modbus TCP.

Overview

This template connects Swatten hybrid inverters and all-in-one PV storage systems via Modbus TCP. It reads PV system status and enables active power reduction and battery charge/discharge commands. Compatible with single-phase and three-phase models from 3 kW to 50 kW.

Key readings

PV system status

Available commands

Active power reduction
Battery charge/discharge command

Use cases

Monitor real-time PV system status and inverter operating data on a cloud dashboard for remote oversight.
Send active power reduction commands to comply with grid operator curtailment requirements.

Issue battery charge or discharge commands to optimise self-consumption or leverage time-of-use tariffs.

Create alerts when inverter status indicates a fault or unexpected shutdown.

Track daily and cumulative solar production across multiple Swatten inverters on a single site.

Compare performance of single-phase and three-phase Swatten units installed at different customer locations.

Installation

1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the Swatten inverter via Ethernet.
2Ensure Modbus TCP is enabled on the Swatten inverter and note the IP address and TCP port (typically port 502).
3Log in to the ModbusCloud platform, add a new device, and select the Swatten Hybrid template from the template library.
4Enter the inverter IP address and port in the device configuration and confirm the Modbus unit ID matches the inverter setting.
5Verify that PV system status readings appear on the dashboard, then test a control command such as active power reduction to confirm write access.

Things to watch for

The gateway cannot connect to the Swatten inverter over Modbus TCP. What should I check?: Verify that both the gateway and inverter are on the same subnet. Confirm the inverter IP address, TCP port (usually 502), and that no firewall or VLAN rules block the connection.
Which Modbus unit ID should I use?: Swatten inverters typically default to unit ID 1. If you have changed it in the inverter settings, make sure the same value is configured in the ModbusCloud device instance.
Can I control battery charging and discharging remotely?: Yes. The template includes writable registers for battery charge and discharge commands. Ensure the inverter firmware supports remote write operations and that write access is not disabled in the inverter configuration.
Does this template work with all Swatten models listed?: The template supports SIH single-phase, SIH-SL, SIH three-phase, and all-in-one storage systems as listed in the compatible models. If your model is not on the list, the register map may differ and correct operation is not guaranteed.

Working with Modbus in your projects?

ModbusCloud is the hardware-plus-software platform that installers use to monitor, visualise and control Modbus devices from one portal. This template is one of hundreds you can use right away.

See the live demo How it works

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Specifications

Protocol: Modbus TCP
Brand: Swatten
Registers: 0
Compatible models: SIH-3kW-SHSIH-3.6kW-SHSIH-4kW-SHSIH-6kW-SHSIH-8kW-SHSIH-10kW-SHSIH-3.6kW-SLSIH-5kW-SLSIH-6kW-SLSIH-5kW-THSIH-6kW-THSIH-8kW-THSIH-10kW-THSIH-10kW-TH-PROSIH-15kW-THSIH-20kW-THSIH-25kW-THSIH-30kW-THSIH-40kW-THSIH-50kW-THAll-in-one sys-5kW-SHAll-in-one sys-6kW-SHAll-in-one sys-8kW-SHAll-in-one sys-10kW-SHAll-in-one sys-5kW-THAll-in-one sys-6kW-THAll-in-one sys-8kW-THAll-in-one sys-10kW-THAll-in-one sys-5kW-TH PROAll-in-one sys-15kW-THAll-in-one sys-20kW-TH PRO
Last updated: 17 April 2026

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