Monitors Solinteg hybrid inverter PV, battery, and grid data via Modbus TCP.
Overview
This template connects Solinteg IntegM Series hybrid inverters to ModbusCloud over Modbus TCP. It reads PV input power for up to four strings, battery state of charge, battery power, and grid power. Compatible models include MHS 3-8K, MHT4-20K, and MHT25-50K.
Key readings
Battery SOC
Battery Power
PV1 to PV4 Input Power
Grid Power
Use cases
Monitor real-time PV production across up to four strings on a live ModbusCloud dashboard.
Track battery state of charge and power flow to verify correct charge and discharge cycles.
Create an alert when grid export or import power exceeds a predefined threshold.
Generate daily or monthly energy production reports for residential solar customers.
Compare PV string performance to detect shading issues or panel degradation over time.
Verify system commissioning by reviewing live Modbus data before handing over to the end customer.
Installation
1Connect the Solinteg inverter to the local network using the LAN module or DuoCom module, plugging the Ethernet cable into the RJ45 port on the communication module.
2Assign a static IP address to the inverter or note its current IP from the inverter display screen or an IP scanning tool.
3Connect your ModbusCloud gateway (MCG or MLP series) to the same local network as the inverter.
4In the ModbusCloud platform, import the Solinteg Hybrid Inverter template and enter the inverter IP address in the connection settings.
5Set the Modbus device address to 255, which is the fixed address for all supported Solinteg IntegM models.
6Save the configuration and verify that PV power, battery SOC, and grid power values appear correctly on your ModbusCloud dashboard.
Things to watch for
01
What Modbus device address should I use for the Solinteg inverter?
The Modbus device address is fixed at 255 for all supported IntegM Series models. Do not change this value.
02
Why does the gateway fail to connect to the inverter?
Verify that the inverter is on the same network subnet as the ModbusCloud gateway. Check that the LAN or DuoCom module is properly seated and the RJ45 cable is connected. A static IP address is recommended to avoid address changes after a router reboot.
03
How are the power register values formatted?
Power registers at addresses 30258 and 11000 are signed int32 (two consecutive registers). PV input power registers use unsigned uint32 format. The template handles this automatically, but keep it in mind if you add custom registers.
04
Can I obtain the full Solinteg Modbus register table?
Contact Solinteg Academy at academy@solinteg.com to request the complete Modbus register documentation for the IntegM Series.
Registers (7)
7 read / 0 write
Name
Address
Function
Type
Unit
Access
Battery SOC
33000
FC03
uint16
%
R
Power - Battery
30258
FC03
int32
kW
R
Input Power - PV1
11062
FC03
uint32
kW
R
Input Power - PV2
11064
FC03
uint32
kW
R
Input Power - PV3
11066
FC03
uint32
R
Grid Power
11000
FC03
int32
kW
R
Input Power - PV4
11068
FC03
uint32
kW
R
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.
