Free Modbus template: SOFAR Solar Inverter | ModbusCloud
Modbus RTU
SOFAR Solar Inverter
SOFAR Solar
Reads PV and grid values from SOFAR Solar inverters via Modbus RTU.
Overview
This template reads PV and grid values from SOFAR Solar inverters via Modbus RTU. It provides PV1 voltage, current, and power, three-phase grid measurements, grid frequency, output active power, and daily and total energy production.
Key readings
PV1 voltage, current, power
A/B/C-phase voltage
A/B/C-phase current
Grid frequency
Output active power
Today and total production
Use cases
Monitor PV1 voltage, current, and power on a live cloud dashboard for your customer.
Track daily and total energy production to verify system yield over time.
Create an alert when grid frequency deviates from the expected range for more than five minutes.
Compare three-phase voltage and current across A, B, and C phases to detect imbalance.
Export historical production data as reports for maintenance visits or energy audits.
Add multiple SOFAR Solar inverters on one RS485 bus and monitor them from a single dashboard.
Installation
1Connect the ModbusCloud gateway (MCG or MLP series) A and B terminals to the RS485 port on the SOFAR Solar inverter, observing correct polarity.
2Set the inverter Modbus slave address to a unique value using the inverter display or configuration tool.
3Confirm the inverter serial communication settings are 9600 baud, 8 data bits, 1 stop bit, no parity.
4Import the SOFAR Solar Inverter template in the ModbusCloud platform and assign it to the correct gateway port.
5Enter the configured Modbus slave address in the template settings and verify that live data appears on the dashboard.
Things to watch for
01
No data appears after connecting the gateway to the inverter. What should I check?
Verify that the RS485 A and B wires are not swapped. Confirm the slave address in ModbusCloud matches the address configured on the inverter. Make sure the baud rate is set to 9600 on both devices.
02
PV1 power or total production values look incorrect or extremely large. Why?
These registers use uint32 format across two consecutive registers. Ensure the template is imported without manual register edits. If you modified registers, check that the data type is set to uint32 and the register order matches the SOFAR Solar documentation.
03
Can I monitor multiple SOFAR Solar inverters on the same RS485 bus?
Yes. Assign each inverter a unique Modbus slave address and create a separate template instance in ModbusCloud for each address. All inverters share the same two-wire RS485 connection to the gateway.
04
The output active power value seems too low. Is there a scaling issue?
Output active power and PV1 power are expressed in kW in this template. Confirm you are not comparing kW values with W values from another source. The template applies the correct scaling automatically.
Registers (13)
13 read / 0 write
Name
Address
Function
Type
Unit
Access
PV1 voltage
6
FC04
uint16
V
R
PV1 current
7
FC04
int16
A
R
PV1 power
12
FC04
uint32
kW
R
Grid frequency
17
FC04
uint16
Hz
R
Total production
24
FC04
uint32
kWh
R
Output active power
15
FC04
uint16
kW
R
Today production
28
FC04
uint16
kWh
R
A-phase voltage
18
FC04
uint16
V
R
B-phase voltage
20
FC04
uint16
V
R
C-phase voltage
22
FC04
uint16
V
R
A-phase current
19
FC04
uint16
A
R
B-phase current
21
FC04
uint16
A
R
C-phase current
23
FC04
uint16
A
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.
