{"id":340,"date":"2025-08-28T17:38:03","date_gmt":"2025-08-28T17:38:03","guid":{"rendered":"https:\/\/docs.qilowatt.eu\/docs\/fronius\/"},"modified":"2025-10-30T10:03:46","modified_gmt":"2025-10-30T10:03:46","password":"","slug":"fronius","status":"publish","type":"docs","link":"https:\/\/docs.qilowatt.eu\/en\/docs\/fronius\/","title":{"rendered":"Fronius"},"content":{"rendered":"\n

Introduction<\/h2>\n\n
Fronius inverters can be connected to the Qilowatt system using a Modbus module. This guide explains the necessary settings, module installation, and startup steps. <\/div>\n\n

Prerequisites<\/h2>\n\n
\u2022 The inverter is operational and configured according to the manufacturer\u2019s instructions\u2022 A Modbus R1 or R2 module is available\u2022 Required tools and a communication cable (CAT5 or CAT6)\u2022 A Qilowatt account has been created and the app is ready for adding devices \u2192 Creating a user account<\/a><\/div>\n\n

Step-by-step Guide<\/h2>\n\n

Configuring the inverter in the Fronius web interface<\/h3>\n\n
1.<\/strong> Open the Fronius web interface<\/strong> and go to the Modbus Data Export <\/strong>view.2. <\/strong>Configure the following settings:\u2022 Modbus RTU Interface 1:<\/strong> slave\u2022 Baud Rate:<\/strong> 9600\u2022 Parity:<\/strong> none\u2022 SunSpec Model Type:<\/strong> int + PF\u2022 Inverter Address:<\/strong> 3\u2022 Inverter Control via Modbus:<\/strong> On<\/div>\n\n

Installing the module<\/h3>\n\n
1.<\/strong> Install the MODBUS R1 \/ R2 module<\/strong> according to the installation manual.2. <\/strong>Connect the communication cable (CAT5 or CAT6) between the module\u2019s RS485 port and the inverter\u2019s Modbus port:\u2022 M1+ \u2192 A<\/strong>\u2022 M1- \u2192 B<\/strong><\/div>\n\n

Starting the module<\/h3>\n\n
1.<\/strong> Switch on the circuit breaker of the MODBUS R1 \/ R2 module (or insert the fuse).2. <\/strong>Check if the module\u2019s white LED indicator<\/strong> starts flashing rapidly.3.<\/strong> Connect the module to your home WiFi network \u2192 Connecting the device to WiFi.<\/a>\u2022<\/strong> Place the module where the WiFi signal is strong.\u2022 Use a WiFi range extender if necessary.<\/div>\n\n

Result<\/h2>\n\n
The Fronius inverter is successfully connected to the Qilowatt system. The Modbus module transmits data and enables device control and energy optimization. <\/div>\n\n

If it Doesn’t Work<\/h2>\n\n
\u2022 If the LED indicator does not light up, check the connections and circuit protection.\u2022 If communication does not work, verify that the Modbus settings in the web interface are correct.\u2022 If the module does not connect to WiFi, follow the guide \u2192 Resetting WiFi settings<\/a>.\u2022 If the issue persists, contact our team: support@qilowatt.eu<\/a>. <\/div>\n\n

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