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How to connect SMA Solar Technology devices with Reduxi controller

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⚡ Reduxi Controller · Knowledge Base

How to connect SMA Solar Technology devices with Reduxi controller

Reduxi-SMA integration enables flexible inverter commissioning for grid balancing, boosts efficiency and creates cost-saving arbitrage opportunities for higher profits.

🔧 SMA Data Manager, Speedwire/Webconnect Data Module or SMA inverter with LAN port · Reduxi Controller
🌐 Modbus TCP/IP
🔢 Port 502

📄 Download as PDF

Photo of the SMA Data Manager M, white housing with SMA logo and green LEDs
SMA Data Manager M (distributor image)
Text description of this image

Product photo of the SMA Data Manager M on a white background: a white, wide DIN-rail style housing seen from above at an angle. The top cover shows the SMA logo in a round field with green status LEDs and the text DATA MANAGER at the lower left. Rows of small printed terminal and port labels run along the top edge and the front edge, with terminal blocks and network ports along the lower front.

📋 In this article
  1. Technical documentation
  2. Required equipment and connection options
  3. Enable Modbus TCP/IP on the SMA device
  4. Log in to the Reduxi web interface
  5. Add the SMA device to Reduxi
  6. Check the readings
  7. Summary
  8. Common issues
  9. Related articles

1 Technical documentation

Manufacturer pages and manuals:

2 Required equipment and connection options

2.1 Required equipment

  • Reduxi Controller
  • SMA Data Manager, SMA Speedwire/Webconnect Data Module or an SMA inverter with a LAN port (see Point 2.2)
  • IP address of the SMA device
  • Laptop or tablet with internet access to configure the device in Reduxi

2.2 Connection options

The Reduxi system supports several connection options. All of them use the Modbus TCP/IP protocol to interface with the inverters. This standard approach enables reliable, real-time data acquisition from your photovoltaic inverters and other devices.

Option Hardware What it does
1 SMA Data Manager Bridge between inverters, energy meters and batteries. Reduxi shows all devices per category as a sum.
2 SMA Speedwire/Webconnect Data Module Gives the inverter LAN communication and enables Modbus TCP/IP.
3 Direct LAN connection to the SMA inverter No additional hardware. Inverters with a LAN port communicate via Modbus TCP/IP.

3 Enable Modbus TCP/IP on the SMA device

3.1 Option 1: SMA Data Manager

The devices are connected to the SMA Data Manager via RS485. The SMA Data Manager connects to the Reduxi system via Modbus TCP/IP. Reduxi sums up and shows all devices per category:

  • PV
  • Batteries
  • Energy meters
  • EVSE

Enable Modbus TCP/IP on the SMA Data Manager as described in the SMA online manual.

Steps for grid measurements

SMA Data Manager M, Configuration ' Grid management service, Active power row highlighted
Step 1: Grid management service – Active power
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Screenshot of the SMA Data Manager M web interface. Header: SMA logo, text SMA DATA MANAGER M, breadcrumb bar with MFE Megras 1,2,3,4 and Select Device. Left icon bar: Dashboard, Monitoring, Configuration (selected). Configuration menu under MFE Megras 1,2,3,4 System: System properties, Device administration, Parameter, Device parameter adjustment, Grid management service (highlighted with a red box), Meter configuration, Licensed functions. Main page titled Grid management service, a table with rows: Active power (red box) with link Configuration & activation; Reactive power with link Configuration & activation; Assign analog outputs with text: To use this function, a I/O system with analog outputs must be implemented in your system.; Assign digital outputs with the same kind of text for digital outputs; Recording of setpoints with link Configuration & activation; Country data set with link Go to Configuration.

SMA Data Manager Grid management service step 2: Open loop control, Modbus ticked, direct selling interface on
Step 2: operating mode and selection of the setpoint
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Screenshot of the SMA Data Manager web interface, page Grid management service (with info icon), tall image. Step tabs: 1. STEP, 2. STEP (active, blue), 3. STEP and 4. STEP (greyed). Red error banner: Before you can enable the closed-loop control function, you must set the energy meter (set the energy meter is a blue link). Section Select operating mode, Operating mode*: radio Open loop control selected (red box); Closed loop control greyed out, not selected. Section Selecting the setpoint, Signal sources*: checkboxes Analogue inputs (not ticked), Manual control (not ticked), Digital inputs (not ticked), Modbus (ticked, red box). Large red box around the text: If your system participates in the direct selling, you can activate the necessary interface here in the communication device. Inside it: Direct selling interface: toggle on; radio Standard Modbus interface selected; radio SMA SPOT not selected. At the bottom: buttons Cancel, Previous, Continue (blue, filled).

SMA Data Manager Grid management service step 3: Active power gradient 50 %/s in red box
Step 3: modification speed of the setpoint
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Screenshot of the SMA Data Manager web interface, page Grid management service (with an info icon). Step tabs: 1. STEP, 2. STEP, 3. STEP (active, blue), 4. STEP (greyed). Section heading: Modification speed of the setpoint. Toggle Active: on. Fields: Setting time*: 1, unit s; Active power gradient*: 50, unit %/s (this field is marked with a red box).

3.2 Option 2: SMA Speedwire/Webconnect Data Module

The module gives the inverter LAN communication (see point 2.4 in the SMA document linked in ⁠Point 1⁠) and enables Modbus TCP/IP.

Enable Modbus TCP/IP on the module as described in the SMA manual. Then test the connection (see ⁠Point 3⁠).

3.3 Option 3: direct LAN connection to the SMA inverter

No additional hardware is needed. The inverter has a LAN port that enables communication via Modbus TCP/IP.

Connect to the software interface of the inverter and activate Modbus TCP/IP. Then test the connection (see ⁠Point 3⁠).

3.4 Test port 502

After you have enabled Modbus TCP/IP, test the connection in the Reduxi Configurator. Use the controller IP address or reduxi.local to open it (see ⁠Point 4⁠).

  • Open the Reduxi Configurator.
  • Go to Settings – System – Tools.
  • Run the TCP port test with the IP of the SMA device and port 502.
Reduxi Configurator menu Settings ' System ' Tools, TCP port test highlighted with red box
Settings – System – Tools
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Screenshot of the left navigation menu of the Reduxi Configurator (logo: reduxi Configurator). Menu entries from top: Devices (+, collapsed; first letters cut off at the left edge); Strategies (+, collapsed); Utility Rate Plan; Settings (expanded, minus sign) with sub-entries Grid, Network, System (expanded, minus sign) with sub-entries Identifier, License, Update, Reboot, Factory reset, Tools (expanded, minus sign) with sub-entries Ping test, TCP port test (highlighted with a red box), Address scanner; then Profile (+) and Users. The right part of the image is empty white.

SMA Data Manager Grid management service step 2: Open loop control, Modbus ticked, direct selling interface on
SMA Data Manager settings (see Point 3.1)
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Screenshot of the SMA Data Manager web interface, page Grid management service (with info icon), tall image. Step tabs: 1. STEP, 2. STEP (active, blue), 3. STEP and 4. STEP (greyed). Red error banner: Before you can enable the closed-loop control function, you must set the energy meter (set the energy meter is a blue link). Section Select operating mode, Operating mode*: radio Open loop control selected (red box); Closed loop control greyed out, not selected. Section Selecting the setpoint, Signal sources*: checkboxes Analogue inputs (not ticked), Manual control (not ticked), Digital inputs (not ticked), Modbus (ticked, red box). Large red box around the text: If your system participates in the direct selling, you can activate the necessary interface here in the communication device. Inside it: Direct selling interface: toggle on; radio Standard Modbus interface selected; radio SMA SPOT not selected. At the bottom: buttons Cancel, Previous, Continue (blue, filled).

If Modbus TCP/IP is enabled, the test reports that port 502 is open. Otherwise the port is closed.

Reduxi Configurator TCP port test: host 10.100.55.128, port 502, result Port 502 is opened
TCP port test: Port 502 is opened
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Screenshot of the Reduxi Configurator tool TCP port test. Title: TCP port test. Fields: Host: 10.100.55.128; Port: 502; button Test. Below, label Result and a result box with green text: Port 502 is opened.

4 Log in to the Reduxi web interface

You can open the Reduxi web interface in two ways:

Remote
📱
Reduxi app
Via tunnel connection · works from anywhere
🖥️
Web browser
In the local network · via IP address or reduxi.local
📱 4.1 Via the Reduxi app
1
Open the app and log in
Launch the Reduxi app on your smartphone or tablet and log in with your credentials.
2
Open Reduxi devices
Tap the menu icon (three lines, top left) and select Reduxi devices.
3
Activate the tunnel connection
Switch on the tunnel connection and wait a moment until it is active.
4
Open the configurator
Tap Open configurator. The Reduxi web interface opens.
Reduxi app: menu icon (2), Reduxi devices (3), Activate tunnel connection button (4)
Activate the tunnel connection (step 3)
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Screenshot of three Reduxi mobile app screens side by side, with cyan boxes and number badges 2 to 4. Left screen (dashboard, dark theme): menu icon at top left marked with a box and badge 2; 'reduxi' logo; tabs 'Real time data' (active) and 'Statistics'; price 5.79 € and temperature 3.2 °C; energy flow diagram with a house in the centre (-1.25 kW) and icons with values 69.0 W, 1.3 kW, 1.1 kW (red ring), -165.0 W with 97 % (red ring) and 0.0 W values at the bottom; tabs 'Power' and 'Energy'; bottom navigation: Dashboard, Diagnostics, Device control, Settings. Middle screen (side menu): 'reduxi' logo, 'Number of locations: 1233', heading 'Reduxi device management', entries '+ Add Reduxi location' and 'Reduxi devices' (marked with a box and badge 3), then 'My profile' and 'About app'. Right screen (device page): Back; picture of a black Reduxi controller with two Ethernet ports; status 'Connected'; card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'; card 'Connect to configurator': 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' with button 'Activate tunnel connection' (marked with a box and badge 4); card 'Unit details' with field 'Unit ID'.

Reduxi app Open configurator button (step 5) and Reduxi Configurator tunnel connection home screen (step 6)
Open configurator (step 4)
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Screenshot made of two parts side by side. Left part: Reduxi mobile app screen on a dark background. Top: Back button; picture of a black Reduxi controller with two Ethernet ports and a terminal block; status 'Connected' with a Wi-Fi icon. Card 'Update available': 'New update is available for your Reduxi device.' with button 'Download and install update'. Card 'Connect to configurator' with a key icon: 'Tunnel connection enables remote access to your Reduxi configurator, without need to be connected to the same local network.' and button 'Open configurator', marked with a cyan box and number badge 5. Below: card 'Unit details' with a field 'Unit ID' (value not visible). Right part: Reduxi Configurator opened in a browser, marked with a cyan frame and number badge 6. Header: back arrow, 'Tunnel connection', reload icon. Left sidebar with icons (lightning, chip, lightning bolt, bar chart, gear). Page 'Home' with a green link icon. Green notice: 'New patch available. Click here to apply.' with a close X. Time 09:12:56. Energy flow diagram with a house in the centre (1.700 kW) and icons for grid (0.000 kW), solar (1.700 kW), battery (green, 0.000 kW and 0.800 kW), a device at left (0.900 kW), electric vehicle and a charger or device at bottom. Label 'Energy manager' at the bottom.

🖥️ 4.2 Via a web browser
1
Open the login page
On a device in the same network, open a web browser and enter the controller's IP address or http://reduxi.local. You can find the controller's IP address in your router's device list or in the Reduxi app under Reduxi devices.
2
Log in
Username: admin · Password: admin (factory default)
Reduxi Configurator login page at address reduxi.local, address bar marked
Reduxi Controller login screen
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Screenshot of the Reduxi Configurator login page in a Chrome browser window. The address bar shows 'Not secure' and 'reduxi.local'; the address bar is marked with a cyan box and an enlarged copy of it (cyan box, text 'Not secure reduxi.local') is shown at the left, connected by a cyan line. Page background: light grey line drawing of a house with solar panels (green), a wall box, an inverter, a car and a charger. Top left: 'reduxi configurator' logo. Login box in the centre with title 'Login', a language selector (English flag, 'English'), a username field and a password field, and a dark 'Login' button.

Reduxi Configurator home screen after login: energy flow with house 24.20 kW, grid 24.20 kW, EV charger 31.00 kW
Controller web interface after login
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Screenshot of the Reduxi Configurator web interface after login, light theme. Top left: 'reduxi configurator' logo. Header bar: 'Home' at left, green 'Connected' status at top right. Left sidebar: expanded section 'Devices' with a list of entries, then collapsed sections 'Manager' and 'Configuration' and 'Settings'. Main area: energy flow diagram. House in the centre with ring, value 24.20 kW. Grid icon at top left, 24.20 kW (red dot on its line). Solar icon at top right, value '-'. Left icon (battery or device), 6.700 kW (green dot on its line). Right icons (battery storage and a device), values '-'. EV charger icon at bottom left, 31.00 kW. A further device icon at bottom right. Label 'Energy manager' below the house.

5 Add the SMA device to Reduxi

The process is the same for all devices, because the Modbus TCP/IP protocol is used. The IP address of the device is the necessary input.

5.1 Basic settings

Log in to the Reduxi Configurator (see ⁠Point 4⁠) and click + Add device.

Reduxi Configurator left menu: blue arrow pointing at the + Add device button under Devices
The + Add device button
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Screenshot of the top of the Reduxi Configurator left menu. Logo: reduxi Configurator. Devices (expanded, minus sign) lists two entries with names blacked out (first with a battery and sun icon, second with an inverter-type icon). Below them the button + Add device, with a blue black-outlined arrow pointing at it. Then Strategies (+), Utility Rate Plan, Settings (+).

Option 1: SMA Data Manager

The SMA Data Manager works as a logger. In the Reduxi system it operates as a Hybrid Inverter, because it supports connections to several device types. Communication runs via IP and Reduxi shows the aggregated values of each group. You can also access individual devices through the SMA Data Manager. In this case, define the slave address of the specific device.

  • Device type: Hybrid Inverter
  • Type: SMA Data Manager
  • Name: SMA Data Manager, rename if needed
Reduxi Configurator basic settings: device type Hybrid Inverter, type SMA Data Manager, name SMA Data Manager
Basic settings: SMA Data Manager
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Screenshot of the Reduxi Configurator device wizard, step 1 Basic settings. Step indicator: 1 Basic settings (active), 2 Communication channel (greyed). Heading: Basic settings. Fields: Device type *: Hybrid Inverter; Type *: SMA Data Manager; Name *: SMA Data Manager (text selected/highlighted). Buttons: Back, Next.

Options 2 and 3: SMA inverter

You do not add the SMA Speedwire/Webconnect Data Module itself. The module only provides LAN connectivity to a specific inverter. Select the type of the inverter you want to connect. The example adds an SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41) as an individual inverter.

  • Device type: Solar power plant
  • Type: SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41)
  • Name: SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41), rename if needed
Reduxi Configurator basic settings: device type Solar power plant, type SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41)
Basic settings: SMA Sunny Tripower CORE1
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Screenshot of the Reduxi Configurator device wizard, step 1 Basic settings. Step indicator: 1 Basic settings (active), 2 Communication channel (greyed). Heading: Basic settings. Fields: Device type *: Solar power plant; Type *: SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41); Name *: SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41). Buttons: Back, Next.

Click Next.

5.2 Communication settings

Option IP address to enter
1: SMA Data Manager IP of the SMA Data Manager
2: Speedwire/Webconnect Data Module IP of the SMA Speedwire/Webconnect Data Module
3: direct LAN connection IP of the LAN port of the inverter (newer inverter versions)

For options 2 and 3, all other settings are the same as for the inverter in Point 5.1.

Option 1: SMA Data Manager. Enter the IP of the SMA Data Manager.

Reduxi Configurator SMA Data Manager communication settings: TCP/IP, IP field empty, port 502
Communication settings: IP of the SMA Data Manager
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Screenshot of the Reduxi Configurator, step 2 of 2 Communication channel (step 1 Basic settings, step 2 Communication channel). Form Communication channel and device configuration: Connection (required): TCP/IP; IP (required): empty, with a black arrow pointing at the field; Port (required): 502; Modbus unit ID (required): 2; Is electricity meter installed (required): toggle set to No; Is battery installed (required): toggle set to No. Buttons: Back (left), Test communication and Done (right, dark).

Then define which device types are connected to the SMA Data Manager:

  • Electricity meter: YES / NO
  • Battery: YES / NO
Reduxi Configurator step 2: Modbus unit ID 2, electricity meter and battery toggles both No, arrows
Connected electricity meter and battery
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Screenshot of the Reduxi Configurator device wizard, step 2 Communication channel. Step indicator: 1 Basic settings, 2 Communication channel (active). Heading: Communication channel and device configuration. Fields: Connection *: TCP/IP; IP *: empty; Port *; Modbus unit ID *: 2; Is electricity meter installed? *: toggle showing No (off), with a black arrow pointing at it; Is battery installed? *: toggle showing No (off), with a black arrow pointing at it. Buttons: Back, Test communication, Done.

Options 2 and 3: SMA inverter. Enter the IP of the SMA Speedwire/Webconnect Data Module, or the IP of the LAN port of the inverter.

Reduxi Configurator step 2 Communication channel: Connection TCP/IP, IP empty with arrow, Port 502
Communication settings: IP of the module or inverter
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Screenshot of the Reduxi Configurator, step 2 of 2 of the device wizard. Step indicator: 1 Basic settings, 2 Communication channel (step 2 active). Heading: Communication channel and device configuration. Fields: Connection *: TCP/IP (dropdown); IP *: empty, with a large black arrow pointing at the field; Port *: 502. Buttons: Back, Test communication, Done.

5.3 Test communication

Click Test communication to check whether data is received. It reads the device once and saves nothing. If the test succeeds, click Done: only Done creates the device.

Reduxi Configurator step 2: black arrow pointing at the Test communication button
The Test communication button
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Screenshot of the Reduxi Configurator device wizard, step 2 Communication channel. Step indicator: 1 Basic settings, 2 Communication channel (active). Heading: Communication channel and device configuration. Fields: Connection *: TCP/IP; IP *: empty; Port *: 502; Modbus unit ID *: 2; Is electricity meter installed? *: toggle showing No (off); Is battery installed? *: toggle showing No (off). Buttons: Back, Test communication, Done. A large black arrow points at the Test communication button.

SMA Data Manager

Reduxi Configurator Test communication dialog: Successful readout from device with inverter and PV values
Test OK
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Screenshot of a dialog titled Test communication in the Reduxi Configurator. Text: Successful readout from device. Values: Inverter active power: -165521.0 W; Inverter max. power: 300000.0 W; Inverter min. power: -300000.0 W; PV active power: -165521.0 W; PV export active energy: 1.180973984E9 Wh; PV min. active power: -300000.0 W. Last line: Additional parameter - PV_POWER_ACTIVE_MAX: 0. Button: Close. Close cross at top right.

Reduxi Configurator Test communication failed: unable to communicate with 172.16.233.148 on port 502
Test not OK
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Screenshot of a dialog titled Test communication in the Reduxi Configurator, showing a failed test. First box: Unable to communicate with device. Second box (red-brown text): Unable to communicate with 172.16.233.148 on port 502. Check if service is enabled on device, port number is correct and device is reachable on the network. PING 172.16.233.148 (172.16.233.148) 56(84) bytes of data. --- 172.16.233.148 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1070ms. Button: Close. Close cross at top right. Part of the form behind the dialog is faintly visible at the right edge.

SMA inverter (options 2 and 3)

Reduxi Configurator Test communication dialog: Successful readout, active power -23779.0 W
Test OK
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Screenshot of a dialog titled Test communication in the Reduxi Configurator. Text: Successful readout from device. Values: Active power: -23779.0 W; Export active energy: 205291550 Wh; Max. active power: 0 W; Min. active power: -50000 W; PV current: -45.122 A; PV voltage: 556.1867 V. Button: Close. Close cross at top right.

Reduxi Configurator Test communication failed: unable to communicate with 172.16.233.148 on port 502
Test not OK
Text description of this image

Screenshot of a dialog titled Test communication in the Reduxi Configurator, showing a failed test. First box: Unable to communicate with device. Second box (red-brown text): Unable to communicate with 172.16.233.148 on port 502. Check if service is enabled on device, port number is correct and device is reachable on the network. PING 172.16.233.148 (172.16.233.148) 56(84) bytes of data. --- 172.16.233.148 ping statistics --- 2 packets transmitted, 0 received, 100% packet loss, time 1070ms. Button: Close. Close cross at top right. Part of the form behind the dialog is faintly visible at the right edge.

6 Check the readings

6.1 Last measurements

This step shows how to check the readings of the devices.

SMA Data Manager: open Devices – SMA Data Manager in the Reduxi Configurator.

Reduxi Configurator SMA Data Manager Last measurements: Connected, Control type Auto, PV active power -182.0 kW
Last measurements: SMA Data Manager
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Screenshot of the Reduxi Configurator, page Devices / SMA Data Manager, tab Last measurements (other tabs: Analyze, Archive, Details). Top right: green status Connected. Left menu: Devices (expanded) with three entries blacked out (sun icons) and SMA Data Manager (selected), button Add device, then Strategies (+), Utility Rate Plan, Settings (+). Card Control type: toggle with Auto (highlighted green) and Manual; timestamp 20. 06. 2025 13:02:08. Card Battery: Battery maximum capacity (Wh): 0.0 kWh; Battery min. state of charge: 0.00 %; Battery max. state of charge: 100.00 %; Battery active power setpoint: empty, unit kW. Card PV: PV active power: -182.0 kW; PV export active energy: 1,183,606.3 (unit cut off); PV min. active power: -300.0 kW. Card Inverter: Inverter power active: -182.0 kW; Inverter max. power: 300.0 kW; Inverter min. power: -300.0 kW. Card Grid: Grid import active power limit: empty, kW; Grid export active power limit: empty, kW. Card Other: Communication error: OFF; Control type: AUTO; Mode name setpoint: empty. Measurement timestamps are 20. 06. 2025 13:02:12 (Communication error 13:02:08).

SMA inverter via Speedwire/Webconnect Data Module: open Devices – SMA Sunny Tripower CORE1 (STP 50-40 / STP 50-41), as added in ⁠Point 5⁠.

Reduxi Configurator SMA Sunny Tripower CORE1 Inverter measurements: Connected, Communication error ON
Last measurements: SMA Sunny Tripower CORE1
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Screenshot of the Reduxi Configurator, page Devices / SMA Sunny Tripower CORE1 Inverter, tab Last measurements (other tabs: Analyze, Archive, Details). Top right: green status Connected. Banner: New patch available. Click here to apply. (with close cross). Left menu: Devices (expanded) with three entries partly blacked out (grid, sun and battery icons), button Add device, Strategies (+), Utility Rate Plan, Settings (+). Card Control type: Auto (highlighted green), Manual, Off, Boost; timestamp 20. 06. 2025 13:10:41. Card Current: PV current: 0.01 A. Card Voltage: PV voltage: 542.79 V. Card Power: Active power: -2.0 kW; Export active power: 2.0 kW; Export active power limit: empty, kW; Import active power: 0.0 kW; Max. active power: 0.0 kW; Min. active power: 0.0 kW. Card Energy: Export active energy: 36,991.1 kWh. Card Other: Communication error: ON; Control type: AUTO. Most values are timestamped 14. 06. 2025 08:17:57 or 08:17:58; Communication error 20. 06. 2025 13:10:45 and Control type 13:10:49.

6.2 Enable control by Reduxi

For advanced control of all devices, integrate the devices into the optimization modes of the Reduxi system. Under Devices – all devices in the Reduxi Configurator, set the control type to AUTO. Only then do commands from the optimization modes take effect on the devices.

To achieve maximum flexibility and energy cost reduction with dynamic prices and dynamic tariffs, define a strategy as described in Strategies for Reduxi controller.

After you have added the device, you can also monitor and control it via the Reduxi application.

✓ Summary

Preparation (Points 1–2): Choose the connection option: SMA Data Manager, SMA Speedwire/Webconnect Data Module or direct LAN connection to the inverter.

SMA (Point 3): Enable Modbus TCP/IP on the SMA device and test that port 502 is open.

Add to Reduxi (Points 4–5): Log in to the Configurator and add the device: SMA Data Manager as Hybrid Inverter, or the inverter type for options 2 and 3. Enter the IP, run Test communication and click Done.

Go live (Point 6): Check the last measurements and set the control type to AUTO.

→ Common issues

Issue Solution
The port test shows port 502 as closed Modbus TCP/IP is not enabled on the SMA device. Enable it (see ⁠Point 3⁠) and run the test again.
Test communication fails: unable to communicate on port 502 Check that the service is enabled on the device, that the port number is correct and that the device is reachable on the network.
A device behind the SMA Data Manager shows no values To access an individual device through the SMA Data Manager, define the slave address of that device (see ⁠Point 5⁠).
Strategy commands have no effect Set the control type of the devices to AUTO (see ⁠Point 6⁠).
Open configurator does not open or stays empty The tunnel is not active yet. Wait about 30 seconds and check that the controller is online.
Login with admin is rejected The password was changed during installation. Ask the installer. The Reduxi account password does not work here.
reduxi.local does not load Your device is not in the same network as the controller. Use the IP address or the tunnel connection.
Communication test fails, device shows offline Check reachability, IP address / port / unit ID, and that the protocol is enabled on the device.

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