Remote monitoring and maintenance of large solar power plants

System monitoring, remote diagnosis, data storage and visualization: the Sunny WebBox is the high-performance communication hub for medium- to large-scale solar power plants. It continuously collects all the data from the inverters on the system side, thereby keeping you informed of the system‘s status at any given time. The Sunny WebBox is a multi-functional, energy-efficient data logger which offers a wealth of options for displaying, archiving and processing data, even in networks with strict security regulations. In case of the event “Error”, the WebBox informs you immediately by e-mail or text message*.



  • Remote monitoring, diagnosis and configuration of the solar power system from anywhere in the world
  • Data logger for all key plant data


  • Rapid detection of operation failures
  • Error notification via e-mail or text message


  • Easy remote access via a web browser
  • Includes free standard access to the Sunny Portal for the entire service life of the system


  • Flexible display, evaluation, yield and event reports via the Sunny Portal
  Sunny WebBox
Inverter communication RS485, 10/100 Mbit Ethernet (only for Sunny Central)
PC-communication 10/100 Mbit Ethernet
Modem Analog (optional), GSM (optional)
Data Interface Modbus TCP, RPC
Inverter 1x SMACOM
Ethernet 10/100 Mbit, RJ45
Max. number of SMA devices  
RS485 / Ethernet 50 / 50
Max. communication range  
RS485 / Ethernet 1200 m / 100 m (3937 ft / 328 ft)
Bluetooth (unobstructed)
Power supply  
Power supply external plug-in power supply
Input voltage 100 V – 240 V AC, 50 / 60 Hz
Power consumption Typ. 4 W/ max. 12 W
Environmental conditions in operation  
Ambient temperature –20 °C ... +55 °C (–4 °F ... +131 °F)
Relative humidity 5% ... 95%, non-condensing
Internal 8 MB in a ring memory configuration
External SD card 1 GB / 2 GB (optional)
General data  
Dimensions (W / H / D) in mm (in) 255/ 130 / 57 (10 / 5 / 2)
Weight 750 g (2 lb)
Mounting location indoors
Installation options DIN rail installation, wall mounting, tabletop device
Status display LEDs
Language versions (software, manual) German, English, French, Greek, Italian, Korean, Dutch, Portuguese, Spanish, Czech
Operation Integrated Web server (Internet browser)
Warranty: 5 years yes
Certifi cates and approvals
Sunny SensorBox connection via RS485 Power
SMA Bluetooth Repeater
Sunny Matrix opt.
SD card 1 GB / 2 GB opt.
Outdoor GSM antenna opt.
GSM data card opt.
RS485 communication cables opt.
Plug-in power supply with adapters yes

Version 1.52 (June 2011)

Easy Commissioning
- Simplified commissioning in just six steps through the support of SUNNY WEBBOX ASSISTANT incl. the possibility of configuration saving.

Greater Flexibility - enhancement of the Modbus interface by adding new device profiles.

Better Informed
- Improved error management for SUNNY BACKUP through automatic or manual call up of the event / error log and transmission via FTP-Push.

General Improvements - Optimization of the internal data processing
With firmware 1.52 information of the following devices is available via the standardized Modbus interface (updated or newly added):

  • Sunny Central 250U
  • Sunny Central 500CP
  • Sunny Central 500HEUS
  • Sunny Central 500U
  • Sunny Central 630CP
  • Sunny Central 720CP
  • Sunny Central 760CP
  • Sunny Central 800CP
  • Sunny Central Control
  • Sunny Central String-Monitor Controller (SCSMC)
  • Sunny String-Monitor (SMU8)
  • Sunny String-Monitor US (SSMUS)
  • Sunny Tripower xxxxx TL-10


  • Perform a data upload to Sunny Portal before an update procedure using the SD card. If no data upload to Sunny Portal is performed, data saved since the last upload might possibly get lost when updating the firmware using the SD card.
  • If you have deactivated the Sunny WebBox automatic firmware update function, you can carry out the update manually via the web interface or update the Sunny WebBox with the help of the update file in the download area and an SD card.

Version 1.51 (August 2010)

Performance Features:

Performance improvements – Data transmission via the analog and GSM modem, SD card access and web interface response are considerably faster.

Modbus data interface – To query inverter data. Further information can be found in the Modbus profile description in the download area.

Sunny Central firmware updates – The Sunny Central firmware can be updated via the web interface of the Sunny WebBox, thus avoiding servicing on-site.

Simplified device exchange – As of now, the deletion of both the portal buffer and the channel list, which is necessary during device exchanges, can also be done at the "Installer" access level.

Simplified error analysis – Error codes are shown on the web interface with an error description and information on error elimination.

Support of new device types – Updates for the devices supported; device types to follow can be loaded using an SD card.

If you have deactivated the Sunny WebBox's automatic firmware update, you can carry out the update manually using your Sunny WebBox's web interface.

Note: if your Sunny WebBox is connected via an analog modem, it is impossible to carry out an update from firmware 1.50 to firmware 1.51 via the modem. Instead, you can download the firmware from the download area (from September 1, 2010) and update your Sunny WebBox using an SD card.

Version 1.5 (november 2009)

  • Quickly informed - Realtime and direct messaging based on inverter error processing via E-Mail and optional via SMS by using the Sunny WebBox with GSM modem.
  • Cost savings – Reduction of the operating GSM costs of your monitoring system based on the reduction of the uploaded data volume (depending on inverter type)
  • Increased availability – Use the comfortable direct access to your Sunny WebBox via the Internet even with GSM option (“GPRS always on” is for example provided by the recommended plans of the Deutsche Telekom)
  • Multilingual - Additional software languages (KR/GR) for a worldwide usage

Information: For security reasons the access to the ftp server of the Sunny Webbox is intentionally not possible without knowing the password of the system. Have a look at the technical description version 3.0 for the new handling.

Version 1.46 (may 2009)

  • security update – visualization of password security level including information to generate secure passwords.

Have a look on the FAQ to find more information about this update and „security“ in general.

Version 1.45 (January 2009)

This firmware update includes the following changes and improvements:

  • FTP-Push feature – Flexible data upload to the server of your choice
  • Proxy server support - Support of a proxy server including authentication
  • Addition of the menu languages Portuguese, Dutch and Czech
  • Logo adjustment

The update can be performed from the user interface of your WebBox.

Version 1.44 (January 2009)

  • Requirement for firmware version 1.45


Version 1.43 (January 2008)

  • Debugging of Version 1.42
    You can carry out the update via the web-interface of the WebBox.

Version 1.42 (December 2007)

  • Support of the Powerline Adapters SWR-COM-USB
  • Support of SD Memory Cards up to 2 GBytes
  • Data Downlaod via HTTP
  • Addition of the FTP Download (authentication)
  • Addition of French as menu language

Version 1.41 (May 2007)

  • Support for GSM Modem and Sunny Backup
    RPC Data interface

Version 1.40 (March 2007)

  • GSM Modem Support
  • Direct dial-in in the WebBox via analogue and GSM Modem

Version 1.38 (March 2007)

  • Improved compatibility with Sunny SensorBox
  • Extended support of Sunny Central systems
  • CSV-export improved
  • Update of the daylight saving time change function

Version 1.30 (September 2006)

  • Compatibility with Sunny Central and Sunny Island devices
  • Improved operator interface
  • General improvements

Version 1.22 (March 2006)

  • A rare problem in the transmitting of data via an analogue modem has been resolved

Version 1.20 (February 2006)

  • Configurable data recording in CSV format
  • Improved device list
  • problem of numerous new-starts resolved
  • Editable system identifier
  • Energy values are no longer reset after a new-start
  • Support for USB Powerline Modem (SWRCOM-USB)

Version 1.11F/1.12F (October 2005)

  • SD Card recognition faster and more reliable.
  • Change over of the SD Card to the TFAT file system. Through this the data security is increased in the case of an unexpected new-start.
  • In isolated cases the WebBox could freeze on start-up. This problem has been resolved.
  • The accuracy of the internal clock has been improved.



SUNNY WEBBOX - Firmware-Update 1.53F12
Type: Firmware
Language: International
Document number: WbApplication_1.53F12
Version number: 1.53F12
Data sheet

SUNNY WEBBOX - Remote monitoring and maintenance of large solar power plants
Type: Data sheet
Language: English (US)
Document number: WEBBOX-DUS131916
Version number: 1.6
User Manual

SUNNY WEBBOX - User Manual
Type: User Manual
Language: English (US)
Document number: SWebBox-BA-US_en-34
Version number: 3.4

SUNNY WEBBOX RPC - Remote-Procedure-Call Description/Interfaces and API Definition - User Manual
Type: User Manual
Language: English (US)
Document number: SWebBoxRPC-eng-BUS112713
Version number: 1.3

SUNNY WEBBOX - Quick reference guide for commissioning
Type: User Manual
Language: English (US)
Document number: SWebbox-SE-eng-BUS115012
Version number: 1.2
Installation Guide

RS485 - Cabling Plan / Asignación del cableado / Principe du câblage
Type: Installation Guide
Language: English (US)
Document number: 485VERK-eng-spa-fra-TUS110711
Version number: 1.1