Changelog

23/09/2025 – Prism 4.0.9

• FIX:
  • BALANCING: correct behavior that prevented recharging from starting
  • BALANCING: improved parameter recognition in the two charging modes
  • BALANCING: improved algorithm.
  • OCCP: corrected preauthorization functionality.

06/08/2025 – Prism 4.0.5

• NEW FEATURES
  • Introduced compatibility with new APP
  • Removed local interface for use and guided configuration
  • New balancing algorithm introduced
  • Introduced new session registration and reporting system

08/01/2025 – Prism 3.2.77

• FIX:
  • CONNECTIVITY: Fixed bug that prevented reconnection to wireless network if unstable;
  • DASHBOARD: inserted link to wizard (“settings”);
  • DASHBOARD: hidden charging permission button if cable is disconnected;
  • BALANCE: corrected the loading of the limits of withdrawable power from the grid in Solar and Normal;
  • NIGHT: in case of cluster, slaves cannot activate the mode;
  • WIZARD: improved stability and reading configurations does not cause daemons to restart;
  • WIZARD: removed “CHARGE TO IT” parameter; service configuration will be done by setting the correct OCPP endpoint;
  • POWERWALL: Fixed memory leak during polling;
  • OCPP:
    • Forcing autostart disabled at startup;
    • Sleep removal of 6s in deauthorization;
    • Unlock connector
      • now also works in clusters
      • the charge is deauthorized and stops;
    • Improvements in the state machine: “Finishing” after the first transaction;
    • Fixed “max file descriptors reached” error. In case of CS connection error, the device remains responsive even if the error persists for a long time;
    • StopTransaction.req: now the “reason” is valued correctly;
    • Free mode: the request for authorization to CS is correctly sent.

01/07/2024 – Prism 3.2.71

• FIX:
  • ARERA: default value set to 5500W
  • NIGHT: correct operation for all product models.
  • OCPP: improving the management of SmartCharging

16/11/2023 – Prism 3.2.51

• NEW:
  • New interface for the local dashboard.
  • OCPP: ChangeAvailability also managed during the transaction.
  • OCPP: added support for UnlockConnector message.
  • Added display of phases in the welcome:
    • 
  • Horeca: cards not signed by Silla can be registered on My Silla Cloud by setting the inherent entry on the welcome:
    • 
  • OCPP: It is possible to use OCPP in Free mode by specifying in the welcome the IdTag to be used for permissions to the server:
    • 
  • Wizard: introduced Charge To It:
    • 
• FIX
  • OCPP: the MeterValuesSampledData key now defaults to Energy.Active.Import.Register as per the OCPP specification.
  • OCPP: HeartbeatInterval is now persistent on reboot, even if set via BootNotification.
  • OCPP: added support for the Pending status of the BootNotification message.
  • OCPP: BootNotification with TriggerMessage works as specified.
  • OCPP: In case of Prism Solar S, the only cable connected to the connector sets the Preparing status.
  • OCPP: added control of MeterValueSampleData message format by Central System.
  • OCPP: corrected ChangeConfiguration response about unsupported keys. Prism now responds with NotSupported instead of Rejected.
  • OCPP: keys configured with ChangeConfiguration are all persistent on reboot.
  • Wizard: fixed the problem of 0W display when sensor disconnected.
  • Wizard: now the welcome screen can only be accessed via installer credentials.
  • Wizard: fixed the problem that plagued WiFi networks with spaces within the name preventing connection.
  • Wizard: Replaced https://silla.industries/docs link with silla.industries.
  • Wizard: Replaced the text Enable/Disable with Enabled/Disabled.
  • Cluster: fixed problems that sometimes did not allow card recognition by both OCPP and Horeca.
  • Dashboard: added language button.
  • Dashboard: Limit Value “wrong” => now indicates the Available Current (Ex: 12 out of 32 Amps) when Prism is not charging and indicates the delivered current (Ex: 11.7 A) when Prism is charging.
  • Dashboard: currentMax buttons: added descriptive label “Limit maximum charging current:”.
  • Diagnostics: move inverted Mid reports to the “Energy Measures” section, where phase values are exposed.

8/11/2023 – Prism 3.1.52

• FIX:
  • Cluster: fixed problems that did not allow charging to start via Silla key fob.
  • OCPP: Now it is no longer possible to stop a transaction with a different id tag than the one used to start it.
  • WiFi: fixed the problem that did not allow devices associated with Prism’s WiFi network to surf the Internet.
  • WiFi: now you can connect Prism to a network with spaces and special characters.
  • OCPP: The TriggerMessage is implemented exactly as specified.
  • OCPP: the MeterValuesSampleData key defaults to Energy.Active.Import.Register as per the specification.
  • Balancing: fixed the problem that caused balancing to be turned off when Prism was turned back on.
• NEW:
  • Wizard: added support for 1000A sensor:
    • 
  • Wizard: added support for meters up to 690kW:
    • 

16/01/2023 – Prism 3.1

• FIX:
  • Saving the autostart configuration in the Secondary Prisms for Cluster10:
    • in some cases the configuration was not being saved.
  • Improved saving settings of the Guided Configuration:
    • in some cases it was not going well.
  • Improved connection to Prism’s WiFi:
    • in some cases by trying the wrong password many times the Prism WiFi would fail and a reset was necessary.

16/09/2022 – Prism 2.7

• IMPROVEMENTS:
  • Revised communication with local interface:
    • in case of multiple open screens it was possible to have slowdowns in using local web interfaces.
  • Bilanciamento automatico ricarica:
    • improved behavior in case of frequent fluctuations in available power when the available power is very close to the meter limit, charging may pause and resume very frequently. Now before resuming charging Prism waits 1 minute avoiding frequent pauses in charging;
    • integration of recharge pause for Dacia. Dacia did not resume charging after the pause, a new pause mechanism was introduced that also works with Dacia.
  • Charging management by low power factor:
    • some cars at low currents (6-8 A) charge with a low power factor, which leads to very low charging efficiency (<20%). This resulted in an interruption of charging. Now in these cases, charging continues and is brought to power/current levels where charging efficiency is higher. This problem has been encountered with Zoe, Twingo and ID3.

• FIX:
  • Recharging de-authorization in case of line disturbances: in case of disturbances, recharging was interrupted, leading to de-authorization of recharging. Now in case of disturbances the permission is maintained.
  • Night mode interruption in case of disturbances on the line: in case of disturbances, charging was interrupted, leading to an interruption of night mode. Now in case of disturbances the night mode is maintained wrong charging session in case of disturbances on the line in case of disturbances the charging was interrupted, leading to fragmentation of the charging session and miscalculation of the charging session. Now in case of disturbances the session is correctly measured and displayed.
  • Disabling autostart on reset: in some cases of reset, the autostart configuration was reset to the default value, then disabled. Now the configuration is maintained.

02/28/2022 – Prism 2.5

• IMPROVEMENTS:
  • Added support for Cluster 10.
  • Revised balancing algorithm for better power management.
  • Added configuration wizard for WiFI.
  • Added configuration wizard for WiFI.
  • Management of 10 Solar Prisms in a unified manner.
  • Authentication via RFID CARD for Cluster 10.
  • Optimized communication between Prism and MySilla.
  • Added session report locally on Prism.

11/07/2021 – Prism 2.2

• IMPROVEMENTS:
  • Added support for Arera experimentation.
  • Added configuration wizard for the electrical installation part (BETA).

11/05/2021 – Prism 2.1

• IMPROVEMENTS:
  • Added functionality of enabling charging through RFID key in case of disabled autostart.
  • Added new pairing procedure for RFID keys – new RFID keys can be paired via the pageSetup-> impostazioni -> Gestione RFID.
  • Added recharge authorization button in the local Prism interface.
  • Fixed bugs that caused the setup interface to crash during saving in some cases.
  • Improved MQTT communication.
  • Fixed communication problem with Powerwall version 21.20.2.
  • Added option photovoltaic available on the balance settings page.
  • Improved upgrade procedure.

03/22/2021 – Prism 2.0a

• IMPROVEMENTS:
  • Aggiornamento a OpenWRT versione 19.07:
    • Improved stability of the system and WiFi connection;
    • SAFETY FIX.
  • Nuova grafica:
    • grouping of options;
    • Simplified interface for configuration;
    • Available languages: English and Italian.
  • Improved balancing algorithm.
  • Added authentication to Powerwall interface.
  • Fixed MQTT communication bugs.
  • Preparation for ARERA trial.

• Solo per Prism V2 (con seriale Axxxxx e fw v0.131):
  • Added option to disable touch key.
  • Adjustable LED brightness.
  • Sounds that can be turned off.
  • Deactivatable button.
  • Signaling on overcurrent error LED.
  • Improved RS485 communication stability for three-phase balancing.
  • Improved compatibility with Tesla Model 3.
  • Changing modes even when the car is disconnected.
  • Various bugfixes.

22/03/2021 – Prism 1.4a

• IMPROVEMENTS:
  • New section on settings page for manual update of Prism.
  • Touch controls: mode change (normal/solar).
  • Charging pause.
  • New home load balancing system.
  • Integration with Tesla Powerwall V2.
  • Displaying the local IP of Prism.
  • Saving the charging current set by the user.
  • Improved compatibility with Tesla Model 3.
  • Improved temperature management.
  • Improved remote control interface and app.
  • System security updates.
  • MQTT utente:
    • Edited topic names;
    • Added topics for touch and knock controls, and of power measurements taken;
    • Improved client reliability.