UA-5231/2241/7231 Release Note Important Notice: Since v1.4.2.0, this product no longer supports Internet Explorer. [2026-06-18] v1.5.8.7 [Beta] Bug fix 1. Fixed the issue where v1.5.8.6 was missing the SearchIP and DB logging main program. [2026-06-02] v1.5.8.6 [Beta] New/Improved 1. Improved the web firmware update process; if firmware decompression fails, the system can revert to the pre-update state. 2. Improved the UI response when executing advanced settings for a project. 3. Improved the issue of advanced settings being cleared after a firmware update. Bug fix 1. Fixed an issue where module-to-SNMP settings might remain after updating a project. 2. Fixed an issue where the Web Secure (HTTPS) service failed to start. [2026-05-21] v1.5.8.5 [Beta] New/Improved 1. Adjusted the Server Name response format for OPC UA support in Utilities. Bug fix 1. Fixed an issue where the interval in seconds was hidden in the InfluxDB connection UI when the record mode was Cycle. [2026-05-20] v1.5.8.4 [Beta] New/Improved 1. InfluxDB connection functionality 2. Database diagnostic messages 3. Modbus to MQTT conversion added to all publishing options 4. System Settings -> Controller Service Settings -> Project Settings -> Advanced Options added Socket health check mechanism 5. OPC UA DisplayName no longer displays Modbus attribute strings - default enabled (custom setting in this version, the original default behavior will be restored in the official firmware). [2026-05-17] v1.5.6.5 New/Improved 1. Utility supports OPC UA Server Name response. 2. OPC UA Server Name can be edited and configured. 3. OPC UA Server settings add an export name option to hide the Modbus attribute prefix. Bug fix 1. Fixed the issue where module-to-SNMP settings might remain after updating a project. [2026-05-14] v1.5.6.3 [Beta] New/Improved 1. DDNS settings adjustment requires manual service restart for the changes to take effect 2. MSSQL connection settings adjustment no longer requires the inclusion of entity names Bug fix 1. Fixed the issue where the number of Registers might exceed the 125 limit when using Long/Float/Double in Modbus modules 2. Fixed the issue where UA-2241's LAN2 IP could not download OPC UA Server credentials when logging into the webpage. [2026-03-31] v1.5.4.35 [Beta] New/Improved 1. Improved the loading speed of values on the module settings page, preventing null values or abnormal characters from appearing during operations. [2026-03-18] v1.5.4.34 [Beta] New/Improved 1. Enhanced UI error prevention mechanism: When the backend cannot obtain the configuration file, it automatically provides an empty data structure to prevent null or undefined values from appearing on the frontend. Bug fix 1. Fixed the issue of unsynchronized Scaling settings when copying modules. [2026-03-10] v1.5.4.33 [Beta] New/Improved 1. Adjusted the DBus communication API, improving error prevention handling when the service is not started and the stability of multi-threaded initialization. 2. Improved the issue of SD card directory creation conflicts caused by disconnection updates in multi-connection scenarios for MySQL/InfluxDB. [2026-02-24] v1.5.4.32 [Beta] New/Improved 1. Removed incorrect jQuery version annotations from HTML files to avoid false positives from weak scanning tools. [2026-02-10] v1.5.4.31 [Beta] New/Improved 1. Added the UpdateComPortSetting function to the UA-5231/UA-2241 platforms: When firmware updates detect XV-511i, the UI will display the Serial Port setting. 2. Adjusted the ChangeComPortSetting behavior: No setting changes are made when XV-511i is not inserted. [2026-01-30] v1.5.4.30 [Beta] New/Improved 1. PostgreSQL related UI is only displayed on UA-2841; it is not displayed on other platforms (UA-5231/UA-2241/UA-7231). 2. Merged MySQL horizontal record and offline correction functions. [2026-01-29] v1.5.4.27 [Beta] Bug fix 1. Fixed the issue where the UI did not display downloadable Datalog archives. [2026-01-19] v1.5.4.26 [Beta] New/Improved 1. Add Project advanced Setting to System Setting > Controller Service Setting 2. Add a reconnection delay mechanism to MQTT Service to avoid frequent retries 3. Optimize OPC UA DisplayName display: Removed unnecessary Modbus attribute strings (v1.5.4.26 only) [2026-01-05] v1.5.4.22 [Beta] New/Improved 1. Adjusted the MQTT Service to prevent situations where it cannot be woken up after sleeping. Bug fix 1. Fixed the issue where the UI menu was not displayed when switching to MQTT after enabling Scaling in Modbus RTU settings. [2026-01-02] v1.5.4.20 [Beta] New/Improved 1. Added PostgreSQL Client support (UA-2841 only) Bug fix 1. Fixed the issue where UI checkboxes were not checked when converting RTU and TCP modules to MQTT. [2025-12-08] v1.5.4.16 [Beta] New/Improved 1. Adjusted the naming of logger settings in both Chinese and English. 2. After manual and automatic time synchronization settings are completed, the system will prompt the time synchronization method used. 3. Added support for Utility TCP search function. 4. Fixed the project's local IP address to 127.0.0.1 to prevent MQTT from failing to connect when other UAs are imported into the project. 5. DisplayName no longer contains the Modbus attribute string (only applicable to v1.5.4.16) Bug fix 1. Fixed the issue where an empty Client ID caused connection failure during MQTT test connection. 2. Fixed the issue where the SNMPD service failed to start after changing the IP address due to IP binding. 3. Fixed the issue where the Modbus Driver Function 05 parameter was not initialized, causing the compiler to automatically assign a non-zero value, resulting in multiple write attempts. 4. Fixed an issue in version v1.5.4.11 where AI Scaling points were incorrectly displayed in the OPC UA DisplayName (applies only to v1.5.4.16) [2025-11-06] v1.5.4.11 [Beta] New/Improved 1. OPC UA DisplayName optimization: Removed unnecessary Modbus attribute strings. (Applicable only to v1.5.4.11) [2025-10-31] v1.5.4.10 [Beta] Bug fix 1. Fixed an issue where the UI Real-time Information page might become unresponsive for an extended period after a firmware update. 2. Fixed an error about information display in the [Status] field of I/O Status. [2025-10-15] v1.5.4.8 [Beta] Bug fix 1. Fixed the issue where the EZ-UAQ Utility password verification could not be modified. [2025-09-15] v1.5.4.7 New/Improved 1. SNMP Agent support 2. Ping Echo enable/disable setting 3. Modbus RTU timeout retry interval setting 4. SearchIP response method changed to broadcast 5. OpenVPN and interface configuration support 6. Horizontal Data field writing support 7. Scaling points can be written into MSSQL database 8. Supported EZ UAQ Utility version 2.4.32 and later 9. Added JS Parser function to Runtime, providing the following logic control functions: - Timer control - Tag value access - Email - Cron schedule - FRAM access Bug fix 1. Fixed Modbus IOStatus display anomaly 2. Fixed MSSQL initialization screen display error 3. Fixed issue where MQTT custom XML file was not generated correctly 4. Improved MSSQL delayed write performance 5. Fixed issue where first MySQL record was not written [2025-01-08] v1.4.6.32 [Beta] Bug fix 1. Fixed the issue where the MQTT custom service XML file was not generated correctly. 2. Corrected an error in the "Record Mode" field content within the MSSQL connection UI settings. [2024-11-24] v1.4.6.20 [Beta] New/Improved 1. Allowed third-party programs to be embedded in the project file and executed by the UA. (Applicable only to v1.4.6.20) [2024-11-13] v1.4.6.10 [Beta] Bug fix 1. Fixed an issue causing MQTT Will to malfunction. [2024-09-09] v1.4.6.5 [Beta] New/Improved 1. MQTT JSON is now fixed to send all data periodically. (Applicable only to v1.4.6.5) [2024-08-20] v1.4.6.4 [Beta] Bug fix 1. Fixed an issue where the system log would not regenerate after being cleared. 2. Fixed an issue where the first MSSQL record was not being written. [2024-06-10] v1.4.6.0 New/Improved 1. Added whitelist function. 2. OPC UA added new Security Policy and certificate host can add IP information. 3. Added System Log function, including: - Record IP information - TCP connection status - Web service status - CPU usage - MQTT Broker connection test status 4. Account password setting adds strong password check. 5. With EZ-UAQ utility support IPV6 and alias display. 6. Adjusted the width of some interface fields in UI. 7. Updated Web UI package version. 8. System information adds battery status display. Bug fix 1. Improved the problem of UI save content error. 2. Improved MS SQL/My SQL record function repeated data writing problem. [2023-09-11] v1.4.2.0 New/Improved 1. XVBoard module supports XV107/107A/110/111/111A/116/119/303/306/307/310. 2. DataLog function adds time alignment. 3. MySQL DataLog function adds time alignment. 4. MSSQL DataLog function adds time alignment and Offline Data Recovery setting. 5. ModbusTCP&RTU adds CSV format import setting. 6. Time setting adds selectable cities for timezone. 7. MQTT client function adds connection test feature. 8. MQTT Client adds client ID setting field. 9. With EZ-UAQ utility support the following functions: - Log file download - Project setting file download - Firmware update - Reduce CPU usage - Communication protocol detailed information (TCP, UDP, Protocol, Port) - CSV format export Modbus related settings 10. OPC UA Server setting interface adds user and password setting. 11. Update MySQLlib to 5.7.33 to support MySQL 8.0. Bug fix 1. Fixed the path error when downloading Local DataLog files. 2. Prevent the failure of saving files when the project variables exceed 4000. 3. Fixed the routing logic of model 2241 to avoid Gateway routing errors when using multiple networks. 4. Fixed the IP display error in IPV6 setting interface. 5. Fixed the issue that the content in "MS SQL List" of MSSQL data record function cannot be removed. 6. Adjusted the operation process of MQTT IoT Cloud in the Function Wizard area. 7. Fixed the problem that Broker crashes due to MQTT Broker setting error. 8. Fixed the problem that the system does not automatically log out after no one operates the web for more than 15 minutes. 9. Fixed the problem that the file size may be 0 bytes when uploading MQTT Broker certificate from the web to UA. 10. Fixed the problem of missing security setting parameters in OPC UA Server setting interface. 11. Fixed the problem that the certificate content is old settings when downloading OPC UA certificate. 12. Fixed the problem that special characters cannot be entered in MySQL function password setting. 13. Fixed the problem of high system CPU usage when PV or SV points of PID are disconnected. [2022-06-22] v1.4.0.5 Bug fix 1. Fixed the display error of network IP setting mode. 2. Fixed calendar date not changing after time zone change. UA-2241 OS update The operating system is changed to Ubuntu. [2022-01-10] v1.4.0.0 New/Improved 1. Web Function: Add HTTPS Service. 2. Network Function: Add IPV6 Setting. 3. MQTT Broker: Add Security and WebSocket Connection. 4. OPC UA Server Function: Add Options of Security and Self-Signed Certificate Setting. 5. Advanced Setting: Add Dynamic Block List Function. UA-5231 OS update The operating system is changed to Ubuntu. [2021-09-02] v1.3.3.2 New/Improved 1. Added MQTT format customization setting function. 2. Added time stamp field in MQTT JSON format. 3. Updated the MQTT package to version 2.0.11 to improve connection stability. Bug fix 1. Fixed the problem that the broker will be closed when the web service crashes. 2. Fixed the new setting not reloading after uploading the project. 3. Fixed the problem that when the MQTT Client is abnormally disconnected, the memory usage increase. 4. Fixed the operation being locked when an error occurs in the web page update function. [2021-03-08] v1.3.2.5 New/Improved 1. System time will be written into RTC every day. [2021-02-17] v1.3.2.4 New/Improved 1. Improved the support of firmware in older versions of OS. [2021-02-17] v1.3.2.3 New/Improved 1. Added ICPDAS WISE, ET/PET, DL, tM series module setting table. 2. When logging in from web for the first time, the user must change the default account password. Bug fix 1. After updating the firmware via the Web, the login screen may not appear. [2021-02-05] v1.3.2.2 New/Improved 1. Improved MS SQL connection's query Server command, reduce SQL Server load. Bug fix 1. Fixed the problem of RTC writing time error. [2020-12-11] v1.3.2.0 Bug fix 1. The "I/O Status" function cannot display the specific name tag problem. 2. Fixed USB update may fail. 3. MQTT Service cannot publish when the initial value is 0. [2020-11-06] v1.3.1.9 New/Improved 1. Web Added 8G and 512M hardware information. 2. Added DL-1020, DL-1021, DL-1022, DL-1023, DL-1038 module setting table. 3. MS SQL Data Logger function added "DataChange" mode. Bug fix 1. Fixed PID function cannot be added to Modbus Scale tags. 2. Fixed the interface message is not cleared after adding new tag in MQTT Service setting. [2020-11-02] v1.3.1.8b1 Bug fix 1. Fixed the problem that the monitoring and restarting function may cause web update failures. [2020-08-24] v1.3.1.5 New/Improved 1. Added OPC UA Client To Client function. [2020-08-05] v1.3.1.8 New/Improved 1. Monitoring and restart function to detect runtime status (every 30 seconds) 2. Added DataChange mode to MySQL connection record mode setting. [2020-08-03] v1.3.1.7 New/Improved 1. Modbus RTU/ASCII function Added ReWrite Count setting. [2020-07-24] v1.3.1.6 Bug fix 1. Fixed the 1.3.1.3 version bug to avoid Modbus RTU/ASCII receiving data when timeout or idle. [2020-06-10] v1.3.1.3 Bug fix 1. Connect to multiple Modbus RTU/ASCII devices, one of which is disconnected will cause other normal devices unable to write. [2020-06-10] v1.3.1.2 Bug fix 1. Fixed Modbus Driver write failure error. [2020-06-05] v1.3.1.1 New/Improved 1. Scaling tag supports writing function. 2. Web Added firmware update function. [2020-05-25] v1.3.1.0 New/Improved 1. Added support for Int64 type. [2020-04-28] v1.3.0.5 New/Improved 1. Automatically logout if no one operates web within 30 minutes. 2. Keep project settings when updating via USB. 3. Improved response time of NTP Client calibration. Bug fix 1. Modbus Driver type short negative value conversion error. 2. Modbus ASCII interface display error after project import. 3. Some module settings cannot be displayed when importing project files. 4. USB update failure when Micro SD card is inserted (after version 1.3.0.5). 5. OPC UA certificate setting may become invalid after importing the project. [2020-03-04] v1.3.0.2 New/Improved 1. Modbus RTU/TCP Added Scaling and Bitwise operations, and supports OPC UA conversion. 2. Datalog function adds MySQL/MariaDB database support. 3. Web interface displays the status of system resource usage. 4. File setting function adds local datalog file download. 5. Improve the web setting interface of 3G/4G, OPC UA and MQTT functions. Bug fix 1. Modbus RTU/ASCII module setting data error. 2. Database connection function, data record time anomaly. [2019-09-25] v1.2.5.0 Bug fix 1. Modbus RTU/ASCII slave ID cannot be repeated in different serials. 2. When using "Select The Module" function, the same model cannot be repeatedly selected. [2019-09-16] v1.2.4.0 New/Improved 1. Support XV511i expansion board for UA-2241M model. [2019-08-08] v1.2.3.0 New/Improved 1. Support MQTT client to connect Baidu cloud. 2. Reduce dialing failure of 3G/4G modem. Bug fix 1. MQTT JSON function receives Message, program exception occurs. [2019-07-07] v1.2.1.0 New/Improved 1. Support UA-2241M model. Bug fix 1. OPC UA security connection function failure in version 1.2.0.0. 2. Modbus timeout setting fails when the timeout parameter is greater than 1 second. [2019-06-21] v1.2.0.0 New/Improved 1. Added remote database connection function and support MS SQL. 2. Added local data log function, save in MicroSD card. 3. Support ICPDAS EIP-2000 (Ethernet/IP) series modules. 4. Added credential verification function in MQTT client. 5. MQTT client can connect to the Amazon Web Services IoT platform. Bug fix 1. MQTT client causes program blocking when the network is offline. Others 1. Update the OpenSSL version of the OS system. [2018-07-10] v1.0.2.4 New/Improved 1. Support UA-5231-4GE/4GC model. [2018-04-18] v1.0.2.2 New/Improved 1. Improve user experience of the new web interface architecture. 2. Support UA-5231-3GWA model. 3. Added I/O status display function. 4. Added MQTT device function in UI. 5. Added IFTT connection function. 6. Added Azure connection settings interface. Bug fix 1. Modbus to MQTT function, Topic field setting is invalid. [2017-06-01] v1.0.0.9 New/Improved 1. Modify the driver and service function field names. 2. Modify the Dead Band definition of MQTT client from a percentage to a floating. 3. Added Client ID setting in MQTT client function. 4. Improve the byte timeout setting of Modbus driver. Bug fix 1. Screen error of MQTT Broker account and password field. 2. Loss setting data in MQTT JSON function. 3. OPC UA Node ID duplicate name. [2017-03-13] v1.0.0.7 New/Improved 1. Added DDNS client function. 2. Added User & Password settings in MQTT Broker. 3. Added JSON format in MQTT client. 4. Added TLS security settings in MQTT client. 5. Change OPC UA setting field. Bug fix 1. MQTT lastwill setting invalid. 2. Modbus settings are also removed when the project variables are cleared. Others 1. Changed Domain to a unique identifier to avoid duplicate UA-5231 domain names on the same network. 2. Added password verification when a user logs into the OS. [2016-07-20] v1.0.0.3 New/Improved 1. Added User & Password settings in MQTT Service function. 2. Added the function to update Middleware by using USB. 3. Added the function to restore factory settings. 4. Upgrade the library and broker version of MQTT. Bug fix 1. Modbus address setting error. 2. Loss some types of data when Modbus converts MQTT. [2016-01-25] v1.0.0.2 New/Improved 1. Support 512MB flash hardware version. [2015-08-20] v1.0.0.0 New/Improved 1. UA-5231 is launched.