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Issue What is the maximum number of TCP connections supported on an I/A Series R2 UNC running a Modbus TCP driver? Product Line TAC IA Series Environment I/A Series R2 UNC Cause The system needs to support multiple Modbus TCP devices or gateways simultaneously. Each device or gateway uses a separate processing thread, and the platform has a finite number of threads available. Resolution The recommended maximum number of Modbus TCP connections is 24 for JACE-4 (UNC-410) and JACE-5 (UNC-510/UNC-520). Default setting for maximumConnections is 1. If multiple Master TCP devices need simultaneous access to the station as a Modbus slave, increase maximumConnections accordingly. Important: Each Modbus TCP device or gateway shadowed in the station consumes a separate processing thread. Exceeding the recommended limit may impact performance.

Issue Users need to perform enthalpy calculations within an I/A Series R2 (Niagara) station and are unsure if a built-in object exists for this purpose. Product Line TAC IA Series Environment I/A Series R2 Cause Enthalpy calculations are not provided by default in standard Niagara R2 objects. Specialized program objects are required. Resolution Use one of the following program objects available in the Niagara library: Psychrometric Calculations Object Location: tridiumx/lib/programObjects/hvac/Psychrometric Calculations.sns Function: Calculates enthalpy, wet bulb, and dew point using inputs of dry bulb temperature and relative humidity. Requirement: lib.jar file must be present in the station. Outside Air Optimization Object Location: tridiumx/lib/energyManagement/OutsideAirOptimization.sns Function: Compares two sets of temperature and humidity inputs to determine the air supply with the least heat load. Supports temperature or enthalpy comparison. Includes free cooling logic and low-temperature protection.

Issue A station will not start in an I/A Series R2 (Niagara) UNC. The output window shows errors similar to: Invalid jar: /tffs/modules/coreRuntime-2.301.522.v2.jar WARNING: Module alm 2.301.522.v1 [...] Missing dependency: coreRuntime-2.301 WARNING: Module lonworks 2.301.522.v1 [...] Missing dependency: coreRuntime-2.301 FATAL: Could not load class "tridium.tools.StationMain". Product Line TAC IA Series Environment I/A Series R2 UNC Cause The station cannot start because required module dependencies (e.g., coreRuntime ) are missing or corrupted. This typically occurs after an incomplete upgrade or module mismatch. Resolution Perform a full install (upgrade) of the UNC, including: Upgrade the Operating System, NRE, and niagarad. On the Configure Modules screen: Check Upgrade/Add for all modules shown as installed.>p> This forces all modules to reload and resolve dependency issues. Restart the station and verify successful startup.

Issue The I/A Series R2 station output window continuously displays the following error: ERROR: run [DiscoverySender] - java.net.SocketException The station appears to be running, but the heartbeat LED remains solid. Product Line TAC IA Series Environment I/A Series R2 UNC Cause The error occurs because the Enable Announcement feature is not implemented in Niagara R2. When enabled, it triggers the DiscoverySender process, resulting in a socket exception. Resolution Open the station database in Workbench. Highlight the station name and go to the Config tab. Locate the property enableAnnouncement. Set enableAnnouncement = false. Save changes and restart the station (reboot the UNC).

Issue When adding more BACnet objects to a Niagara R2 UNC-520, users need a way to generate a report listing all BACnet object instance numbers currently in use. Product Line TAC IA Series Environment Niagara R2 all versions Cause Niagara R2 does not provide a built-in feature or report to list BACnet instance numbers assigned to objects in a UNC. Resolution The only available method is to manually search the station’s XML configuration file for the term instanceNumber . Steps: Locate the station XML file on the UNC. Open the file using a text editor. Search for the keyword: instanceNumber Review the results to identify all BACnet object instance numbers currently assigned. Best Practices for BACnet Instance Numbers Use Unique IDs Across the Network Ensure each BACnet object has a unique instance number to avoid conflicts during device discovery. Follow a Logical Numbering Scheme Assign ranges per device type or location (e.g., 1000–1999 for AHUs, 2000–2999 for VAVs). Document Assigned Ranges Maintain a central record of instance number ranges for all devices in the project. Avoid Overlapping Ranges When adding new devices, verify that the chosen range does not overlap with existing assignments. Plan for Future Expansion Reserve gaps in numbering for anticipated future devices or points.

Issue Microsmart Service in a Niagara R2 UNC exhibits slow or sluggish performance, impacting system responsiveness. Product Line TAC IA Series Environment Niagara R2 Microsmart Service Cause Polling configuration is not optimized, leading to poll overruns and inefficient data refresh intervals. Resolution Maintain Recommended Poll Always Count Set Poll Always count to 250 (recommended level). Adjust Cycle Time Check averageExecuteTime in Poll - Status tab. Increase cycleTime in Poll - Config tab to match averageExecuteTime + 1 second to prevent overruns. Optimize Minimum Poll Interval for Shadow Objects Review minimumPollInterval for each Microsmart point shadow object. Increase from default 1000 ms where possible. Example: For space temperature shadow objects, set between 30,000 ms to 60,000 ms. Recommended Settings Parameter Recommended Value Notes Poll Always Count 250 Prevents excessive polling load Cycle Time Avg Execute Time + 1 sec Adjust based on Poll - Status tab Minimum Poll Interval 30,000–60,000 ms (for temp) Increase from default 1,000 ms where possible

Issue In Niagara R2, UNC does not archive alarms or logs to the Enterprise Server. The Enterprise Server’s Standard Output Window displays the following error: ERROR: LogService.archive: java.lang.IllegalStateException: Database not connected! Additionally, the UNC Standard Output Window shows: tridium.datax.net.DxRemoteException: java.lang.IllegalStateException: Database not connected! Product Line TAC IA Series Environment R2 Enterprise Server (all versions) Cause The Enterprise Server’s Cloudscape database is corrupt, preventing successful archiving. Resolution Attempt to recover the Cloudscape database. If recovery fails, delete or rename the database folder to allow automatic recreation. Steps to Recover Database: Stop the Enterprise Server station. Open the Niagara console. At the prompt, type: dbadmin "station name" recover Restart the station and verify connectivity. If Recovery Fails: Stop the station. Locate the app folder under the station directory. Delete or rename the folder (e.g., add .old suffix). Restart the station. The Cloudscape database will be automatically re-created. Confirm the database status shows “is connected.”

Issue After successfully commissioning the MP-x SmartX controller, the device is online and functioning properly. However, it fails to reconnect after a warm restart. This issue is more frequently observed when the MP-x device is configured for DHCP, though it can also occur with a static IP address. (Please refer to the attached video that demonstrates the issue.) Product Line EcoStruxure Building Operation Environment Building Operation SmartX IP Multi-purpose Controller (MP-X) Building Operation SmartX IP Room Controller (RP-C) Building Operation SmartX Controller IP-IO Series Cause Communication settings are out of sync between the physical device and the configuration database. Resolution To synchronize the IP settings between the device and the configuration database, follow these instructions from the online help Discarding MP Series Controller IP Network Settings Changes

Issue Can I/A Series R2 WorkPlace Pro Alarm Console and G3 Alarm Portal operate simultaneously on the same computer? Product Line TAC IA Series Environment I/A Series R2 Alarm Console I/A Series G3 Alarm Portal Cause The computer should not be running a Niagara station for either R2 or G3. WorkPlace Pro and Workbench (acting as alarm console and alarm portal) do not require the Niagara service to function. Resolution Ensure the computer is not running a station for either R2 or G3. Stop all Niagara services (daemons) and prevent them from auto-starting on reboot. Verify that the following ports are available for the applications: Port 80 for R2 WorkPlace Pro Alarm Console Port 1911 for G3 Alarm Portal Confirm that these ports are open and not blocked by firewall or other services.

Issue In an I/A Series R2 (Niagara) UNC station, attempting to link to the output of a SIM block results in the error: java.lang.NullPointerException . Product Line TAC IA Series Environment I/A Series R2 UNC with the GCM driver Network 8000 SIM-CCN, containing SIM blocks with TYPE = 44 Cause SIM-CCN blocks with TYPE = 44 can be highly customized. Their inputs and outputs may use “data species” that the GCM driver in the UNC does not recognize. The GCM driver has not been tested with any SIM variants (SIM-CCN, SIM-MTECH, SIM-TRANE, SIM-YORK, LNC-100). Resolution Use appropriate Shadow Objects such as: GcmAvParam GcmDateParam GcmDvParam GcmEnumParam GcmIntParam GcmStringParam GcmTimeParam Add APT or DPT blocks to the SIM-CCN database to correctly interpret SIM block outputs for the GCM driver in the UNC.

Issue Need to change the value of the same property across multiple VAV controllers without manually editing each device individually. Product Line TAC IA Series Environment I/A series (Niagara) R2 Cause The site or database contains recurring controllers that require identical property changes. Performing these updates manually for each device is time-consuming and inefficient. Resolution Use the AdminTool servlet located in the Tridium core runtime JAR within the apps folder. This tool enables an online global search and replace of property values. Steps: Locate the AdminTool object in the Tridium core runtime JAR. Refer to the Niagara Standard Programming Reference (starting on page 6-18) for detailed instructions. Configure the search and replace parameters carefully (e.g., names, filters). Best Practice: Set up a test station and validate the search and replace statement before applying changes to the live station database.

Issue The I/A Series R2 Enterprise Server station fails to start and displays the error: fatal boot - file is used by another process station VM Product Line TAC IA Series Environment I/A Series R2 Enterprise Server Cause Multiple stations may be running on the server simultaneously (e.g., autostart enabled). The station may be open offline while attempting to start. Write protection settings on the PC prevent the Enterprise Server from creating or writing necessary files (e.g., config.db.lock , properties files). Resolution Verify Station Instances Ensure only one station is running on the server. Disable autostart for other stations if necessary. Close Offline Station Confirm the station is not open offline when attempting to start. Check File Permissions Navigate to the Niagara directory and verify that all files and subdirectories are not set to read-only or blocked for writing. Remove write protection and ensure the Enterprise Server software has full access.

Issue The Mail Service in a Niagara R2 UNC station is configured correctly, but MailRecipients do not receive emails. The following error appears in the Standard Output Window: javax.mail.SendFailedException: Sending failed; nested exception is: javax.mail.SendFailedException: Invalid Addresses; nested exception is: javax.mail.SendFailedException: 550 5.7.1 Unable to relay Debug logs show: DEBUG SMTP RCVD: 550 5.7.1 Unable to relay DEBUG SMTPTransport: Sending failed because of invalid destination addresses Product Line TAC IA Series Environment Niagara R2 Cause The SMTP server is not configured to relay emails to external addresses. If the recipient email account does not exist on the SMTP server, the message cannot be forwarded. Additionally, if multiple addresses are configured and any one address fails, none of the emails will be sent. Resolution Verify the SMTP server settings: Ensure it is configured to relay emails outside its own domain. Contact the site’s IT department to enable SMTP relay for external addresses. Validate recipient addresses: Remove invalid or non-relayable addresses from the MailRecipient configuration. Test sending an email to a valid account on the SMTP server to confirm connectivity.

Issue When attempting to back up an I/A Series R2 UNC (Niagara) station, the process fails and displays the following error: *** BACKING UP: Station Name [192.168.x.x] *** FAILED: Station Name [192.168.x.x]: java.lang.NullPointerException Product Line TAC IA Series Environment I/A Series R2 UNC (Niagara) station Cause The error occurs because all available system threads are in use, preventing the backup operation from completing successfully. Resolution To resolve the issue: Increase Thread Count Open Admin Tool → Host → Edit File → System Properties. Increase the thread count from 15 to 30. Reboot the UNC After updating the thread count, restart the UNC to apply changes.

Issue When running the I/A Series R2 Niagara App Tunneling control panel applet on a Windows 7 computer, all display fields on the LON or Serial tunnel screen appear blank. If data is entered and the form is redisplayed, it comes up blank. Product Line TAC IA Series Environment Microsoft Windows 7 Professional operating system. I/A Series R2 Niagara Application Tunneling (serial and/or LON) Cause Insufficient Windows permissions prevent the tunneling configuration from being displayed or saved. Resolution There is no direct fix in the current version of the Niagara Application Tunneling client, but the following workaround resolves the issue: Open Windows Explorer and locate the file: C:\Windows\System32\natconfig.cpl Right-click the file and select Copy. Right-click on the desktop and select Paste Shortcut. Rename the shortcut to Niagara R2 Tunneling. Open Control Panel: If set to View by Category, change to Large Icons. Navigate to User Accounts → Change User Account Control settings. If the slider is at Always Notify or Default (second position), move it to the third position. Click OK to save. (Optional) Restore Control Panel view to Category. To run the applet: Right-click the shortcut and select Run as Administrator. The tunneling settings will now display correctly, and changes will be saved.

Issue In Niagara R2, IP communication to the UNC intermittently drops out without showing errors in the standard output window. Product Line TAC IA Series Environment Niagara R2 (all versions) UNC models: UNC-410, UNC-510, UNC-520 Cause Two or more UNC controllers are configured with the same IP address, creating a duplicate IP address conflict on the network. Resolution Verify the IP address configuration of all UNCs on the network. Assign a unique IP address to each UNC to eliminate duplication. Ensure no other devices on the network share the same IP address. After correcting the IP conflict, confirm stable communication with the UNC.

Issue When using BACnet Change of Value (COV) notifications in I/A Series R2, device objects learned as lite objects do not allow viewing or modifying the covIncrement property at the UNC. Product Line TAC IA Series Environment I/A Series R2 (Niagara) Cause BACnet lite objects are designed without the covIncrement property. If COV notifications are configured and adjustments to covIncrement are needed, changes must be made directly in the controller using WorkPlace Tech, followed by recompiling and downloading the application. Resolution To ensure the covIncrement property is accessible and editable from the UNC: In BACnet Service → BACnet Utilities, open the LearnDevice window. Uncheck the option Use lite objects before learning the device. This will create full BACnet objects, allowing the covIncrement property to be viewed and modified directly from the UNC.

Issue When attempting to open I/A Series R2 Workplace Pro or the Admin Tool, the program briefly displays its splash screen and then closes without any error message. Product Line TAC IA Series Environment I/A Series R2 WorkPlace Pro I/A Series R2 Admin tool Cause Insufficient computer memory prevents the standard 1024 MB Java heap from being reserved. Resolution Adjust the Java heap settings in the nre.properties file: Backup the file before making changes. Navigate to: \niagara\nre\lib Open nre.properties using a text editor (e.g., Notepad). Modify the line: java.options=-Xmx1024MB to: java.options=-Xmx768MB Leave all other parameters unchanged. Save the file and restart the software.

Issue Need to import data from a facility management system’s SQL database into an I/A Series R2 station. Product Line TAC IA Series Environment I/A Series R2 system External SQL database Cause The system requires integration of external SQL data for reporting or operational purposes. Resolution Use the sqlUtility module, which includes an object called SqlData to perform SQL queries on any SQL database. Important: The sqlUtility can only be used in an Enterprise Server, not in a UNC. Steps: Create a SQL query that returns a single column from the target data table. Example query: SELECT EnergyIntensity FROM EnergyTable ORDER BY O_Id DESC This query retrieves the EnergyIntensity column from the EnergyTable, sorted by record number (O_Id) in descending order. The returned value will be the first element in the first column of the query results, ensuring the newest value is obtained.

Issue Various errors appear in the Standard Output Window when attempting to edit a UNC station database using WorkPlace Pro (WPP). Errors include missing modules and out-of-date modules. Product Line TAC IA Series Environment I/A Series R2 WPP and UNC. Cause The engineer’s WPP installation does not match the UNC station configuration. Some modules in WPP are missing or at different revision levels. The NiagaraD service version on the engineer’s computer does not match the version installed on the UNC. Resolution Verify that all modules used in the UNC are present and match the versions in the nre\modules folder of the WPP system. Ensure the NiagaraD service running on the computer matches the software version installed on the UNC. If discrepancies exist, update WPP and modules to align with the UNC station configuration.

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