Known Issues

Review these limitations before installing and using Web HMI.


Issue	Description
DE25299: Cannot install Web HMI on Windows 7 and Windows 2008 R2, generates message "Microsoft .NET Framework required for Web HMI setup."	Your system requires Microsoft .NET Framework 3.5.1 and Microsoft .NET Framework 4.5.2. For installation instructions, see the Microsoft documentation.
DE16140: Mimic Card bindings cannot load.	When a mimic is bound to any asset type with child or descendant properties of that same asset type, Web HMI cannot load the mimic card bindings. For example, if you assign an asset type called "Area" to a child property with the same asset type (such as a contained "Area" within an "Area"), or assign a child property of any asset type with a child of type "Area," a failure to load message appears. Do not bind any asset type to child or descent properties with that same asset type.
DE40294: Real-time data for hard-coded enterprise points does not display in Web HMI.	The CIMPLICITY OPC UA server does not support enterprise points. As a result, the data for an enterprise point does not appear in any Web HMI Runtime displays.
DE41516: Unusual behavior when using the zoom functionality on iPad and Android tablets.	On mobile devices, the pinch gesture does not work on Trend charts.
DE42170: iFIX unable to write data or acknowledge alarms due to non-default Tomcat port.	If using Web HMI with iFIX and Web HMI does not use the default Tomcat port (8443), such as when Historian 7.0 is installed before Web HMI. In this scenario, iFIX cannot connect to the Web HMI authentication service to validate the user credentials required for data writes and alarm acknowledgements, causing all writes and acknowledgements to fail. To resolve this, see iFIX Issues.
DE42474: When iFIX is installed after Web HMI (not recommended), you may receive this message "iFIX not running! OPC AE Server unable to start."	Start iFIX so the Alarm Gateway can connect to the OPC AE server.
DE43686: Real-time data type not plotting when range exceeds certain thresholds.	When the underlying CIMPLICITY point value exceeds certain thresholds, the Trend chart cannot plot the point. The valid range is approximately -2.064210e298 to 2.496796e306.
DE44401: Direct connect to an endpoint fails, receive Bad Security Checks Failed (cannot connect to server) error message.	When CIMPLICITY is configured to use a Global Discovery Server, you must register the Web HMI server to the same GDS.
DE45285: Upgrading to a different path fails.	To retain your model and configuration data, install Web HMI to the same location as the earlier version of Web HMI. If you installed Web HMI to a different location, do the following: Uninstall Web HMI. Install Web HMI to the same location as the earlier version. Verify that data is flowing in the model.
DE46040: Incorrect alarms appearing for HMI/SCADA server (CIMPLICITY or iFIX).	When you change the server name (Uniform Resource Name (URN)) in Administration > Set Up > Server, this change is not reflected in alarm views. In Runtime, you continue to see alarms from the previous server source.
DE47669: When importing a model containing a second CIMPLICITY namespace table, it overwrites the values in the first namespace table.	Combine the server and namespace information from the two namespace tables in to one namespace table, and then import the model again.
DE47858: Alarm Card shows partial connection () to an iFIX alarm source that is no longer installed on the Web HMI server.	An artifact left from the iFIX installation results in the Alarm Gateway trying to connect to the iFIX OPC A&E server to retrieve alarms, and fails because it is not on the system. To resolve this, see iFIX Issues.
DE61322: Boolean labels from CIMPLICITY are not reflected on Web HMI Mimic Cards.	Boolean labels, such as open and close, display as 0 and 1 on mimics. When updating these CIMPLICITY values on mimics, you must specify 0 or 1.
DE62478: When upgrading from Web HMI 2.0 with a defined Control Point (SetPoint), the Attribute column on the Control Card defaults to none. As a result, the Mimic Control View does not display any attributes at Runtime.	In the Administration environment, you must configure the setpoint attribute and any other required attributes on the Control Card. To do this, navigate to Visualizations > Designer , and then select the Control Card settings for the object type.
DE65198: When you hover over a CIMPLICITY value that you can update on a Mimic Card, only some of its characters are highlighted in blue. Web HMI does not highlight the characters on the opposite side of the value's justification.	Hover over the highlighted characters and type the new value.
DE71418: A user removed from a Web HMI Admin group in an Active Directory Domain remains a member in a Administrator group.	After the administrative privileges are revoked for a user in an Active Directory Web HMI Admin group, that user should automatically be removed from its mapped Web HMI Administrator group.
DE76871: During a Windows installation, the Windows Defender Firewall blocks the erl and epmd apps.	Select Allow access to provide access to these apps.
DE79766: Web HMI 2.1>2.2 SP2 upgrade may fail on some systems because the PostgreSQL service is unable to start.	The PostgreSQL service is not running but its processes are still executing. You must stop the main PostgreSQL service by following these steps: Read the number from the beginning of C:\Program Files\PostgreSQL\9.4\data\postmaster.pid, up to the file path, to determine the PID for the main PostgreSQL process. Execute pg_ctl kill INT <PID> in the command line, replacing the <PID> with the one found in step 1. Restart the PostgreSQL service.
DE80295: Reimporting a model fails on first attempt.	In some systems, this can happen. Import the model again.