Configure project settings for Web Thin Client

Select the Web tab on the Project Settings dialog:

Note: If you change any of these settings, then you should verify your project before resending it to the target device.

Configure the parameters on this tab as follows:

• Data Server IP Address field: Type the IP address (or host name) of the computer or device that will host the data server (also known as the project runtime server). If this field is left blank, the Thin Client will assume that the Web server (that is, the address entered into the browser) is also the data server.

  Tip: You can use the IP address 127.0.0.1 (localhost) to access the TCP/IP server on the local computer, regardless of its actual address on the network. This option is useful for local tests; however, you are not able to access the data server from remote computers using this configuration.

• Encrypted Channel checkbox: This option is selected by default. It instructs Web Thin Clients to connect to the data server via encrypted communication. You can clear this option in order to have Web Thin Clients connect to the data server via standard, unencrypted communication, if the design of your project or network does not allow for encrypted communication. For more information, see Communication tab.

• Send Period field: Type a value to specify the send period (in milliseconds) used to exchange data between the server and the Thin Client stations. It means that the Thin Client will send a package with the new tag values to the server every n millisecond(s).

  The Send Period of the server is configured in the project settings (Communication on the Project tab of the ribbon). The default value is 1000 (milliseconds). You can set a lower value in this field to increase the update rate between the server and the Thin Clients. Doing so may result in higher traffic in the network (the network will be accessed more frequently) if the tags are changing continuously (faster than 1 second).

• Disable Remote Client Commands checkbox: Click to enable this box, to prevent a remote client from issuing commands from your Thin Client to your server. When this option is enabled, the Thin Client can read data from the server, but cannot send data (tag values, set-points) to the data server. In this case, the Thin Client station becomes a Read Only station.

• Enable ToolTips checkbox: Click to enable this box, to display the ToolTips configured on the objects of the screens when viewing them on the Thin Client (web browser).

• Auto Screen Scaling checkbox: Click to enable this box, to automatically scale screens displayed in a web browser window. Using this option, the screen fits to the size of the web browser window, regardless of its resolution.

• Enable File Compression checkbox: Click to enable this box to compress the files stored on the Web sub-folder of your project folder. This option is useful for reducing download time, particularly if you have a slow connection between your server and the Thin Client.

• Log (Enable checkbox and FileName text field): Click to enable the checkbox, and type a file name into the text field to generate a log file on the Thin Client station. You can use this log file for debugging purposes.

• Virtual Keyboard: When this option is checked, the Virtual Keyboard (VK) is enabled for your project. The Virtual Keyboard allows the user to enter data (text or numeric values) during run time using the client station's touchscreen instead of a physical keyboard or keypad. For example, a Text object with the Text Data Link animation applied and the Input Enabled option selected.

  You can establish a default configuration for the Virtual Keyboard:

IP Security Settings

IP Security button: Click this button to open the IP Security dialog.

Use the parameters on this dialog to specify the range of IP addresses for the computers that are allowed to access your project as Thin Clients. This option is useful when you can control the IP Address of the Thin Client computers allowed to connect to the Web server.

Click the Enable checkbox, and when the Edit pane parameters become active, type IP addresses in the From and To fields to specify the IP address range. Use the Add and Remove buttons to move the IP addresses into the IP Address Range list. When a Thin Client attempts to connect to the server, it checks for an IP address for the Thin Client station that is within any range configured in the IP Security dialog. If one is not found, the server refuses the connection request from the Thin Client station.

Advanced Settings

Advanced button: Click this button to open a dialog where you can edit the Advanced Web settings. For most cases, these settings do not need to be modified. However, depending on the architecture used in your project, you have the flexibility to configure advanced settings.

• Secondary Data Server IP Address field: Type the IP address (or host name) of the secondary data server station. The data server station is the computer or device where the TCP/IP server module of AVEVA Edge is running. This field must be filled when you are using redundant data servers from the Thin Clients. If the primary data server fails, the Thin Client will attempt to connect to the secondary data server automatically.

• BackUp URL field: Type the URL where the Web files are stored (files from the Web sub-folder of your project folder). This URL is used to download the files from the secondary Web server when the primary Web server is not available.

• ISSymbol URL field: When the Thin Client connects to the server, it attempts to load the ISSymbol control. If ISSymbol is not registered in the local computer (Thin Client), the browser will attempt to download it from the URL specified in this field. The default URL is a web site where AVEVA keeps the most updated version of ISSymbol available for download. You may need to configure a different location, especially when the Thin Client computer is not connected to the internet. The ISSymbolVM.cab (stored in the \BIN sub-folder of AVEVA Edge) must be available in the URL configured in this field.

  Tip: When the Thin Client stations do not have access to the internet, it is recommended that the ISSymbolVM.cab file be made available at the Web server station, and that the URL be configured for it in this field.

• Web Tunneling Gateway

  • Enabled checkbox: Check this option to enable the Web Tunneling Gateway. Depending on the architecture of your project, you may need to use the Web Tunneling Gateway to route the Thin Client computers to the data server.

  • TCP Port: Select this option when using HTTP with the Web server of Microsoft IIS. You can specify the TCP port used by your HTTP Web server ( 80 is the default TCP port for HTTP protocol).

  • SSL Port: Select this option when using SSL (Secure Socket Layer) with the Microsoft IIS Web server. You can specify the TCP port used by your HTTPS Web server ( 443 is the default TCP port for HTTPS protocol).

  • IP Address: IP address of the Web server computer where the Web Tunneling Gateway is running. This must be the IP address of the Web server accessible from the Thin Client station(s).

  • Secondary IP Address: IP address of the Web server computer where the secondary Web Tunneling Gateway is running. This must be the IP address of the secondary Web server accessible from the Thin Client station(s). This field must be configured when you are using redundant Web servers.

    Tip: Most of the Web settings can be modified dynamically by the SetWebConfig function. It is especially useful when you want to create a project just once, and make sure that the Web settings are automatically configured when you run your project on different stations with different IP addresses.