Stations and Capabilities
The Desigo CC software has a client-server architecture, in which a server component handles all interactions with the field networks and devices installed on the site, while the clients provide the user-facing application that operators interact with.
The computers running the various components of the Desigo CC software are referred to as stations.
In Installation, see also System Components.
Station Types
Station Types | Description | Notes |
---|---|---|
Server (required) | The computer that runs the server component of Desigo CC. It hosts all the data of the installation (the project databases) and connects to the field networks and subsystems of the building-control site. Also referred to as the Main Server. |
|
Client (optional) | An additional, separate computer on which the Desigo CC client application is installed. Also referred to as an installed client. |
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FEP (optional) | Front-end processor. An additional, separate computer that is used for load-balancing the network-based processing for a system. |
|
Web Server (optional) | A separate computer hosting an IIS web server component, which enables the functioning of Windows app clients. |
|
Windows App Client | A computer used to access Desigo CC as a light application, downloaded and installed on-demand directly from the Internet Explorer browser. Once installed, it looks like the standard Desigo CC client software, but allows access to local resources only. Each time the user launches the Windows app client, a search for system updates is performed. If a new version is available, the user can choose to update it or continue to use the previous version. |
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Flex Client | A computer or mobile device is used to access the Desigo CC Flex Client, which can be a browser-based web app or a desktop app. It allows access to local resources only. |
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Capabilities of Different Station Types
| Desigo CC | |||
---|---|---|---|---|
| Server | Installed Client / FEP | Windows App Client | Flex Client |
Complete access to Desigo CC resources | Yes | No | No | No |
Import/export/upgrade of libraries (including object models and import rules) | Yes | No | No | No |
Text localization import/export | Yes | No | No | No |
Closed mode | Yes | Yes | No | Yes (desktop app only) |
Request/transfer of fire panel ownership | Yes | Yes | No | Yes (identified client only) |
Auto logoff due to user inactivity | Yes | Yes | No | Yes |
Multiple monitor support | Yes | Yes | Yes | Yes (desktop app only) |
Operator switchover | Yes | Yes | Yes | Yes |
Auto logon of default user | Yes | Yes | Yes | Yes (identified client only) |
Disconnection Issues in Distributed Systems
In a distributed environment, when a system connects to the others its node is automatically created in System Browser at the following path: Project > Management System > Servers.
Every system will monitor its connection status with the others and in case a system temporarily disconnects, an event is generated to inform the operator about the connection failure. When the connection is re-established, the relevant event is automatically cleared.
If a system is permanently disconnected from the others, you must manually delete the corresponding node in System Browser under Project > Management System > Servers.
Windows App Client Application Cache Issue
In installations with a high number of extension modules, especially if multi-language, Desigo CC Windows App clients might have an insufficient web application storage and fail to start (an Unknown Error
displays when starting the web application).
Chromium web browser dll constrains the amount of space available for the installation of extension modules on a Desigo CC Windows App client.
Consequently, the Windows App client application cache is reduced if on the same Desigo CC Windows App client the Chromium web browser is enabled for the online help and many extension modules are installed.
To solve this issue a system administrator must enlarge the cache storage quota on the specific client computer by changing a specific registry key.
For more details, see https://msdn.microsoft.com/en-us/library/267k390a.aspx.