Access the VAM from a Thin Client

For those running VTScada as a Windows® Service, it is possible to access the VTScada Application Manager (VAM) using either the VTScada Internet Client (VIC) or the VTScada Anywhere Client. Only one client at a time may access the VAM, or other script applications on that VAM, using this method. The mobile client cannot be used for this purpose.

To access applications from a Thin Client (including script applications) each must be secured and you must be able to sign in to an account that holds the Thin Client Access privilege.

Features are limited according to the type of thin client in use:

  • Mobile client: No access to the VAM
  • VTScada Anywhere client: Access the VAM as an application, but no ability to use Find Existing, Get from ChangeSet or Clone from ChangeSet.
  • VTScada Internet Client: Access the VAM as an application, but no ability to use Find Existing.

Prerequisites:

  1. You are running VTScada as a Windows service.
    This is mandatory. The following steps assume that you have already installed VTScada as a service and are switching to desktop mode temporarily. The required command line switches are documented in Service Command Line Reference
  2. Configure a VTScada Thin Client Server.

Steps:

  1. Stop VTScada as a service on the server.
    vts.exe /s=stop ... where VTS.exe is located in the folder C:\Program Files\Trihedral\VTScada\VTScada_YourVersionNumber
  2. Start VTScada as a desktop application on the server (vts.exe)
  3. Add the Application Manager script application to the VAM as an existing application.
    (Find Existing ) By definition, it will already be running.
  4. Open the Application Properties dialog for that script application.
  5. Select the Edit Security page.
  6. Enable security.
  7. Create a user account and grant it the VTScada Thin Client privilege.
  8. Create a new realm that includes this application.
    DO NOT add this application to an existing realm.
    DO NOT add other applications to this realm. (Configure a Realm)
  9. Stop VTScada as a desktop application on the server.
  10. Restart VTScada as a service. (vts.exe /s=start)
  11. Connect to the realm you created, using either the VTScada Internet Client (VIC) or the VTScada Anywhere Client.

As with any script application, to which you plan to make an Internet connection, do not configure the application to start automatically. Doing so is both unnecessary and undesirable.