The directory where the Citect SCADA data files are located. The data files are the files that are generated at run time: trend files, disk PLC etc.

The backup directory that is used if a runtime database cannot be located (due to inoperative hardware or a file that has been moved, corrupted, or deleted).

The Page Name of the graphics page to display when Citect SCADA starts up.

The delay (in milliseconds) between updating a graphics page and starting the next communications cycle. The Page Scan Time sets the default for how often your graphics pages are updated. When a page is updated, relevant data (variable tags etc. represented on the graphics page) is scanned to determine if field conditions have changed. This setting is overridden by the Scan Time value specified in Page Properties (if applied).

A value of 250 (the default value) indicates that Citect SCADA will try to update the page every 250 ms. However, if Citect SCADA cannot read the entire data from the I/O Device within 250 ms, the page is processed at a slower rate. For example, if it takes 800 ms to read the data from the relevant I/O Device, Citect SCADA processes the page every 800 ms.

Under some conditions, you might want to slow the update of your pages to reduce the load on the I/O Servers. By reducing the page scan time, you allow more communication bandwidth to other Citect SCADA tasks or Clients. For example, you might want fast response on your main operator computers, while slowing the response time on manager computers. You can enter any value from 0 to 60000 (milliseconds).

Click the Register button to register alarm servers defined in a project to be accessed via a third party OPC client.

Note: This registration requires administrative privileges. If already logged on as an administrator you will be asked to allow the program to run with elevated privileges. Click OK to proceed. If logged on as a non-administrator, you will need to provide an admin password before being asked to allow program to run with elevated privileges.