DDE scanners read and write to data on DDE servers. You need to map the data on each DDE server to suitable DDE points within the ClearSCADA database, to enable ClearSCADA to handle the data in a similar way to other point data on the system (for instance, in order to monitor state changes, raise alarms, or execute controls).
The DDE driver can support any of the point types that are listed below. You need to configure those point types that present the DDE node data in a suitable format within the ClearSCADA database.
Where a point type is specific to the DDE Driver, a short description is given below. For descriptions of other point types, see the ClearSCADA Guide to Core Point Configuration.
For information on creating a point and displaying a Point Form, see Configuring a Point in the ClearSCADA Guide to Core Point Configuration.
For information on configuring fields on the DDE tab, see Configure Common Properties on the DDE Tab. For analog points, also see Configuring Analog Points.
For information on configuring fields on the <Point Type> tab, see the references below:
- Analog Point—see Defining Analog Point Details in the ClearSCADA Guide to Core Point Configuration.
- Digital Point—see Defining Digital Point Details in the ClearSCADA Guide to Core Point Configuration.
- String Point—a point for which the source is a text string, rather than a numeric value (see Configuring String Points).
- Time Point—a point for which the source is a time value (see Configuring Time Points).
For fields on other tabs, see Tabs on Point Forms in the ClearSCADA Guide to Simple Drivers.