Core Driver

Help Contents

Introduction

The Core Driver provides these types of tags:

Display Page Tags

Display Page Tags define the content of pages displayed to an operator. These tags are supported:

IconTag TypeVersionDescription
Graphic Icon Graphic Page Tag 3.0 A preconfigured graphic page stored in a tag.
Text File Icon Text File Tag 3.13 A preconfigured plain text file.
Trend Icon Trend Tag 2.6 A preconfigured trend showing one or more tag values historically.

Internal Data Point Tags

Internal Data Point Tags store data points internally in the Fernhill SCADA Server. These Internal Data Point Tags are supported:

IconTag TypeVersionDescription
Analog Data Point Tag Internal Analog Data Point Tag 1.0 Stores an analog value not derived from any data source.
Digital Data Point Tag Internal Digital Data Point Tag 1.0 Stores a digital value not derived from any data source.
String Data Point Tag Internal String Data Point Tag 1.2 Stores a variable length character string not derived from any data source.
Word Data Point Tag Internal Word Data Point Tag 1.2 Stores a 16-bit integer value not derived from any data source.
Double Word Data Point Tag Internal Double Word Data Point Tag 1.3 Stores a 32-bit integer value not derived from any data source.

I/O Data Point Tags

I/O Data Point Tags map data points to external data sources. These I/O Data Point Tags are supported:

IconTag TypeVersionDescription
Analog Data Point Tag I/O Analog Data Point Tag 3.12 Maps an Analog Data Point Tag to an external data source.
Digital Data Point Tag I/O Digital Data Point Tag 3.12 Maps a Digital Data Point Tag to an external data source.
String Data Point Tag I/O String Data Point Tag 3.12 Maps a String Data Point Tag to an external data source.
Word Data Point Tag I/O Word Data Point Tag 3.12 Maps a Word Data Point Tag to an external data source.
Double Word Data Point Tag I/O Double Word Data Point Tag 3.12 Maps a Double Word Data Point Tag to an external data source.

Calculated Data Point Tags

Calculated Data Point Tags use a calculation to define the value of a tag. These Calculated Data Point Tags are supported:

IconTag TypeVersionDescription
Analog Data Point Tag Calculated Analog Data Point Tag 1.0 Updates an analog value from the result of a calculation.
Digital Data Point Tag Calculated Digital Data Point Tag 1.0 Updates a digital value from the result of a calculation.
String Data Point Tag Calculated String Data Point Tag 1.2 Updates a string value from the result of a calculation.
Word Data Point Tag Calculated Word Data Point Tag 1.2 Updates a 16-bit unsigned integer value from the result of a calculation.
Double Word Data Point Tag Calculated Double Word Data Point Tag 1.3 Updates a 32-bit unsigned integer value from the result of a calculation.

Alarm Tags

Alarm Tags raise alarms if the associated data tag meets certain conditions. These alarm tags are supported:

IconTag TypeVersionDescription
Digital Alarm Digital Alarm Tag 1.5 Raises an alarm if a tag is a specified value.
Analog Alarm Analog Level Alarm Tag 1.5 Raises an alarm if a tag value is outside of a specified range.

Program Tags

Program Tags store IEC 61131-3 Scripts. These program tags are supported:

IconTag TypeVersionDescription
Program Tag Program Tag 2.0 Runs an program script.
Program Library Tag Program Library Tag 2.0 A library of shared functions and function blocks.

Organization Tags

Organization Tags are used to organize the structure of the tag database. These organization tags are supported:

Icon Tag Type Version Description
Folder Icon Folder Tag 1.0 A folder for other tags and folders.
Database Root Icon Database Root Tag 1.0 The root tag of the tag database.
Database Table Icon Database Table Tag 3.35 An application specific database table.

Further Information

Fernhill SCADA Drivers

For information about other drivers available in Fernhill SCADA.

Glossary

For the meaning of terms used in Fernhill SCADA.