A tag component is a building block used by other tags. A tag component provides common features, for example:
These tag components are supported:
Tag Component | Description |
---|---|
Core Tag | Provides common features in all tags. |
Alarm Tag | Used by all tags that raise alarms. |
Channel Tag | Provides a communication channel to a device. |
Active Channel Tag | An active communication channel that connects to, or sends requests to, a device. |
Passive Channel Tag | A passive communication channel that receives commands from an external driver. |
PLC Device Tag | Represents a logical connection to a PLC, or Outstation, or Data Source |
PLC Scanned Device Tag | Represents a logical connection to a PLC or Device that is scanned at a regular interval. |
PLC Device Tag with RTC | Represents a logical connection to a PLC or Device with a real time clock. Fernhill SCADA can synchronize the real time clock of the PLC or device. |
Byte Register Block Tag | Represents an array of Bytes in an external PLC Device. |
Word Register Block Tag | Represents an array of Words in an external PLC Device. |
Data Point Tag | Represents a single data point. |
Analog Data Point Tag | Represents a continuously variable data point. |
Scaled Analog Data Point Tag | Represents a continuously variable data point (with additional scaling options). |
Digital Data Point Tag | Represents a single bit data point. |
Word Data Point Tag | Represents an unsigned 16-bit integer data point. |
Double Word Data Point Tag | Represents an unsigned 32-bit integer data point. |
Long Word Data Point Tag | Represents an unsigned 64-bit integer data point. |
String Data Point Tag | Represents a variable length string data point. |
GUI Plot Tag | Represents a common reference for all plot types. |