AVEVA InTouch HMI supports several types of tags, which are used to represent process variables and provide access to real-time process data.
The following are some of the types of tags used in AVEVA InTouch:
- Analog tags: Analog tags represent continuous values, such as temperature, pressure, or flow. They can be used to display real-time process data or to provide control functions, such as setting process setpoints.
- Discrete tags: Discrete tags represent binary values, such as on/off, open/closed, or start/stop. They can be used to display real-time process data or to provide control functions, such as starting and stopping processes.
- String tags: String tags represent alphanumeric values, such as messages or process statuses. They can be used to display real-time process data or to provide control functions, such as entering process parameters.
- Array tags: Array tags represent arrays of values, such as lists of temperatures or pressure readings. They can be used to display real-time process data or to provide control functions, such as setting multiple process setpoints.
- Calculated tags: Calculated tags are used to perform mathematical operations on other tags. They can be used to perform calculations based on real-time process data, such as computing the average temperature or the total flow rate.
- Event tags: Event tags represent real-time events, such as process alarms or status changes. They can be used to trigger actions in the HMI, such as displaying a pop-up message or sending an email.
In summary, tags in AVEVA InTouch HMI are used to represent process variables and provide access to real-time process data. There are several types of tags available, including analog, discrete, string, array, calculated, and event tags, each with their own unique functions and capabilities.
