Five basic tasks in SCADA system

• Input/output task

This program is the interface between the control and monitoring system and the plant floor.

• Alarm task

This manages all alarms by detecting digital alarm points and comparing the values of analog alarm points to alarm thresholds.

• Trends task

The trends task collects data to be monitored over time.

• Reports task

Reports are produced from plant data. These reports can be periodic, event triggered or activated by the operator.

• Display task

This manages all data to be monitored by the operator and all control actions requested by the operator.