The Alarm Detection function block provides the ability to easily specify alarms on parameters that are obtained from I/O or from the results of other function block calculations. This function block takes user specified input and does high, low and deviation alarm detection. The parameters generated by the Alarm Detection function block can then be used to generate an alarm in the operator environment.
Modes are not supported in the Alarm Detection function block.
The IN is a floating point value and status.
This block supports conditional alarming. Enabling conditional alarming makes additional parameters available for this block.
The following diagram shows the internal components of the Alarm Detection function block:
