Copyright: Created with EasyHelp (Tel: 0973 209667)


Alarms/Alarm Handler - RG354026

Description

This block implements an alarm-handling system, associating function blocks with virtual alarm channels.

The alarm output is true whenever an alarm condition exits; it is typically used to activate an alarm indicator lamp.

The unacknowledged alarm output is true whenever an unacknowledged alarm exists; it is typically used to sound a horn.

The display output may be used to provide annunciation of the alarm on L5101/L5102 Operator Stations.  For purposes of display, alarms are handled in FIFO (first in, first out) order with unacknowledged alarms having priority over acknowledged alarms.

Virtual channels are created as needed and associated with alarm channel function blocks.  Note that there must be a unique function block associated with each channel (e.g. of type Alarms/Alarm Channel, etc.).

Parameters

Acknowledge	Acknowledges the oldest unacknowledged alarm (if any).  Expects true or false.

Get State	Returns the current state of the alarms handler:  No alarms (0), Actd alarms (1), or Unackd alarms (2).


Description

This block implements an alarm-handling system, associating function blocks with virtual alarm channels.

The alarm output is true whenever an alarm condition exits; it is typically used to activate an alarm indicator lamp.

The unacknowledged alarm output is true whenever an unacknowledged alarm exists; it is typically used to sound a horn.

The display output may be used to provide annunciation of the alarm on L5101/L5102 Operator Stations.  For purposes of display, alarms are handled in FIFO (first in, first out) order with unacknowledged alarms having priority over acknowledged alarms.

Virtual channels are created as needed and associated with alarm channel function blocks.  Note that there must be a unique function block associated with each channel (e.g. of type Alarms/Alarm Channel, etc.).


Parameters

Acknowledge	Acknowledges the oldest unacknowledged alarm (if any).  Expects true or false.

Get State	Returns the current state of the alarms handler:  No alarms (0), Actd alarms (1), or Unackd alarms (2).