The following table describes the alarm information shown by the System Alarm Management application.
|
Item |
Description |
|---|---|
|
Alarm name |
The name of the alarm as it appears on operator displays that reference it. For example, HI_HI_ALM. |
|
Type |
A set of characteristics that determine how the alarm appears in operator displays and in the Event Chronicle. |
|
Parameter |
The name of the module that contains the alarm and the parameter value that triggers the alarm. |
|
Limit value |
The value at which the alarm condition is true. |
|
Enable |
True - the alarm is eligible to become active. False - the alarm is ineligible to become active. |
|
Inverted |
True - the alarm characteristics are inverted. False - the alarm characteristics are not inverted. |
|
Priority |
A word such as critical, warning, or advisory, or any user-defined priority that indicates the importance of the event to the operator and the priority of the alarm at the workstation. |
|
%P1 Parameter |
Represents the first parameter value that appears in the alarm message. (This parameter is optional.) |
|
% P2 Parameter |
Represents the second parameter value that appears in the alarm message. (This parameter is optional.) |
|
Enable Delay |
Shows the time (in seconds) that is delayed before alarm processing begins. Processing begins immediately after the alarm is enabled (alarm_ENAB becomes true). The alarm_ACT parameter is forced to 0 for the time specified (in seconds). The timer resets whenever alarm_ENAB goes from zero to 1. |
|
On Delay |
The time (in seconds) that is delayed before alarm_ACT is set to true (1) after the alarm condition is detected. If the alarm condition clears before the delay time is reached, the alarm_ACT parameter remains false (0) and the timer is reset. Every time the alarm condition clears, the timer resets. |
|
Off Delay |
The time (in seconds) that is delayed before alarm_ACT is set to 0 (false) after the alarm condition clears. If the alarm condition reoccurs before the delay time is reached, the alarm_ACT parameter remains true (1) and the timer is reset. Every time the alarm condition is detected, the timer resets. |
|
Hysteresis |
Used as a deadband when resetting base alarm conditions for analog values. The block uses the value of alarm_HYS instead of the standard ALARM_HYS. When conditional alarm detection is enabled, the block uses ALARM_HYS as the deadband for deviation alarm conditions only. |
|
Days Timeout |
The days component of the alarm shelving timeout. The days, hours and minutes values are combined. Alarm shelving timeout resets this alarm to unshelved if it has been shelved for the specified timeout period. The days, hours and minutes values are totaled. |
|
Hours Timeout |
The hours component of the alarm shelving timeout. The days, hours and minutes values are combined. Alarm shelving timeout resets this alarm to shelved if it has been shelved for the specified timeout period. The days, hours and minutes values are totaled. |
|
Minutes Timeout |
The minutes component of the alarm shelving timeout. The days, hours and minutes values are combined. Alarm shelving timeout resets this alarm to unshelved if it has been shelved for the specified timeout period. The days, hours and minutes values are totaled. |
|
Functional Classification |
The functional classification assigned to this alarm. |
|
Alarm Help |
Whether or not help has been configured for this alarm. |