Alarms view parameters
The
Alarms
view include these parameters:Parameter | Description |
|---|---|
Disable All Alarms | Prevents the module from generating any of the four process alarms (Low Low, Low,
High, and High High) or the Rate Alarm and does not allow access to any of the
alarm configuration properties.
IMPORTANT:
To use alarms, set the
Chxx.AlarmDisable configuration tag to 1. Also, make sure that the
Chxx.yyAlarmEn output tag for the same channel is set to 1.
|
Latch Process Alarms | Instructs the module to latch any of the four process alarms (Low Low, Low, High,
and High High) once the alarm has been triggered, even if the condition causing
the alarm to occur disappears. |
High High Limit | Sets the trigger point in Engineering Units. HHAlarm tag is set to 1 when the
input signal moves above this limit. |
High Limit | Sets the trigger point in Engineering Units. HAlarm tag is set to 1 when the
input signal moves above this limit. |
Low Limit | Sets the trigger point in Engineering Units. LAlarm tag is set to 1 when the
input signal moves below this limit. |
Low Low Limit | Sets the trigger point in Engineering Units. LLAlarm tag is set to 1 when the
input signal moves below this limit. |
Deadband | Allows the process alarm status bits to remain set, even if the alarm condition
disappears, as long as the channel data remains within plus or minus the deadband
value of the process alarm. This Deadband value is entered in engineering
units. |
Enable Rate Alarm Latching | Latches the Rate Alarm so that it does not clear until explicitly unlatched. |
Rate Alarm Limit | Sets the trigger point in Engineering Units per second. RateAlarm tag is set to 1
when the rate of change between input samples on this channel exceeds this
limit. |
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