Allen-Bradley Logix5000 Reference Manual page 63

Output Parameter Data Type
SeverityInv (Status.2) BOOL
AlarmLimitsInv (Status.3) BOOL
DeadbandInv (Status.4) BOOL
ROCPosLimitInv (Status.5) BOOL
ROCNegLimitInv (Status.6) BOOL
ROCPeriodInv (Status.7) BOOL
FactoryTalk Alarms and Events Logix-based Instructions (ALMD, ALMA)
Description
Alarm severity configuration is invalid.
If severity <1, the instruction uses Severity = 1.
If severity >1000, the instruction uses Severity = 1000.
Alarm Limit configuration is invalid (for example, LLimit < LLLimit). If invalid, the instruction clears all
level conditions active bits. Until the fault is cleared, no new level conditions can be detected.
Deadband configuration is invalid. If invalid, the instruction uses Deadband = 0.0.
Valid = 0 ≤ Deadband < Span from first enabled low alarm to the first enabled high alarm.
Positive rate-of-change limit invalid. If invalid, the instruction uses ROCPosLimit = 0.0, which disables
positive rate-of-change detection.
Negative rate-of-change limit invalid. If invalid, the instruction uses ROCNegLimit = 0.0, which
disables negative rate-of-change detection.
Rate-of-change period invalid. If invalid, the instruction uses ROCPeriod = 0.0, which disables rate-of-
change detection.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Chapter 1
63