Alarm State Triggers
These are the types of triggers available for analog and digital tags:
| Type | Triggers on: | Analog/Digital | Explanation |
|---|---|---|---|
|
SET |
Any alarm limit |
Both |
Any alarm state is set |
|
HH |
High-high alarm limit |
Analogue only |
Tag value is greater than the HH alarm limit |
|
H |
High alarm limit |
Analogue only |
Tag value is greater than the H alarm limit |
|
L |
Low alarm limit |
Analogue only |
Tag value is less than the L alarm limit |
|
LL |
Low-low alarm limit |
Analogue only |
Tag is less than the LL alarm limit |
|
ROR |
Rate of rise |
Analogue only |
ROC Rise/ROC Time reaches or exceeds the value set for the tag. |
|
ROF |
Rate of fall |
Analogue only |
ROC Fall/ROC Time reaches or exceeds the value set for the tag. |
|
N |
Alarm cleared and in a normal state |
Both |
A previous alarm state has been cleared |
|
ACK |
Alarm acknowledged |
Both |
An alarm has been acknowledged |
|
NULL |
Any of the above |
Both |
Any of the above |