Limit
- Last UpdatedMar 10, 2025
- 1 minute read
Contains one row for each monitored limit for a specified tag. A limit can be associated with one or more tags and/or contexts.
|
Column |
Data Type |
Description |
|---|---|---|
|
(PK) (FK) TagName |
TagNameType |
The unique name of the tag within the AVEVA Historian system. TagName is a foreign key from the AnalogTag table. |
|
(PK) (FK) ContextKey |
int NOT NULL |
The unique numerical identifier for the context. ContextKey is a foreign key from the Context table. |
|
(PK) LimitType |
tinyint NOT NULL |
The type of limit; that is, whether it is a rising (up) or falling (down) limit. 0 = Rising; 1 = Falling. |
|
(PK) ,Value |
float NOT NULL |
The value that is used as a specific limit for a tag. In theory, a tag can have an infinite number of limits defined. |
|
(PK) (FK) LimitNameKey |
int NOT NULL |
The unique numerical identifier associated with a limit name. LimitNameKey is a foreign key from the LimitName table. |
|
Priority |
int NOT NULL |
The priority for the limit. Priorities can range from 1 to over 2 billion, with 1 being the highest priority. |
|
Checked |
bit NOT NULL |
Used to specify whether a tag imported from InTouch is configured for automatic limit checking. Only checked limits are imported. 0 = Checking disabled; 1 = Checking enabled. |
|
Description |
nvarchar(50) NULL |
The description of the limit. |