SetLineCompression Method
SetLineCompression is a method for a Trend Invoke method action.
- Purpose: SetLineCompression
- Advanced Configuration: SetLineCompression
- Historian compression line additional values.
Purpose: SetLineCompression
To set the compression specifications for a particular Line ID.
Advanced Configuration: SetLineCompression
Click Advanced on the Action tab of the Procedure Information dialog box.
The Edit Method dialog box opens for the SetLineCompression method
Configuration is as follows.
Field | Description | ||||
---|---|---|---|---|---|
Method name | Name of the selected method. Note: Another method can be selected from the drop-down list. | ||||
Method result | (Optional) Setpoint that contains the status value. | ||||
Boolean | Boolean | ||||
Structure Type | BOOL | ||||
Allowed | Device or global Point ID. | ||||
Parameters | LineID | String that identifies the line ID whose display parameters you want to change. | |||
Type | Expression or point ID that evaluates to one of the following numeric values: | ||||
Value | Trending will plot the: | ||||
0 | Not do any compression. | ||||
1 | Average of the values in the group. | ||||
2 | First data point in the group. | ||||
3 | Last data point in the group. | ||||
4 | Data point from the group with the minimum value. | ||||
5 | Plot the data point from the group with the maximum value. If you are using compression, Trending automatically determines the group size. | ||||
6 | Average of the values in the group, using server side compression. | ||||
7 | First data point in the group, using server side compression. | ||||
8 | Last data point in the group, using server side compression. | ||||
9 | Data point from the group with the minimum value, using server side compression. | ||||
10 | Data point from the group with the maximum value, using server side compression. | ||||
The following values are available only for Historian lines. | |||||
11 | Lab value | ||||
12 | Average value | ||||
13 | Trend | ||||
14 | Interpolated | ||||
15 | Raw standard deviation | ||||
16 | Standard deviation | ||||
17 | Count | ||||
18 | Total | ||||
19 | Raw total value | ||||
Resolution | Number of time units that should be used for each group of data. (For Historian lines only) the Resolution value does the following. | ||||
????0 | The Default Sampling Interval will be enabled for that line. | ||||
>0 |
(Greater than 0) Trending checks to see if the Default SampleInterval is enabled for the line; if the Default Sample Interval is enabled, Trending:
|
||||
Units | Unit of time to be used. | ||||
Enter | For | ||||
0 | Seconds | ||||
1 | Minutes | ||||
2 | Hours |