You configure the properties of a change of value trend log to meet the unique needs of your site.
In WorkStation, in the System Tree pane, select the change of value trend log you want to configure.
On the File menu, click Properties .
In the properties dialog box, click the Basic tab.
Edit the basic properties:
Property |
Description |
Status |
Displays the status of the trend log. |
Enabled |
Displays True if the trend log is enabled. |
Logged variable |
Enter the variable that you want to log. |
Delta |
Select the minimum value change that triggers a new record. |
Activation variable |
Enter the variable that makes the trend log start recording values when the variable is True . Für weitere Informationen siehe Trend Log Activation . |
Activation time |
Specify the time when the trend log is to start recording values. Für weitere Informationen siehe Trend Log Activation . |
Maximum log interval |
Select the maximum time that can pass between two recordings regardless if the delta value has been exceeded or not. |
Log size |
Select the number of records to store before old records are overwritten, including internal records generated by the trend log. Für weitere Informationen siehe Log Record Storage . |
Clear when enabled |
Select True to clear the trend log when it is enabled. |
Click the Meter Info tab.
Edit the meter properties:
Property |
Description |
Is meter log |
Select True if the trend log meter function is active. Für weitere Informationen siehe Meter Function . |
Meter change time |
Enter the time when the meter was changed. |
Meter change user |
Enter the name of the user account that changed the meter. |
End time |
Enter the time when the old meter was replaced. |
End value |
Enter the value the old meter had when it was replaced. |
Start time |
Enter the time when the new meter was installed. |
Start value |
Enter the value of the new meter when it was installed. |
Meter constant |
Enter the constant of the new meter. If the meter counts in kilo (10 3 ), the constant is 1000. |
Min value |
Enter the first value of the new meter after roll-over. |
Max value |
Enter the last value of the new meter before roll-over. |
Click OK .