National Instruments BridgeVIEW 用户手册
Chapter 6
Historical Data Logging and Extraction
© National Instruments Corporation
6-3
How Do You Configure Historical Logging?
You can reach the Historical Logging Configuration dialog box by
selecting Configure»Historical… from the Tag Configuration Editor.
Figure 6-1 shows the Historical Logging Configuration dialog box and
Table 6-1 lists parameters you can configure for historical logging.
selecting Configure»Historical… from the Tag Configuration Editor.
Figure 6-1 shows the Historical Logging Configuration dialog box and
Table 6-1 lists parameters you can configure for historical logging.
Figure 6-1. Historical Logging Configuration Dialog Box
Table 6-1. Parameters You Can Configure for Historical Logging
Selection
Description
Citadel Data Directory
Path that determines the directory where historical data files are stored
on disk.
on disk.
Store absolute path
Determines whether the absolute path is stored.
Start logging on system
start-up
start-up
Determines whether the BridgeVIEW Engine automatically begins
logging historical data when the Engine launches.
logging historical data when the Engine launches.
Days to keep historical
files
files
Determines how many days worth of historical log files to keep on disk.
Anything older than the number of days configured here is deleted
automatically.
Anything older than the number of days configured here is deleted
automatically.
Maximum time
between log records
between log records
Time, in seconds, that determines the logging rate for tags that vary
slowly.
slowly.