Chapter 3
Tag Configuration
3-4
©
National Instruments Corporation
Figure 3-1.
Tag Configuration Editor
The Tag Configuration Editor records all tag information and Engine
parameters and stores this information in a BridgeVIEW Configuration
File with the extension
.scf
(SCADA Configuration File). The
BridgeVIEW Engine reads this file to determine all of the configuration
parameters for execution. With the Tag Configuration Editor, you can
specify the following:
•
Tags used in the system
•
File paths for historical data and event logging
The
.scf
file does not contain any information about the VIs in your
HMI. In fact, it is not specific to a single user application. Multiple user
applications can run concurrently as long as they use the same set of tags.
When you launch the Tag Configuration Editor, the last opened
.scf
file
opens automatically.
Note
Only one
.scf
file can be loaded and running in the BridgeVIEW Engine
at a time.
If you edit a
.scf
file while the Engine is running and select Save or
Save As…, a dialog box confirms if you want to update the Engine
with your latest changes. If you want to update the Engine and any static
attributes have been changed, the Engine shuts down and restarts. If you
have changed only dynamic attributes in the
.scf
file, the Engine is
updated without restarting.
