National Instruments BridgeVIEW, Руководство пользователя

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Chapter 7 Advanced Application Topics
© National Instruments Corporation 7-17 BridgeVIEW User Manual
information about this or any other VI, refer to Appendix A, HMI Function
Reference .
How Do You Programmatically Log
an Operator In to Your Application?
Use the Programmatic Login VI in the System»Security palette. To use
this VI, you must enter a user name and password. If successful, the user is
logged in to the system, and no Login dialog box appears.
How Do You Programmatically Log
an Operator Out of Your Application?
Use the Programmatic Logout VI in the System»Security palette. This VI
logs the current user out of the BridgeVIEW system.
How Do You Identify the Current Operator?
Use the Get Operator Name VI in the System»Security palette. This VI
returns the name and current BridgeVIEW operator name and access level.
For more information about this or any other VI, refer to Appendix A,
HMI Function Reference .
How Do You Restrict Access
to the BridgeVIEW Environment?
When you install BridgeVIEW, no user accounts exist, so all users have full
access to the system. You must create user accounts for the normal security
features to take effect. When you create user accounts, you assign an access
level to each account.
When a user logs in, BridgeVIEW obtains the user’s privileges and access
level. Your HMI VIs also can enforce security by determining whether the
current user can operate, or even see, a particular control or indicator.
See the section Operator Interface Security in this chapter for more
information about using security in your HMI.
How Do You Create and Modify User Accounts?
To create and modify user accounts, you must have the Create/Edit User
Accounts privilege. To change a user’s privileges, you also must have the
Configure User Privileges privilege. To edit the list of user accounts,