Protecting Subroutines

You can create a Ladder Password, then apply it to protect multiple subroutines and hide their content. When a subroutine is protected, a user cannot export/import it. In addition, the user cannot open, copy, or print it without supplying the password.

Creating and Using a Password

  1. To create a password, select File>Set Ladder Password; then fill in the password field.

  2. To apply the password to a subroutine, right-click the subroutine's name in the Project Navigation window, then select Set as Protected; a small padlock icon is displayed nest to the subroutine's name.
    You can also right-click a module's name and select Protect All Subroutines in Module.

Note

Protection is applied after VisiLogic (not just the project) is closed and reopened.

  1. To remove protection from a subroutine, right-click the protected subroutine's name, then select Set AS Unprotected; the padlock icon disappears.



    You can remove protection from a module in the same way.

Note

The same password may be used for different projects.

Deleting a Ladder Password

  1. To delete a Ladder password from a project, select File>Unset Ladder Password.