When you assign a password to a system project in PLC-Lab, you can only change the system the next time you open it if you know this password. When you open a system with password protection, it is in read-only mode. This means that the properties of system objects cannot be changed. It is also no longer possible to add objects.
In the following image, a system with password protection is open.
|1||If a system is opened in read-only mode, the lock symbol is displayed within the mouse icons. When you click on this symbol, a password query appears. If this query is answered correctly, the project can then be edited as usual.|
|2||No action is possible within the tools, so no new objects can be added.|
|3||All actions are deactivated and therefore not applicable to the system project.|
|4||Most elements of the symbol table are deactivated. It is not possible to add new symbols or change existing ones.|
|5||You can still select devices. This is necessary, for example, so that a different IP address can be set for an external device or another network card on the PC can be used for communication. It would also be possible to set the respective TIA version when working with PLCSIM 1200/1500 in TIA. To do this, select the device you want to use and then click on the properties button. Then the properties dialog for the device becomes visible and you can make the settings. However, it is not possible to save these settings.|
If you want to protect a system with a password, proceed as follows:
When you close and reopen the system project, the write protection is active, i.e. the project cannot be changed.
When you open a system project with password protection, the write protection is active and the system cannot be changed. If you have the password, you can unlock the system and remove the write protection. Proceed as follows:
The procedure for changing an existing password is described below.
If you want to permanently remove the password for a system project with password protection, proceed as follows: