PLC Programming

4 - The Individual Components
To protect your files from unauthorized access CoDeSys offers the option of using a password to
protect against your files being opened or changed.
Enter the desired password in the field Password. For each typed character an asterisk (*) appears in
the field. You must repeat the same word in the field Confirm Password. Close the dialog box with
OK. If you get the message:
"The password does not agree with the confirmation",
then you made a typing error during one of the two entries. In this case repeat both entries until the
dialog box closes without a message.
If you now save the file and then reopen it, then you get a dialog box in which you are requested to
enter the password. The project can then only be opened if you enter the correct password. Otherwise
CoDeSys reports:
"The password is not correct."
Along with the opening of the file, you can also use a password to protect against the file being
changed. For this you must enter a password in the field Write Protection Password and confirm this
entry in the field underneath.
A write-protected project can be opened without a password. For this simply press the button Cancel,
if CoDeSys tells you to enter the write-protection password when opening a file. Now you can compile
the project, load it into the PLC, simulate, etc., but you cannot change it.
Of course it is important that you memorize both passwords. However, if you should ever forget a
password, then contact the manufacturer of your PLC.
The passwords are saved with the project.
In order to create differentiated access rights you can define user groups and "Passwords for user
groups").
'Sourcedownload'
The following dialog will be opened when you select this category:
Option dialog for the category Sourcedownload
You can choose to which Timing and what Extent the project is loaded into the controller system.
The option Sourcecode only exclusively involves just the CoDeSys file (file extension .pro). The
option All files also includes files such as the associated library files, visualization bitmaps,
configuration files, etc.
Using the option Implicit at load allows the selected file range to be automatically loaded into the
controller system on the command 'Online' 'Download'.
Using the option Implicit at create boot project allows the selcted file range to be automatically
loaded into the controller system on the command 'Online' 'Create boot project'.
CoDeSys V2.3 4-11