Overview

Protection by a password helps prevent unwanted access to the data storage zone of the SD memory card (if a valid card is inserted in the CPU).

For Modicon M580 CPUs in a project created by Control Expert with version:

  • Earlier than version 15.1, you can provide password protection for data storage access.

  • Version 15.1 or later, you can provide password protection for both web diagnostics and data storage access.

Password

The password is case-sensitive and contains 8 to 16 alphanumeric characters. The password robustness is increased when it contains a mix of upper and lower case, alphabetical, numerical, and special characters.

NOTE: When importing a ZEF file, the Data Storage/Web password is stored inside the module only if the File encryption option is selected.

Changing the Password

It is possible to change a password at any time.

NOTE: Data Storage/Web password has a default value in Control Expert application. This default value depends on the version of Control Expert, and is:

  • datadownload for Control Expert versions earlier than V15.1.

  • webuser for Control Expert versions V15.1 and later.

Changing the default password is mandatory, or not, depending on the module firmware version:

  • For firmware V4.01 and later, you need to change the Data Storage/Web password default value, otherwise it will not be possible to build the Control Expert application.

  • For firmware versions earlier than V4.01 it is not mandatory but strongly advised to change Data Storage/Web password default value.

Procedure for changing the Data Storage/Web password:

Step

Action

1

In the project browser right-click Project.

2

Select Properties command from the popup menu.

Result: The Properties of Project window appears.

3

Select Project & Controller Protection tab.

4

In the Data Storage (or Web Diagnostics / Data Storage) field, click Change password ... .

Result: The Modify Password window appears.

5

Enter previous password in the Old password field.

6

Enter the new password in the Entry field.

7

Enter the confirmation of the new password in the Confirmation field.

8

Click OK to confirm.

9

Click OK or Apply in the Properties of Project window to confirm all changes.

If you click Cancel in the Properties of Project window, all changes are canceled.

Resetting the Password

Resetting the password assigns its default value to the Data Storage/Web password in the Control Expert application if the current password is confirmed.

To reset the password:

Step

Action

1

In the project browser right-click Project.

2

Select Properties command from the popup menu.

Result: The Properties of Project window appears.

3

Select Project & Controller Protection tab.

4

In the Data Storage (or Web Diagnostics / Data Storage) field, click Reset password... .

Result: The Password window appears.

5

Enter current password in the Password field.

6

Click OK to confirm.

7

Click OK or Apply in the Properties of Project window to confirm all changes. The new password is the default password: datadownload.

If you click Cancel in the Properties of Project window, all changes are canceled.