Chapter 4—System Configuration and Commissioning
56
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Parameter Lock Features
The C445 supports various protection feature options for writing to its parameters,
including:
1.
Administrator password Lock
2.
USB lockout password
3.
Running Lock option
Note:
The Administrator password and Running Lock option also applies to the
Web Pages if an Ethernet Card is installed. The Web Pages also allow for
a separate password to be set to prevent access to the parameters from the
Web Pages.
Administrator Password Lock
The Admin password protection prevents anyone who has not logged into the system with
the proper password from modifying any configuration parameters. All parameters may be
read, but not written.
Out-of-box, there is no active Administrator password protection.
The Administrator password is a 32-bit value that can be set as a Hex, ASCII or decimal
value that fits in 32-bits. Whatever format is used to set the password will need to be used
when entering the password as well, to be sure it is correct. For example, if the password
is set by writing an ASCII value of 1234 and later someone tries to unlock it with a decimal
or hexadecimal value of 1234, it will not work.
The Modbus register addresses that store the 32-bit Administrator password are 5000/
5001. The Modbus register addresses that must be written to when logging in to a system
with an Administrator password set are 5002/5003.
Reading the value at register 5010 will indicate if an Administrator password is set in the
device or not. If a value of 1 is read, this indicates that an Administrator password is active.
A value of 0 indicates that an Administrator password is not currently active.
When 5000 and 5001 each contain hexadecimal zeros (0x0000), this means no password
is set. This is also what must be written to these registers to clear a password. The only
way to write to these registers if there is a password set is to first log in. Then once logged
in, hexadecimal 0s can be written to these register to clear the password. A “Reset to
Factory Defaults” also clears/resets the password. Since this can be accomplished using
the button on the Base Control Module, a C445 with an unknown password can be
recovered in this manner, but will need to be reconfigured. All parameters will have been
set to factory defaults, not just the Admin password.
The Admin password can also be set using the Power Xpert
in
Control Software Tool,
under the Security category. Parameters that are locked in Admin mode are indicated in
Appendix D
Modbus Register Map
