Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 222

(3) Locking/unlocking the remote password
Unlock the remote password of a serial communication module via a modem or the password of an Ethernet
module over Ethernet. When the entered password matches the registered password, the module is allowed to
access the CPU module.
Ethernet
The remote password is transferred
to the connected Ethernet module
when the CPU module is powered
off and then on or is reset.
(4) Setting/changing/clearing a remote password
(a) Setting a remote password
Set a password in the Remote Password Setting window. (
Project window
Write the remote password setting to the CPU module. In a multiple CPU system, write the setting to the
control CPU of the target module.
(b) Changing a remote password
Change the password in the Remote Password Setting window, and write the new remote password setting to
the CPU module.
(c) Clearing a remote password
Click the
the CPU module.
220
Programming tool
Ethernet module
The remote password is
checked.
Programming tool
[Parameter]
button in the Remote Password Setting window, and write the remote password setting to
Unlocks the remote password when
accesses the CPU module, and locks
the password when closes the access line.
Page 463, Appendix 1.4)
[Remote Password]