Remote Password - Mitsubishi Electric MELSEC Q Series Reference Manual

7 APPLICATION FUNCTIONS

7.12 Remote password

QCPU QJ71
LP21
2) Transfer the remote password
to QJ71E71 when the system
is powered on or it is reset.
7 - 40
The remote password function is the function for preventing a remote user from
illegally connecting to a remote I/O module and programmable controller CPU.
The remote password function can be used by setting a remote password for a remote
I/O module.
If a remote password has been set up, the serial communication module and Ethernet
module check the remote password when a connection request is issued from a
remote user to a remote I/O module and programmable controller CPU.
REMARKS
The remote password set for the programmable controller CPU of the remote master
station does not affect the remote passwords of the remote I/O stations.
(1) Setting, changing and cancelling a remote password
(a) Setting a remote password
Set a remote password on the remote password setting screen of GX
Developer. Write the remote password to be set by connecting GX
Developer with the target remote I/O module directly.
The remote I/O module transfers the remote password to the specified
serial communication module and Ethernet module when the system is
powered on or the remote I/O module is reset.
(b) Changing and Cancelling the remote password
By connecting GX Developer with a remote I/O module, the remote
password of the connected remote I/O module can be changed and
cancelled.
The remote password can be changed by setting a new remote password
by GX Developer and writing it into the remote I/O module.
The remote password can be canceled by deleting it by GX Developer and
writing it into the remote I/O module.
The figure below shows the outline of setting, changing, and canceling a remote
password with the Ethernet module.
Ethernet
MELSECNET/H
QJ72
LP25
GX Developer
1) Set, change, and cancel a remote
password and write it into QJ72LP25.
GX Developer
QJ71
E71
3) QJ71E71 checks the remote password.
1) Set, change, and cancel a remote
password and write it into QJ72LP25.
MELSEC-Q
7 - 40