Mitsubishi Electric MELSEC-L Series - Page 186

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(3) Stations that can be accessed when the remote password check is performed
When the CPU module is protected with a remote password, the stations accessible by the connected device and
the LCPU stations that can perform the remote password unlock/lock processes are limited to those in the same
network. The following shows an example of accessible stations.
Ex.
When a remote password has been set in the LCPU on the station 1-1, and the remote password check
has been set in 1) on the station 1-1
The station A is the only connected device that can perform an unlock/lock process for 1) of the station 1-1.
*1 The station A can access the stations marked with ● after the remote password unlock process is completed for 1) of the
station 1-1. It can access the stations marked with  when the communication lines are open. Stations B, C, and D can
access the stations marked with  when the communication lines are open.
●: Stations that can be accessed from the connected device after the remote password unlock process
: Stations that can be accessed from the connected device without performing the remote password unlock
process
Connected
device
*1
(request
source)
Target programmable controller station (request destination)
Station 1-1
LCPU
Station 1-2
LCPU
Station 2-1
LCPU
Station 2-2
LCPU
Station 3-1
LCPU
Station 3-2
LCPU
Station A ●  ●●●●
Station B 
Station C 
Station D 
Ethernet
Ethernet
E71
Station B
Station C Station D
E71
Station A
Remote
password
Remote
password
check
E71 E71
LCPU E71
Ethernet
LCPU E71
LCPU E71
LCPU E71
1)
Network No.1
Network No.2
Station 1-2
1)
Station 1-1
2)
1)
Station 2-1
1) 2) 1)
Station 3-1
1)
Station 3-2
Programming tool
LCPU
Network No.3
Station 2-2
LCPU