Mitsubishi Electric MELSEC iQ-R Series User Manual page 69

Precautions
The following section describes the precautions for using remote password.
■Set connection
Set the remote password for the connection used for data communication with an external device that can execute the unlock/
lock processing.
■When remote password is set for UDP/IP connection
• Determine the external device to communicate with and perform data communication. (With UDP/IP, after the remote
password is unlocked, data can be exchanged with devices other than the unlocked external device too. Determine the
communication destination before starting use.)
• Always lock the remote password after data communication is finished. (If the remote password is not locked, the unlocked
state is held until timeout occurs.)
■TCP/IP close processing
If the TCP/IP is closed before the TCP/IP is locked, the CPU module will automatically start the lock processing.
■Remote password valid range
The remote password is valid only for access from the RJ71GN11-T2 for which the parameters are set. When using multiple
CPU modules in a multiple CPU system, set a remote password for each CPU module for requiring a remote password.
Enable/
Disable
Remote password
check
Remote password
parameter
The remote password is checked when accessing with path A or B.
The remote password is not checked when accessing with path C or D.
■Accessing the programmable controller of another station
When the external device is accessing another station's programmable controller via the RJ71GN11-T2, it may not be
possible to access the programmable controller if a remote password is set for the CPU module at the relay station or station
to be accessed.
A
Ethernet
B
C
D
No remote password
parameter
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1 FUNCTIONS
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1.4 Security