Mitsubishi Electric MELSEC iQ-R Series User Manual page 198

Precautions
The following section lists the precautions for using remote password.
■Set connection
Set the remote password for the connection used to exchange data 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 exchange the data. (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
device 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 CC-Link IE TSN Plus module for which the parameters are set. When
using multiple CPU modules in a multi-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 a programmable controller on another station
When the external device is accessing a programmable controller on another station via the CC-Link IE TSN Plus module, 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 access station.
9 FUNCTIONS
196
9.5 Security
A
Ethernet
B
C
D
No remote password
parameter