Mitsubishi Electric MELSEC-Q00U(J)CPU

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CHAPTER 3 FUNCTIONS
3
3.19 Security Function 3.19.2 File password 32
(b) Authentication by the FTP server
To access a password-protected file from external devices using the FTP server function, password
authentication is required for each file. Authentication is required whenever files are accessed.
: Authentication required, -: Authentication not required
To authenticate a password, use FTP commands for password authentication. Once the password is
authenticated, it is valid until the accessed external device logs out from the FTP server or the network line is
disconnected. (A password does not need to be authenticated every time the authentication target FTP
commands are executed.)
The executability of FTP commands for password authentication differs depending on the access path to the
CPU module.
: Executable, ×: Not executable
● If the Ethernet module that does not support the file password 32 function is used, observe the following points.
• Set the same password for a read password and writ password.
• The number of characters in the password must be four.
● For details of FTP commands, refer to the following.
QnUCPU User's Manual (Communication via Built-in Ethernet Port)
Operation FTP command
Password authentication
Data write Date read
Deleting a file in a CPU module delete -
Reading a file from a CPU module get -
Deleting a file in a CPU module mdelete -
Reading a file from a CPU module mget -
Changing the name of a file in a CPU module rename -
Changing or displaying the attribute of a file in a CPU module change -
FTP command for password
authentication
Operation
quote passwd-rd<password> Setting, displaying, and clearing a read password (file password 32) in a CPU module
quote passwd-wr<password> Setting, displaying, and clearing a write password (file password 32) in a CPU module
quote keyword-set<password> Setting, displaying, and clearing a file access password in a CPU module
FTP command for password
authentication
Access path
Via Ethernet module supporting the
file password 32 function
Via Ethernet module not supporting
the file password 32 function
quote passwd-rd<password> ×
quote passwd-wr<password> ×
quote keyword-set<password> ×