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CHAPTER 3 CPU MODULE FUNCTIONS
3
3.11 File Password 32
3.11.2 Password authentication
(2) By the FTP server
To access a password-protected file from the outside by using the FTP server function, password authentication
is required for each file. To change a file to access, password authentication is required again.
: Authentication required, ⎯: Authentication not required
Authenticate a password by using the password authentication FTP command.
For details on commands, refer to the following.
MELSEC-L CPU Module User's Manual (Built-In Ethernet Function)
(3) By the MC protocol
To access a password-protected file from the outside by using the MC protocol, the request message format of
the MC protocol must be changed and a command must be specified for the file password 32.
1. Append "Keyword" at the end of the request message, and set a password in that area.
2. Authenticate the password using the password set to "Keyword"
3. For the commands requiring password authentication, specify 0004, subcommand in a request
massage, as a command for the password 32.
For details, refer to the following.
MELSEC-Q/L MELSEC Communication Protocol Reference Manual
Operation Command
Password authentication
Data write Data read
Deleting a file of a CPU module delete ⎯
Reading a file of a CPU module get ⎯
Deleting a file of a CPU module mdelete ⎯
Reading a file of a CPU module mget ⎯
Changing the file name of a CPU module rename ⎯
Changing or displaying the file attribute of a CPU module change ⎯
Operation Command name
Disable
Password (Write)
quote passwd-wr <passwor
d characte
r string>
Disable
Password (
Read)
quote passwd-
rd <passwor
d characte
r string>
Function Command (subcommand)
File delete 1822 (0004)
File attribute change 1825 (0004)
File copy 1824 (0004)
File open 1827 (0004)
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