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MELSEC-Q
7 FUNCTION
(1) Password Registration
To register the password, select GX Developer Online Password
setup/keyword set up for writing to PLC Register password.
(a)
(b)
(c)
(d)
(e)
(f)
Each item is described below:
(a) Target memory ....................Specifies the memory storing the file whose
password is to be registered or changed.
(b) Data type..............................Displays the type of a file stored in the target
memory.
(c) Data name ...........................Displays a filename of a file stored in the target
memory.
(d) Registration..........................Displays an asterisks " " that indicates a
password-protected file.
(e) Password .............................Defines or changes a password.
(f) Registration Condition
1) Write Protect ................Write operation is restricted by a password.
(Reading is not allowed.)
2) Read/Write protect.......Read/Write operation is restricted by a
password.
3) Clear.............................Password is cleared.
(Sets password currently registered in
"Password".)
POINT
(1) Password-protected files are limited to program files, device comment files, and
device initial value files. Other files cannot be password-protected.
(2) The password registered to a file can not read out from the file.
If the password can not be remembered, file operation other than following can
not be performed.
• Program memory/Memory card: Format PLC memory
• Standard ROM: Write to PLC (Flash ROM)
Take notes of the password registered and keep it on hand.
