Mitsubishi Q2ACPU User Manual page 169

9. MAINTENANCE FUNCTION
POINT
(1) Password registration is valid for parameter files and program files only.
Invalid for other file types. Other file types can be protected by changing
attributes for each file.
(2) The keyword registered in the CPU module cannot be read from the CPU
module. If you forget the password, CPU module file operations will be
impossible. Keep a record of the password, e.g. on paper, and store it in a
safe place.
(3) When a keyword is registered, memory for 1 file is occupied.
(When a keyword is registered in the built-in RAM, 4k bytes are occupied.)
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