Mitsubishi Electric 700 Series Instruction Manual page 175

Misoperation prevention and parameter setting restriction
<Unlock>
There are two ways of unlocking the password.
Enter a password in Pr. 297.
Unlocked when a password is correct. If a password is incorrect, an error occurs and not unlocked.
During [Pr. 296 = any of "101 to 106, 199"], if password unlock error has occurred 5 times, correct password will not unlock
the restriction. (During password lock)
Perform all parameter clear.
NOTE
If the password has been forgotten, perform all parameter clear to unlock the parameter restriction. In that case,
other parameters are also cleared.
All parameter clear cannot be performed during the operation.
(3) Parameter operation during password lock/unlock
Parameter operation
Read
Pr. 296
Write
Read
Pr. 297
Write
Performing parameter clear
Performing parameter all clear
∗1
Reading/writing is unavailable when there is restriction to reading by the Pr. 160 setting. (Reading is available in NET mode regardless of Pr. 160 setting.)
∗2
Unavailable during the operation.
∗3
Correct password will not unlock the restriction.
Parameters referred to
Pr. 77 Parameter write selection
Pr. 160 Extended function display selection
170
Unlocked
Pr. 296 ≠ 9999
Pr. 296 = 9999
Pr. 297 = 9999 Pr. 297 = 9999
∗1
∗1 ∗1
∗1
×
Refer to page 166
Refer to page 167
Password registered
Pr. 296 ≠ 9999
Pr. 296 = 101 to 106, 199
Pr. 297 = 0 to 4
(Read value)
×
×
∗2
Locked
Pr. 297 = 5
(Read value)
×
∗3
×
∗2
: enabled, ×: restricted