Omron M1 Series User Manual page 571

Password protection status
Password cancellation in progress
Protected by password 1
Protected by password 2
Lok minor alarm/alarm occurring
Enabling/Disabling Conditions
The password is enabled when a value other than 0 is set to User Password 1 Setting/Verification
(H198) and Password 2 Setting/Verification (H99).
From the viewpoint of ensuring security, to make sure that only the person who sets the password can
change or delete it, a password cannot be disabled (password deletion) once it has been enabled.
Moreover, a password cannot be changed.
However, the password is deleted by initializing the inverter itself, and password protection is disabled.
How To Use the Password Function
Perform the following operations to use the password function.
<Setting a password from a password not set status>
When a hexadecimal 4-digit password is entered to one or both of User Password 1 Setting/Verifica-
tion (H198) and Password 2 Setting/Verification (H99), the password is set and it is in protection can-
cellation state.
To use user password 1, select the target to be protected at User password 1 Mode selection (H197).
Note that once a password is set, it cannot be changed or deleted.
<Changing the protection cancellation state to the protected state>
The status of a password changes to the protection state by setting 1 at User Password 1 Setting
(H199). The state also changes to the protection status after turning the inverter back ON again or af-
ter four hours have elapsed since the state was set to the protection cancellation state.
When user password 1 is set, the status of the target to be protected that is set at User password 1
Mode selection (H197) is rewriting prohibited.
When user password 2 is set, the status of all parameters is reading/writing prohibited.
When both two user passwords are set, priority is given to user password alarm code: 2.
<Canceling the protection status (when only one of the user passwords is set)>
The password protection status can be canceled by entering the password from the protection status.
When only one of user password 1 or user password 2 is set, the status of all protection is canceled
by entering the set password.
<Canceling the protection status (when both two user passwords are set)>
When both two user passwords are set, begin entry with user password 2.
When user password 2 is canceled, the status changes to user password 1 protection status, and the
status of the target to be protected selected at User password 1 Mode selection (H197) changes to
M1 Series Standard Type User's Manual (I669)
Least significant digit dot display
Description
Low-speed flashing (1 s
cycle)
Lit
7 Other Functions
Example
7-79
7