3.6.2 Password protection
Function code H99 (Password) allows you to enter a password that protects your function code data from illegal
access or modification by a third party. When the password protection is enabled, you cannot read nor write F00
data (Data Protection) from any method except the keypad. In addition, even when the password protection is
temporarily disabled, you cannot read F00 or H99 data from any methods except the keypad.
The password protection can be temporarily canceled with F00.
When the password protection is enabled:
Accessible/changeable
Not accessible or changeable
Accessible/changeable partially
3. OPR MNTR
8. DATA COPY
0. QUICK SET
4. I/O CHECK
10. USER SET
1. DATA SET
5. MAINTENANC
2. DATA CHECK
6. ALM INF
Note:
The function code list can
be displayed, but data of function
codes cannot be accessed or
changed except F00 and H03.
7. ALM CAUSE
9. LOAD FCTR
11. COMM DEBUG
Entering password (Enabling the password protection)
Select H99 from Menu #1 "Data Setting."
Set function code H99 to nonzero.
Changing the data of H99 requires simultaneous keying of
+
keys or
+
keys.
The password is now registered. The screen returns to the
DATA SET one and the password protection becomes
temporarily canceled.
Figure 3.35 Screen Transition for Password Entry
Once a password is registered, the password protection becomes temporarily canceled.
To enable the password protection, follow the procedures on the next page.
Press the
key to establish your entry.
Enter a password with
/
and
keys.
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