Digital Operator Functions
6
-
109
Prohibiting Writing Constants from the Digital Operator
If you set A1-01 to 0, all constants except A1-01 and A1-04 are write protected, U1-
, U2-
, and
U3-
will be displayed. If A1-01 is set to 1, only the constants A1-01, A1-04 and A2-
can be read or
written, U1-
, U2-
, and U3-
will be displayed. All other constants will not be displayed.
If you set one of the constants H1-01 to H1-05 (multi-function contact input terminal S3 to S7 function selec-
tion) to 1B (write constants permitted), you can write parameters from the digital operator when the terminal
that has been set is ON. When the set terminal is OFF, writing constants other than the frequency reference is
prohibited. You can, however, read the constants.
Setting a Password
When a password is set in A1-05, and if the set values in A1-04 and A1-05 do not match, you cannot modify
the settings of constants A1-01 to A1-03, or A2-01 to A2-32.
You can prohibit the setting of all constants except A1-00 by using the password function in combination with
setting A1-01 to 0 (Monitor only).
Related Constants
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
A1-01
Constant access level
Used to set the constant access level (set/read.)
0: Monitoring only (Monitoring drive mode and setting
A1-01 and A1-04.)
1: Used to select user constant
(Only constants set in A2-01 to A2-32 can be read and
set.)
2: ADVANCED
(Constants can be read and set in both quick program-
ming mode and advanced programming mode.)
0 to 2
2
Yes
A
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
A1-01
Constant access level
Used to set the constant access level (set/read.)
0: Monitoring only (Monitoring drive mode and setting
A1-01 and A1-04.)
1: Used to select user constant
(Only constants set in A2-01 to A2-32 can be read and
set.)
2: ADVANCED
(Constants can be read and set in both quick program-
ming mode and advanced programming mode.)
0 to 2
2
Yes
A
A1-04
Password
Password input when a password has been set in A1-05.
This function write-protects constants of the initialize
mode.
If the password is changed, A1-01 to A1-03 and A2-01 to
A2-32 constants can only be changed after inputting the
right password.
0 to
9999
0
No
A
A1-05
Password setting
Used to set a four digit number as the password.
This constant is not usually displayed. When the password
(A1-04) is displayed, hold down the RESET key and press
the Menu key and A1-05 will be displayed.
0 to
9999
0
No
A
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