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Misoperation prevention and parameter
setting restriction
4.17.5 Password function (Pr. 296, Pr. 297)
The above parameters can be set when
Pr. 160
User group read selection
= "0".
When
Pr. 296
≠
"9999" (with password lock), note that
Pr. 297
is always available for setting regardless of
Pr. 160
setting.
* "0 or 9999" can be set to Pr. 297 at any time although the setting is invalid (the displayed value does not change).
....Specifications differ according to the date assembled. Refer to page 400 to check the SERIAL number.
(1) Parameter reading/writing restriction level (Pr. 296 )
Level of reading/writing restriction by PU/NET mode operation command can be selected by Pr. 296.
*1 If the parameter reading is restricted by the Pr. 160 setting, those parameters are unavailable for reading even when "" is indicated.
*2 If the parameter writing is restricted by the Pr. 77 setting, those parameters are unavailable for writing even when "" is indicated.
*3 Parameter access from unit where parameter is written in PU operation mode (initially set to operation panel (FR-DU07), parameter unit) is
restricted. (Refer to page 204 for PU mode operation command source selection)
*4 This restricts parameter access from the command source that can write a parameter under Network operation mode (initially RS-485 terminal or
a communication option). (Refer to page 204 for NET mode command source.)
*5 Read/write is enabled only in the simple mode parameters registered in the user group when Pr.160 User group read selection = "9999". Pr.296 and
Pr.297 are always read/write enabled whether registered to a user group or not.
*6 If a communication option is installed, option fault (E.OPT) occurs, and inverter trips. (Refer to page 342.)
Registering 4-digit password can restrict parameter reading/writing.
Parameter
Number
Name Initial Value Setting Range Description
296
Password lock level
9999
0 to 6, 99, 100 to
106, 199
Select restriction level of parameter reading/
writing when a password is registered.
9999 No password lock
297
Password lock/unlock
9999
1000 to 9998 Register a 4-digit password
(0 to 5) *
Displays password unlock error count.
(Reading only)
(Valid when Pr. 296 = "100" to "106")
9999 * No password lock
Pr. 296 Setting
PU Mode Operation Command
*3
NET Mode Operation Command *4
RS-485 Terminal Communication Option
Read *1 Write *2 Read Write *2 Read Write *2
9999
0, 100
*6
× ×××××
1, 101 × × ×
2, 102 ×
3, 103 × ×
4, 104 ×××× ×
5, 105 ××
6, 106 ×× ×
99, 199
Only parameters registered in the user group can be read/written.
*5
(For the parameters not registered in the user group, same restriction level as "4, 104" applies.)
: enabled, ×: restricted