MITSUBISHI ELECTRIC FR-S520 - Manual (Page 106)

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.10.8 Parameter write inhibit selection
You can select between write-enable and disable for parameters. This function is
used to prevent parameter values from being rewritten by incorrect operation.
Parameter Name
Factory
Setting
Setting
Range
Remarks
77
Parameter
write disable
selection
0 0, 1, 2 Setting is enabled when Pr. 30 = "1"
<Setting>
Pr. 77 Setting Function
0
Parameter values may only be written during a stop in the PU operation
mode. (*)
1
Write disabled.
Values of Pr. 22, Pr. 30, Pr. 75, Pr. 77 and Pr. 79 can be written.
2
Write can be performed during operation. Write can be performed
independently of the operation mode.
CAUTION
•
* The parameters * screened in the parameter list can be set at any time. Note
that the Pr. 70 and Pr. 72 values may be changed during PU operation only.
•
If Pr. 77 = 2, the values of Pr. 17, Pr. 23, Pr. 28, Pr. 60 to Pr. 63, Pr. 71, Pr. 79,
Pr. 98, Pr. 99, CLr cannot be written during operation. Stop operation when
changing their parameter settings.
•
By setting "1" in Pr. 77, the following clear operations can be inhibited:
Parameter clear
All clear