Parameter Write Selection (Pr. 77) - Mitsubishi Electric FR-E700 Series Instruction Manual

Parameter
6.17.2

Parameter write selection (Pr. 77)

You can select whether write to various parameters can be performed or not. Use this function to pre-
vent parameter values from being rewritten by misoperation.
Pr. No. Name
77
Parameter write selection
The above parameter can be set when Pr. 160 "User group read selection" = 0.
Pr. 77 can be always set independently of the operation mode and operation status.
Write parameters only at a stop (Pr. 77 = 0)
Parameters can be written only during a stop in the PU operation mode.
The half-tone screened parameters in the parameter list (Tab. 6-1) can always be written, regardless of
the operation mode and operation status. However, Pr. 72 "PWM frequency selection", Pr. 240 "Soft-
PWM operation selection" and Pr. 275 "Stop-on contact excitation current low-speed multiplying fac-
tor" can be written during operation in the PU operation mode, but cannot be written in external op-
eration mode.
Disable parameter write (Pr. 77 = 1)
Parameter write is not enabled. (Reading is enabled.)
Parameter clear and all parameter clear cannot be performed, either.
The parameters given below can be written if Pr. 77 = 1.
Parameter
Tab. 6-50: Parameters that can be written even if Pr. 77 = 1
FR-E700SC EC
Setting
Initial Value Description
Range
0 Write is enabled only during a stop.
1 Parameter write is not enabled.
0
Parameter write is enabled in any operation mode
2
regardless of operation status.
Name
22 Stall prevention operation level
75 Reset selection/disconnected PU detection/PU stop selection
77 Parameter write selection
79 Operation mode selection
160 User group read selection
296 Password lock level
297 Password lock/unlock
Misoperation prevention and parameter setting restriction
Refer to
Parameters referred to
Section
79 Operation mode 6.18.1
selection
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