Causes and corrective actions
6 - 10
Analog input bias and gain calibration values have been set too close.
Check the settings of calibration parameters C3, C4, C6 and C7 (calibration functions).
(Refer to page 5-266.)
Mode designation error
Parameter setting was attempted in the External or NET operation mode while Pr. 77 = "1".
Parameter write was attempted when the command source is not at the operation panel
Check that operation mode is PU operation mode.
Check that the Pr. 551 setting is correct.
After setting the operation mode to the "PU operation mode", make parameter setting.
(Refer to page 5-119.)
When Pr. 77 = "2", parameter write is enabled regardless of the operation mode.
(Refer to page 5-72.)
Set Pr. 551 = "2". (Refer to page 5-130.)
USB memory device operation error
An operation command was given during the USB memory device operation.
A copy operation (writing) was performed while the PLC function was in the RUN state.
A copy operation was attempted for a password locked project.
Check if the USB memory device is operating.
Check if the PLC function is in the RUN state.
Check if the project data is locked with a password.
Perform the operation after the USB memory device operation is completed.
Stop the PLC function. (Refer to page 5-443 and the PLC function programming manual.)
Unlock the password of the project data using FR Configurator2.
(Refer to the Instruction Manuals of FR Configurator2 and GX Works2.)
Parameter read error
A failure has occurred at the operation panel side EEPROM while reading the copied
A failure has occurred in the USB memory device while copying the parameters or reading
the PLC function project data.
Perform parameter copy again. (Refer to page 5-571, page 5-573.)
Perform PLC function project data copy again. (Refer to page 5-443)
The USB memory device may be faulty. Replace the USB memory device.
The operation panel (FR-DU08) may be faulty. Please contact your sales representative.