Mitsubishi Electric FR-CC2-P, Instruction Manual

Page: 118 / 184

(N) Operation via communication and its settings
PARAMETER
117
5
GROUP
N
5.7.2
EEPROM write selection during communication
operation
 Communication EEPROM write selection (Pr.342)
• When parameter write is performed from RS-485 communication with the converter unit PU connector, the parameter
storage device can be changed from EEPROM and RAM to RAM only. Use this function if parameter settings are changed
frequently.
• When changing the parameter values frequently, set "1" in Pr.342 Communication EEPROM write selection to write
them to the RAM only. The life of the EEPROM will be shorter if parameter write is performed frequently with the setting
unchanged from "0 (initial value)" (EEPROM write).
NOTE
• Turning OFF the converter unit's power supply clears the modified parameter settings when Pr.342 = "1 (write only to RAM)".
Therefore, parameter settings at next power-ON will be the ones that are last stored to EEPROM.
• The parameter setting written in RAM cannot be checked on the operation panel. (The values displayed on the operation
panel are the ones stored in EEPROM.)
Set the action when the converter unit is performing operation via communication.
Pr. Name
Initial
value Setting
range
Description
342
N001 Communication
EEPROM write selection
0
0
Parameter values written by communication are written to
the EEPROM and RAM.
1
Parameter values written by communication are written to
the RAM.