Mitsubishi 700 Series

INVERTER SETTINGS
46
3.4 Communication EEPROM Write Selection (Pr. 342)
When parameters are written via communications, by default both volatile RAM and nonvolatile
EEPROM contents are modified. Due to the limited write cycle lifetime of EEPROM memory, however, it
may be desirable to modify only the contents of RAM when frequent parameter writes via
communications are necessary.
Parameter
Number
Name
Default
Value
Setting
Range
Description
342
Communication
EEPROM write
selection
0
0
Parameter values modified via
communications are written to both EEPROM
and RAM.
1
Parameter values modified via
communications are written only to RAM.
When frequently modifying parameter values via communications, change the value of Pr. 342 to a “1” in
order to write them only to RAM. Performing frequent parameter writes to EEPROM will shorten the
lifetime of the component.
REMARKS
When Pr. 342 is set to a value of "1" (write to RAM only), powering off the inverter will erase the changed
parameter values. Therefore, the parameter values available when
power is switched on again are those
that were previously stored in EEPROM.