Communication Eeprom Write Selection (Pr. 342) - Mitsubishi 700 Series Instruction Manual

INVERTER SETTINGS
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
Name
Number
Communication
342 EEPROM write
selection
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.
46
Default Setting
Value Range
Parameter values modified via
0 communications are written to both EEPROM
0 and RAM.
Parameter values modified via
1
communications are written only to RAM.
Description