Back Up Data; Eeprom Backup; Capacitor Backup - Mitsubishi FX1N-422-BD Hardware Manual

FX1N Series Programmable Controllers
1.5

Back up Data

1.5.1

EEPROM backup

Data includes the Program, Comment, File Registers (D1000 ~ D7999), and parameter data.
This will be stored as long as the EEPROM is not damaged.
If the PLC has been powered up for five minutes or more, the following data will be saved in
the EEPROM at powerdown:
S10 ~ S127, M384 ~ M511, C16 ~ C31, and D128 ~ D255.
1.5.2

Capacitor backup

The capacitor backed memory includes M512 ~ M1535, S128 ~ S999, T240 ~ T255,
C32 ~ C199, C220 ~ C234, and D256 ~ D7999 and the RTC.
The capacitor backed memory will retain programs for a maximum of 10 days, and requires 30
minutes to recharge upon power up.
Note: The FX
days, a peripheral backup power source must be provided.
does not have battery backup, if a system requires backup of more than 10
1N
Introduction 1.
1-14