Allen-Bradley MicroLogix 1000

Programming Overview
4–9
If retentive data was lost on power down, the backup data from the EEPROM is
transferred to the RAM and used as the retentive data. In addition, status file bit
S2:5/8 (retentive data lost) is set and a recoverable major error occurs when going to
run.
CPU
EEPROM
Backup Data
Retentive Data
Program Files
RAM
CPU Workspace
Retentive Data
Program Files
Programming Device
Programming
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