Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 501)

MicroLogix 1000 and PLC-500 A.I. Series Software Reference
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File Extension Type of File
XRF Cross reference file
XRI Index for cross reference file
001 Ladder backup file (oldest)
002 Ladder backup file (next oldest)
(3 digit number) Ladder backup file (highest number is most recent)
The following files are created by the Repair/Compact Data Base function. You may
restore them by using the Restore Data Base from Backup function from the Utility
menu.
File Extension Type of File
DBK Backup of .DSC (description text) file
RBK Backup of .RPD (rung/page database) file
XBK Backup of .XRF (cross reference file) file
The following files are created by the Wiring Logistics Interface reporting option.
File Extension Type of File
DFG Ladder logic exported to Wiring Logistics
DEV Device file for Wiring Logistics
MDL Module file
The following files are created by the Cause and Effect Database function.
File Extension Type of File
CEI Index for cause and effect database
CET Cause and effect table