Panasonic LB-DH8 series Operator's Manual page 77

Operations
Magazine Address
Magazine Barcode
Web interface operation
Indicates the number of a magazine currently mounted in the drive system.
e.g.,
A L1 5
Module name
Indicates the 1D/2D code of a magazine currently mounted in the drive system.
77
Slot number
Magazine drawer number
R: right magazine drawer
L: left magazine drawer