Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 41)

Memory Organization
Chapter 4
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Memory is divided into three major sections: data table, user program and a
message storage area. The areas store input status, output status, your program
instructions and messages.
We describe these areas in detail so you can gain programming flexibility using
your processor.
Data Table
The first part of memory is the data table (Figure 4.2). The processors are
factory configured for 128 words. Figure 4.3 shows memory structure with a
factory configured data table. The specific concepts throughout this publication
refer to a factory configured data table.
Figure 4.2
Memory Structure
Data Table
Main Program
Subroutine
Message Storage Area
User Program
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Memory Areas