Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 131)

Design Aids and Documentation
Chapter 10
10-5
Figure 10.4
PLC-2/30 Memory Organization
Total
Decimal
Words
8
64
72
128
256
384
512
640
Up to
8192
Decimal
Words
Per Area
8
56
8
56
128
128
128
128
Processor Work Area
No. 1
Rack 1
Rack 2 020–027
Rack 3
Rack 4
Rack 5
Rack 6
Rack 7
030–037
010–017
040–047
050–057
060–067
070–077
Processor Work Area
No. 2
Rack 1
Rack 2 120–127
Rack 3
Rack 4
Rack 5
Rack 6
Rack 7
130–137
110–117
140–147
150–157
160–167
170–177
Timer/Counter ACC Values or
Internal Storage
Timer/Counter Preset Values or
Internal Storage
Expansion
1
Expansion
2
Expansion
3
(etc.)
User Program Storage
(User Program Begins
After End of Last
Data Table Expansion)
End of Program
Message Storage
Octal
Word Address
000
007
010
77
100
107
110
177
200
277
300
377
400
577
600
777
1000
1177
1200
Output Image Table
Rack address areas
that are not
configured as output
image table become
available for
timer/counter
accumulated values or
word/bit storage.
Input Image Table
Rack address areas
that are not
configured as input
image table become
available for
timer/counter preset
values or word/bit
storage.
Data table can be expanded
in 128 word increments
(unused sections are
utilized for user program
storage) up to 8064
words maximum.
027 –– Bits in this word are used
by the processor for battery
low condition, message
generation and data highway.
125 and 126 –– These words are
used to indicate remote rack
fault status in a remote I/O
system.
Report generation messages
can be stored in memory
locations not used by data
table or user program.
1
2
3
1
2
3
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