Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 129)

Design Aids and Documentation
Chapter 10
10-3
Figure 10.2
PLC-2/20 Processor Memory Organization
17
0 0 0 1
Total Decimal
Word Used
Decimal Words
Used in Each
Area
8
24
40
64
72
88
104
128
192
256
2048
4096
6144
8192
8
16
16
24
8
16
16
24
64
64
1792
2048
2048
2048
16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
0 1 1 0 1 0 0 1 1 0 0 0
Processor Work Area
No. 1
16 Bit PLC-2/20 Word
Output Image Table
Reserved
Additional Outputs
or Timer/Counter
Accumulated Values (AC)
(Or Bit/Word Storage)
Timer/Counter
Accumulated Values (AC)
(Or Bit/Word Storage)
Processor Work Area
No. 2
Input
Image Table
Additional Inputs
or Timer/Counter
Preset Values (PR)
(Or Bit Word Storage)
Timer/Counter
Preset Values (PR)
(Or Bit Word Storage)
Timer/Counter
Accumulated Values (AC)
(Or Storage)
Timer/Counter
Preset Values (PR)
(Or Storage)
User Program
Instructions
User Program
Instructions
User Program
Instructions
User Program
Instructions
Messages
Octal
Address
Word Bit
000
007
010
026
027
030
047
050
077
100
107
110
127
130
147
150
177
200
277
300
377
00
17
00
17
00
17
00
17
00
17
00
17
00
00
00
17
00
17
00
17
Data
Table
As
Factory
Shipped
or
Default Data
Table
Expanded
To
Maximum
Size
(256
Words)