Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations - Manual (Page 34)

Memory Organization
Chapter 4
4Ć5
Figure 4.3
Data Table Organization, Factory Configured
Processor Work Area
No. 1
Output
Image Table
Bit/Word Storage
Reserved
Timer/Counter
Accumulated Values (AC)
(or Bit/Word Storage)
Processor Work Area
No. 2
Input
Image Table
Bit/Word Storage
Timer/Counter
Preset Values (PR)
(or Bit/Word Storage)
Expanded Data Table
and/or User Program
(See Figure 1Ć7)
Total
Decimal
Words
8
16
24
64
72
88
128
2048
80
Decimal
Words
Per
Area
8
8
8
40
8
8
40
1920
8
Word
Address
Bit
Address
000
007
010
017
020
026
027
030
077
100
107
110
117
120
127
130
177
200
End of Memory
00
17
00
17
00
17
00
17
00
17
00
17
00
17
00
17
00
May not be used for accumulated values.
Not available for bit/word storage. Bits in this word are used by the processor for battery low condition, message
generation, EPROM transfer and data highway.
Unused timer/counter memory words can reduce data table size and increase user program area.
May not be used for preset values.
Do not use word 127 for block transfer data storage.
1
2
3
4
5
1
2
3
4
5
FactoryĆ
Configured
Data
Table
(Can be
Decreased
to 48 Words)
3
10148-I