Overview Of The Data Areas - Omron CP1H-X40D Operation Manual

Overview of I/O Memory Area
4-1-2

Overview of the Data Areas

Note
146
■ CIO Area
It is not necessary to input the "CIO" acronym when specifying an address in
the CIO Area. The CIO Area is generally used for data exchanges, such as
I/O refreshing with PLC Units. Words that are not allocated to Units may be
used as work words and work bits in the program.
X and Y CPU Units
Bit 15
Word CIO 0
CIO 16
CIO 17
Not used (see note).
CIO 99
CIO 100
CIO 116
CIO 117
Not used (see note).
CIO 999
CIO 1000
Data Link Area
CIO 1199
CIO 1200
CIO 1499
CIO 1500
CPU Bus Unit Area
(25 words/Unit)
CIO 1899
CIO 1900
Not used (see note).
CIO 1999
CIO 2000
Special Unit Area
(10 words/Unit)
CIO 2959
CIO 2960
Not used (see note).
CIO 3100
Serial PLC Link Area
(CIO 3199)
CIO 3200
DeviceNet Area
CIO 3799
CIO 3800
CIO 6143
The parts of the CIO Area that are labelled "not used" may be used in pro-
gramming as work bits. In the future, however, unused CIO Area bits may be
used when expanding functions. Always use Work Area bits first.
I/O Area (Inputs: CIO 0 to CIO 16, Outputs: CIO 100 to CIO 116)
These words are allocated to built-in I/O terminals of CP1H CPU Units and
CP-series Expansion Units or Expansion I/O Units. Input words and output
bits that aren't allocated may be used in programming.
Built-in Analog Input Area (Built-in Analog Inputs: CIO 200 to CIO 203,
CIO 210 to CIO 211) (XA CPU Units Only)
These words are allocated to built-in analog I/O terminals of CP1H XA CPU
Units. Words that aren't used in data links may be used in programming.
Data Link Area
These words are used when the Controller Link auto-setting area is set to the
link area or for PLC links. Words that aren't used in data links may be used in
programming.
00
Input Area
Output Area
Work Area
Work Area
Section 4-1
XA CPU Units
Bit
15
Word
CIO 0
Input Area
CIO 16
CIO 17
Not used (see note).
CIO 99
CIO 100
Output Area
CIO 116
CIO 117
Not used (see note).
CIO 199
CIO 200
Built-in Analog I/O Areas
CIO 211
CIO 212
Not used (see note).
CIO 999
CIO 1000
Data Link Area
CIO 1199
CIO 1200
Work Area
CIO 1499
CIO 1500
CPU Bus Unit Area
(25 words/Unit)
CIO 1899
CIO 1900
Not used (see note).
CIO 1999
CIO 2000
Special Unit Area
(10 words/Unit)
CIO 2959
CIO 2960
Not used (see note).
CIO 3100
Serial PLC Link Area
(CIO 3199)
CIO 3200
DeviceNet Area
CIO 3799
CIO 3800
Work Area
CIO 6143
0