Overview Of The Data Areas; Cio Area - Omron CP1L-EL20DR-D Operation Manual

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

Overview of the Data Areas

Note
3. Index registers and data registers can be used either individually by task
or they can be shared by all the tasks (the default is individual use by task).
4. Timer PVs can be refreshed indirectly by force-setting/resetting the Timer
Completion Flags.
5. Counter PVs can be refreshed indirectly by force-setting/resetting the
Counter Completion Flags.
6. H512 to H1535 are used as a Function Block Holding Area. These words
can be used only for function block instances (internally allocated variable
area).
7. Data Memory Area for CPU Units with 20 I/O Points: D0 to D9999 and
D32000 to D32767.

■ 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.
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 99, Outputs: CIO 100 to CIO 199)
These words are allocated to built-in I/O terminals of CP1L-EL/EM CPU Units
and CP-series Expansion Units or Expansion I/O Units. Input words and out-
put bits that aren't allocated may be used in programming.
Bit 15
Word CIO 0
Input Area
CIO 99
CIO 100
Output Area
CIO 199
Not used (see note).
CIO 1900
Reserved for system.
CIO 1999
Not used (see note).
CIO 3000
1:1 Link Area
CIO 3015
Not used (see note).
CIO 3100
Serial PLC Link Area
CIO 3189
Not used (see note).
CIO 3800
Work Area
CIO 6143
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