Omron CP1L CPU UNIT - 03-2009, Operation Manual

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Overview of I/O Memory Area Section 4-1
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 10, 14 or 20 I/O Points: D0 to D9999
and D32000 to D32767.
4-1-2 Overview of the Data Areas
■
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.
Note 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 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.
Input Area
Output Area
Not used (see note).
1:1 Link Area
Work Area
CIO 0
Reserved for system.
CIO 3063
CIO 3800
CIO 1999
CIO 3189
CIO 6143
CIO 100
CIO 99
CIO 199
15
00
Bit
Not used (see note).
Not used (see note).
Not used (see note).
Serial PLC Link Area
CIO 3100
CIO 3000
Word
CIO 1900