Omron CP1H CPU Operation Manual page 177

Overview of I/O Memory Area
Area
TR Area 16 bits
Data Memory Area 32,768
words
Timer Completion Flags 4,096 bits
Counter Completion Flags 4,096 bits
Timer PVs 4,096
words
Counter PVs 4,096
words
Task Flag Area 32 bits
Index Registers 16 regis-
ters
Data Registers 16 regis-
ters
Note
Size Range Task usage
TR0 to Shared by
TR15 all tasks
D00000
to
D32767
T0000 to
T4095
C0000 to
C4095
T0000 to
T4095
C0000 to
C4095
TK0 to
TK31
IR0 to Function
IR15 separately in
each task
(Note 3)
DR0 to
DR15
1. 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).
2. Bits can be manipulated using TST(350), TSTN(351), SET, SETB(532),
RSTB(533), and OUTB(534).
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.
Allocation Bit Word
access access
--- OK OK
--- No OK
(Note
2)
--- OK ---
--- OK ---
--- --- OK
--- --- OK
--- OK ---
--- OK OK
--- No OK
Section 4-1
Access Change
from CX-
Read Write
Programmer
OK OK No
OK OK OK
OK OK OK
OK OK OK
OK OK OK
OK OK OK
OK No No
Indirect Specific No
address- instruc-
ing only tions only
OK OK No
Forcing
bit
status
No
No
OK
OK
No
(Note 4)
No
(Note 5)
No
No
No
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