Omron CP1L-EL20DR-D, Operation Manual

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104
Overview of I/O Memory Area Section 4-1
4-1 Overview of I/O Memory Area
4-1-1 I/O Memory Area
This region of memory contains the data areas that can be accessed as
instruction operands. I/O memory includes the CIO Area, Work Area, Holding
Area, Auxiliary Area, DM Area, Timer Area, Counter Area, Task Flag Area,
Data Registers, Index Registers, Condition Flag Area, and Clock Pulse Area.
Note 1. A0 to A447 are read only and cannot be written. A448 to A959 are
read/write.
2. Bits can be manipulated using TST(350), TSTN(351), SET, SETB(532),
RSTB(533), and OUTB(534).
Instruction
I/O Memory
Area Size Range Task usage Allocation Bit
access
Word
access
Access Change
from CX-
Programmer
Forcing
bit
status
Read Write
CIO
Area I/O Area Input
Area 1,600 bits
(100
words) CIO 0 to
CIO 99 Shared by
all tasks CP1L-EL/EM
CPU Units and
CP-series
Expansion
Units or
Expansion I/O
Units OK OK OK OK OK OK
Output
Area 1,600 bits
(100
words) CIO 100
to CIO
199 OK OK OK OK OK OK
1:1 Link Area 256 bits
(16 words) CIO 3000
to CIO
3015 1:1 Links OK OK OK OK OK OK
Serial PLC Link Area 1,440 bits
(90 words) CIO 3100
to CIO
3189 Serial PLC
Links OK OK OK OK OK OK
Work Area 14,400
bits (900
words) CIO 3800
to CIO
6143 --- OK OK OK OK OK OK
Work Area 8,192 bits
(512
words) W000 to
W511 --- OK OK OK OK OK OK
Holding Area 8,192 bits
(512
words) H000 to
H511
(Note 6) --- OK OK OK OK OK OK
Auxiliary Area 15,360
bits (960
words) A000 to
A959 --- OK --- OK Note 1 Note 1 No
TR Area 16 bits TR0 to
TR15 --- OK OK OK OK No No
Data Memory Area 32,768
words D00000
to
D32767
(Note 7) --- No
(Note
2) OK OK OK OK No
Timer Completion Flags 4,096 bits T0000 to
T4095 --- OK --- OK OK OK OK
Counter Completion Flags 4,096 bits C0000 to
C4095 --- OK --- OK OK OK OK
Timer PVs 4,096
words T0000 to
T4095 --- --- OK OK OK OK No
(Note 4)
Counter PVs 4,096
words C0000 to
C4095 --- --- OK OK OK OK No
(Note 5)
Task Flag Area 32 bits TK0 to
TK31 --- OK --- OK No No No
Index Registers 16 regis-
ters IR0 to
IR15 Function
separately
in each task
(Note 3) --- OK OK Indirect
address-
ing only Specific
instruc-
tions only No No
Data Registers 16 regis-
ters DR0 to
DR15 --- No OK OK OK No No