Omron CJ2 CPU UNIT SOFTWARE User Manual

6 I/O Memory Areas
6-4
CJ2 CPU Unit Software User’s Manual
*1 The I/O Area can be expanded to include CIO 0160 to CIO 0999 by changing the first words allocated to specified Units.
Settings for the first words can be made using the CX-Programmer to set the first words in the I/O tables. The setting
range for the first words is CIO 0 to CIO 900.
*2 If the I/O Memory Hold Flag (A500.12) is ON, the memory values will be maintained when the operating mode is
changed. If, in addition, the PLC Setup is set to hold the status of the I/O Memory Hold Flag at startup (IOM Hold Bit
parameter), the memory values will be maintained when the power supply is turned ON.
*3 This area is supported only by CJ2H CPU Units. “Synchronous Units” are CPU Bus Units and Special I/O Units that sup-
port synchronous unit operation.
*4 This area is supported only by CJ2M CPU Units.
*5 H512 to H1535 can be set for use only as function block memory or SFC memory.
*6 A960 to A1471 and A10000 to A11535 were added to expand the Auxiliary Area in CJ2 CPU Units. These words cannot
be accessed by CPU Bus Units, Special I/O Units, PTs, and Support Software that do not specifically support the CJ2
CPU Units.
Only the following CPU Bus Units and Special I/O Units specifically support the CJ2 CPU Units.
• EtherNet/IP Unit: CJ1W-EIP21
• Position Control Units: CJ1W-NC214, CJ1W-NC234, CJ1W-NC281, CJ1W-NC414, CJ1W-NC434, CJ1W-NC481,
and CJ1W-NC881
• Analog Input Unit: CJ1W-AD042
• Analog Output Unit: CJ1W-DA042V
6-1-2 I/O Memory Area Structure
Area Size Range
External I/O
allocation
Bit
access
Word
access
Access Change
from Pro-
gramming
Device
Status at
startup
or mode
change
Forc-
ing bit
status
Refer-
ence
Read Write
CIO Area
I/O Area 2,560 bits
(160 words)
CIO 0 to
CIO 159
*1
Basic I/O Units OK OK OK OK OK
Cleared
*2
OK 6-8
Data Link
Area
3,200 bits
(200 words)
CIO 1000 to
CIO 1199
Data links or
PLC links
(conditional)
OK OK OK OK OK OK 6-13
Synchronous
Data Refresh
Area
1,536 bits
(96 words)
CIO 1200 to
CIO 1295
Synchronous
Units
*3
OK OK OK OK OK OK 6-14
CPU Bus Unit
Area
6,400 bits
(400 words)
CIO 1500 to
CIO 1899
CPU Bus
Units (condi-
tional)
OK OK OK OK OK OK 6-15
Special I/O
Unit Area
15,360 bits
(960 words)
CIO 2000 to
CIO 2959
Special I/O
Units (condi-
tional)
OK OK OK OK OK OK 6-16
Pulse I/O
Area
32 bits (4
words)
CIO 2960 to
CIO 2963
Pulse I/O
Modules
*4
OK OK OK OK OK OK 6-17
Serial PLC
Link Area
1,440 bits (90
words)
CIO 3100 to
CIO 3189
Linked PLC
*4
OK OK OK OK OK OK 6-18
DeviceNet
Area
9,600 bits
(600 words)
CIO 3200 to
CIO 3799
DeviceNet
Master (fixed
allocations)
(conditional)
OK OK OK OK OK OK 6-19
Internal I/O
Area
3,200 bits
(200 words)
37,504 bits
(2,344 words)
CIO 1300 to
CIO 1499
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 Cleared
*2
OK 6-20
Holding Area
*5
8,192 bits
(512 words)
H000 to H511 --- OK OK OK OK OK Main-
tained
OK 6-21
Auxiliary Area 48,128 bits
(3,008 words)
A000 to A447 --- OK OK OK No No Depends
on the
address
No 6-23
A448 to A959 --- OK OK OK OK OK
A960 to
A1471
*6
--- OK OK OK OK OK
A10000 to
A11535
*6
--- OK OK OK No No

Omron CJ2 CPU UNIT SOFTWARE Specifications

General

Brand	Omron
Model	CJ2 CPU UNIT SOFTWARE
Category	Software
Language	English