Omron CJ2 CPU UNIT SOFTWARE User Manual

8 I/O Allocations and Unit Settings
8-8
CJ2 CPU Unit Software User’s Manual
z I/O Allocation to CPU Bus Units
Each CJ-series CPU Bus Unit is allocated 25 words in the CPU Bus Unit Area (CIO 1500 to
CIO 1899) according the unit number set on the Unit. CPU Bus Units can be mounted to the CPU
Rack or Expansion Racks. The following table shows which words in the CPU Bus Unit Area are
allocated to each Unit.
CPU Bus Units are ignored during I/O allocation to Basic I/O Units. Positions containing CPU Bus
Units are not allocated any words in the I/O Area. The unit numbers of CPU Bus Units are different
from the unit numbers of Special I/O Units. Using the same unit number for both a CPU Bus Unit and
a Special I/O Unit will not result in duplicate use of unit numbers.
*1 With the CJ2H-CPU6@-EIP and CJ2M-CPU3@, words are allocated to the built-in EtherNet/IP port as a CPU Bus Unit.
These words are used to store the network communications status of the port. In the same way as with other CPU Bus
Units, the words are allocated according to the unit number set with the rotary switches on the front of the CJ2H-CPU6@-
EIP or CJ2M-CPU3@.
Unit number Number of words Words allocated
0 25 CIO 1500 to CIO 1524
1 25 CIO 1525 to CIO 1549
2 25 CIO 1550 to CIO 1574
:: :
15 25 CIO 1875 to CIO 1899
Slot Unit Model
Words
required
Words
allocated
Unit
number
Group
0 16-point DC Input Unit CJ1W-ID211 1 CIO 0000 --- Basic I/O Unit
1 Analog Input Unit CJ1W-AD081 10 CIO 2000 to
CIO 2009
0 Special I/O Unit
2 Serial Communica-
tions Unit
CJ1W-SCU41 25 CIO 1525 to
CIO 1549
1 CPU Bus Unit
3 16-point Transistor
Output Unit
CJ1W-OD211 1 CIO 0001 --- Basic I/O Unit
4 Controller Link Unit CJ1W-CLK21 25 CIO 1550 to
CIO 1574
2 CPU Bus Unit
--- Built-in EtherNet/IP
port on CPU Unit *1
CJ2H-CPU68-
E1P
25 CIO 1500 to
CIO 1524
0 CPU Unit (The port
is treated as a CPU
Bus Unit.)
IN
16
pt
0000 2000
2009
CPU
Bus
Unit
CIO
1500
1524
CPU
Bus
Unit
CIO
1525
1549
OUT
16
pt
0001
01234
Example
Power Supply Unit
CPU Unit
Special
I/O
Unit
to to to

Omron CJ2 CPU UNIT SOFTWARE Specifications

General

Brand	Omron
Model	CJ2 CPU UNIT SOFTWARE
Category	Software
Language	English