Omron CJ - 08-2008 Operation Manual page 394

I/O Allocations
I/O Allocation to Special
I/O Units
346
Example
The following example shows the I/O allocation to Basic I/O Units in the CPU
Rack and two CJ-series Expansion Racks.
From the left→
From the left→
From the left→
Each CJ-series Special I/O Unit is allocated ten words in the Special I/O Unit
Area (CIO 2000 to CIO 2959) according the unit number set on the Unit. Spe-
cial I/O Units can be mounted to the CJ-series CPU Rack or CJ-series Expan-
sion Racks.
Refer to 2-4 I/O Units for more details on the available Special I/O Units.
■ Word Allocations
The following table shows which words in the Special I/O Unit Area are allo-
cated to each Unit.
Unit number
0 CIO 2000 to CIO 2009
1 CIO 2010 to CIO 2019
2 CIO 2020 to CIO 2029
:
15 CIO 2150 to CIO 2159
:
:
95 CIO 2950 to CIO 2959
Special I/O Units are ignored during I/O allocation to Basic I/O Units. Positions
containing Special I/O Units aren't allocated any words in the I/O Area.
1 2 3 4
IN IN IN OUT OUT
16 pt 32 pt 64 pt 16 pt 32 pt
0000 0001 0003 0007 0008
to
0002 0009
0006
1 2 3
Expansion Rack
IN IN OUT
16 pt 32 pt 8 pt
0010 0011 0013
0012
1 2 3
Expansion Rack
IN IN OUT
16 pt 32 pt 16 pt
0014 0015 0017
0016
Words allocated
:
:
:
Section 8-1
5
CPU Rack