Omron CJ2 CPU UNIT SOFTWARE User Manual page 280

8 I/O Allocations and Unit Settings
I/O Allocation Method for Each Unit Classification
This section describes the I/O allocation method for each Unit classification (Basic I/O Units, Special
I/O Units, and CPU Bus Units).
I/O Allocation to Basic I/O Units
CJ-series Basic I/O Units are allocated words in the I/O Area (CIO 0000 to CIO 0159). They can be
connected to the CPU Rack or Expansion Racks. The following method is used.
Basic I/O Units in the CPU Rack
Basic I/O Units on the CPU Rack are allocated words from left to right starting with the Unit clos-
est to the CPU Unit. Each Unit is allocated as many words as it requires.
Note Units that have 1 to 16 I/O points are allocated16 bits and Units that have 17 to 32 I/O points are
allocated 32 bits.
Example
From the left →
8-6
← →
Connected Units
CIO
0000
1 2 3 4 5
IN IN IN OUT OUT
16 pt 16 pt 32 pt 32 pt 64 pt
0002 0004 0006
0000 0001 0003 0005 to
0009
CPU Rack
CPU Rack
CJ2 CPU Unit Software User's Manual