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Overview of Word Allocations Section 3-1
3-1 Overview of Word Allocations
The words shown in the following diagram are allocated according to the unit
number setting. For each Unit, there are 25 words allocated in the CIO Area
and 100 words allocated in the DM Area.
First word allocated in the CIO Area: n = CIO 1,500 + (25 x unit number)
First word allocated in the DM Area: m = D30,000 + (100 x unit number)
Note The CPU Bus Unit Setup words are not used with a CS/CJ-series DeviceNet
Unit.
CPU Bus Unit
Unit number: 0
CIO Area
Unit #0
Unit #1
Unit #15
Unit #0
Unit #1
Unit #15
CPU Bus Unit
Allocated DM Area words
CPU Unit
DeviceNet Unit
Local memory
Software switches
(I/O refresh) status
(I/O refresh) status
setup tables
Local memory
CIO 1500
CIO 1501
CIO 1524
CIO 1525
CIO 1526
CIO 1549
CIO 1875
CIO 1899
25 wds
25 wds
25 wds
25 wds
100 wds
100 wds
100 wds
100 wds
D30000
D30001
D30099
D30100
D30101
D30199
D31500
D31599