Overview Of Word Allocations - Omron SYSMAC CS Series Operation Manual

Overview of Word Allocations

4-1

Overview of Word Allocations

Unit #0
Unit #1
Unit #15
Unit #0
Unit #1
Unit #15
Note
110
The words shown in the following diagram are allocated according to the unit
number setting. For each CPU Bus 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)
PLC CPU Unit
CPU Bus Unit CIO Area
CIO 1500
CIO 1501
25 words
CIO 1524
CIO 1525
CIO 1526
25 words
CIO 1549
CIO 1875
25 words
CIO 1899
CPU Bus Unit DM Area
D30000
D30001
100 words
D30099
D30100
D30101
100 words
D30199
D31500
100 words
D31599
1. The allocated DM words are not used by the PROFIBUS Master Unit. How-
ever, exchange of data to the allocated DM words is reserved for future
use, and it is therefore not recommended to use the allocated DM words
for other purposes.
2. The allocation scheme as shown above does not apply to the C200HW-
PRM21 PROFIBUS DP Master Unit. Word allocations for this Unit are list-
ed in section G-2 Word allocations.
PROFIBUS DP Master unit
Unit Number: 0
Local memory
Software switches
(I/O refresh) status
Local memory
No exchange
Reserved for future use
Section 4-1
25 words
100 words