CJ1W-PNT21 Omron, CJ1W-PNT21 Datasheet - Page 77

• Manufacturer Part Number: CJ1W-PNT21
• Description: CJ Profinet Master
• Manufacturer: Omron

Specifications of CJ1W-PNT21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Overview of Word Allocations
5-1
5-1-1
64
Overview of Word Allocations
CIO Area Word Allocations
Note
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)
The allocated DM words are not used by the PROFINET IO Controller Unit. However,
exchange of data to the allocated DM words is reserved for future use, and it is there-
fore not recommended to use the allocated DM words for other purposes.
Software switches, PROFINET IO Controller Unit status, and Slave Status
data are allocated in the CIO Area according to the unit number, as shown
below. Software switches are bits used as commands from the PLC CPU to
the PROFINET IO Controller Unit to enable executing Unit functions.
/i
Unit
(decimal)
0 (0)
1 (1)
2 (2)
Unit #15
Unit #15
No.
Unit #0
Unit #1
Unit #0
Unit #1
Allocated words
CIO1500 to CIO1524
CIO1525 to CIO1549
CIO1550 to CIO1574
CIO 1500
CIO 1501
CIO 1524
CIO 1525
CIO 1526
CIO 1549
CIO 1875
CIO 1899
D30000
D30001
D30099
D30100
D30101
D30199
D31500
D31599
PLC CPU Unit
CPU Bus Unit CIO Area
CPU Bus Unit DM Area
Figure 5.1: Memory allocations overview
25 words
25 words
25 words
100 words
100 words
100 words
Reserved for future use
(I/O refresh) status
Unit
(decimal)
8 (8)
9 (9)
A (10)
Software switches
No exchange
No.
Allocated words
CIO1700 to CIO1724
CIO1725 to CIO1749
CIO1750 to CIO1774
PROFINET IO Controller Unit
Unit Number: 0
Local memory
Local memory
Section 5-1
25 words
100 words