4-1
Section
Allocated Words
42
4-1
Allocated Words
The Ethernet Unit is allocated words in the the following three areas for reading
settings and status.
•
System Setup for CPU Bus Units
Stores initial setup for the Ethernet node.
•
Allocated Words in the CIO Area
Stores software switches and status information for functions.
•
Allocated Words in the DM Area
Stores software switch and status information for functions.
CPU Unit
Ethernet Unit
CPU Bus Unit System Setup
(Set using CX-Programmer.)
Transferred
when power
supply is turned
ON or Unit is
restarted.
I/O refresh
I/O refresh
Allocated Words in CIO Area for
CPU Bus Units
n = CIO 1500 + 25 x unit number
Allocated Words in DM Area for
CPU Bus Units
n = 100 x unit number
15
0
15
15
0
0
n
n + 1
n + 24
m
m + 1
m + 99
15
0
The words in the CIO Area and DM Area are allocated according to the unit num-
ber as shown in the following tables. The 25 words are allocated per Unit in the
CIO Area and 100 word are allocated per Unit in the DM Area.
