Method 2: Changing the Memory Configuration of the Structure Variable in
the Remote Device
You can insert a member into the structure variable of the remote device to change it to match the
memory configuration of the structure variable in the NJ/NX-series CPU Unit.
Both the memory configuration and the data types must be the same between the two structure
variables. Y
ou therefore need to create the same members in both the remote device and the
NJ/NX-series CPU Unit.
Example: The following example shows how the memory configuration of the structure variable in
the CJ-series CPU Unit is changed to match the memory configuration of the structure variable in
the NJ/NX-series CPU Unit.
a
b
b2
c
a
b
b2
c
a
b
c
Data Type Definitions
Name
Structure
Y
a
b
b2
c
Data type
STRUCT
DINT
INT
INT
DINT
Bytes
CJ-series Structure Variable
CJ_X
First byte
First byte + 4
First byte + 6
First byte + 8
Variable Table
Name
Variable
CJ_X
Data type
Structure Y
Data Type Definitions
Name
Structure
Y
a
b
b2
c
Data type
STRUCT
DINT
INT
INT
DINT
Bytes
NJ/NX-series Structure Variable
NJ_X
First byte
First byte + 4
First byte + 6
First byte + 8
Variable Table
Name
Variable
NJ_X
Data type
Structure Y
Data Type Definitions
Name
Structure
Y
a
b
c
Data type
STRUCT
DINT
INT
DINT
Bytes
CJ-series Structure Variable
CJ_X
First byte
First byte + 4
First byte + 6
Variable Table
Name
Variable CJ_X
Data type
Structure
Y
Data Type Definitions
Name
Structure
Y
a
b
c
Data type
STRUCT
DINT
INT
DINT
Bytes
a
b
Not used.
c
NJ/NX-series Structure Variable
NJ_X
First byte
First byte + 4
First byte + 6
First byte + 8
Variable Table
Name
Variable NJ_X
Data type
Structure Y
(2) Add the dummy variable b2 that you created in the
CJ-series CPU Unit to the NJ/NX-series CPU Unit as well.
(1)
Add a dummy member variable
b2 that matches the
unused memory location on the NJ/NX-series CPU Unit.
Make the following changes to align the memory
configurations in the NJ/NX-series and CJ-series CPU Units.
Appendices
A-58
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
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