A-5-2 Important Case Examples; Important Case Examples - Omron Sysmac NJ-series User Manual

Appendices
A-5-2

Important Case Examples

When you exchange structure variable data between an NJ/NX-series CPU Unit and a remote device,
you must align the memory configuration of the structure variable members with those of the remote
device. This section describes what to do in either the NJ/NX-series CPU Unit or in the remote device.
Additional Information
This is not necessary when you exchange data between NJ/NX-series CPU Units.
Aligning the Memory Configuration with a Remote Device
There are two methods that you can use to align the memory configuration with a remote device.
For example, the differences in the memory configuration for structure variables between an NJ/NX-
series CPU Unit and a CJ-series CPU Unit are shown below.
This section describes how to align the memory configuration for these Units.
Data Type Definitions
Name Data type
Structure Y STRUCT
a DINT
b INT
c DINT
Variable Table
Name Data type
Variable NJ_X Structure Y
A-60
NJ/NX-series Structure Variable NJ_X
Bytes
First byte a
First byte + 4 b
First byte + 6 Not used.
First byte + 8 c
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
Data Type Definitions
Name Data type
Structure Y STRUCT
a DINT
b INT
c DINT
Variable Table
Name Data type
Variable CJ_X Structure Y
CJ-series Structure Variable CJ_X
Bytes
a
First byte
b
First byte + 4
c
First byte + 6