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Structures
For a structure variable, the members are located in memory in the order that they are declared. Each
member is located at an integer multiple of the alignment of the data type of the member. Therefore,
there can be unused memory between members or at the end of members. The alignment of a struc-
ture is the largest alignment of all of the members. The amount of memory that is allocated is the inte-
gral multiple of the alignment that is larger than the total amount of memory that is allocated when the
members are arranged in order at integral multiples of the alignment of the data types of the members.
Example: The alignments and the amounts of memory that are allocated for the four variable declara-
tions given in the following figure are given in the following table.
Variable
Alignment [bytes]
Amount of memory that is allocated
[bytes]
A
4
8
B
4
8
C
4
16
D
4
16
Appendices
A-52
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
Содержание Sysmac NX1P2-10 1 Series
Страница 8: ...Manual Structure 6 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 34: ...Revision History 32 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 174: ...6 Testing Communications 6 4 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 354: ...8 CIP Message Communications 8 92 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 388: ...9 Socket Service 9 34 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 394: ...10 Modbus TCP Master Function 10 6 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 430: ...12 FTP Client 12 14 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 569: ...I Index I 1 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506 I...
Страница 576: ...Index I 8 NJ NX series CPU Unit Built in EtherNet IP Port User s Manual W506...
Страница 577: ......