Creating A Structure Data Type; Overview; Specifications Of Structure Data Type For Db Access - Omron NX701-1620 User Manual

3-2 Creating a Structure Data Type

To access a DB, you need to create a user-defined structure data type according to the table
definition of the DB.
This section describes the specifications and creation procedure of the structure data type.
3-2-1

Overview

You create a user-defined structure data type on Sysmac Studio based on the data type of the
table to access. Register all or some of the columns of the table as structure members.
Each structure member name and data type must match the corresponding column name and
data type of the table.
Data type definition on
Sysmac Studio
Structure data type for DB access
(for each SQL)
When creating a variable called "DB Map Variable", you specify the structure as its data type.
3-2-2

Specifications of Structure Data Type for DB Access

Item
Structure name
Offset specification for
structure members
Structure members
Structure member name
Structure member's data type
NJ/NX-series Database Connection CPU Units User's Manual (W527)
3 Programming the DB Connection Function
Same structure
DB Connection Instruction
abc MapVar
NJ/NX-series CPU Unit
You can specify any name for the structures.
For all NJ/NX-series Controllers, specify NJ for Offset Type.
Register all or some of the columns of the table as members.
Define the same name as the corresponding column of the table. The names are
case sensitive.
Define a data type that matches the data type of the corresponding column of the
table.
Refer to Correspondence of Data Types between NJ/NX-series Controllers and
DB for details. However, you cannot specify the following data types and attribute
for structure members.
- Derivative data types
- Array attribute
Table definition of the DB
DB
Specifications
3
3-3