IBM DB2
This section contains information on the configuration and the data type mapping of IBM DB2 databases with ODBC.
Declaration in the TwinCAT Database Server Configurator
ODBC IBM DB2 database | |
|---|---|
Database Type | "Odbc_Database" |
ODBC Type | Select "IBM DB2" from the drop-down menu. |
Driver | Enter here the actually installed driver. |
Host name | Enter the name or IP address of your server. |
Database | Enter the name of the database. |
Port | Enter the port for communicating with the IBM DB2 database. Default: 50000. |
Protocol | Default: TCPIP |
Uid | Enter the user name here. |
Pwd | Enter here the corresponding password. |
LONGDATACOMPAT | Default: 1 |
Data type mapping between DB and PLC
E_ColumnTypes | IBM DB2 | TwinCAT PLC |
|---|---|---|
BigInt | BIGINT | T_ULARGE_INTEGER (TcUtilities.lib) |
Integer | INT | DINT |
SmallInt | SMALLINT | INT |
TinyInt | SMALLINT | INT |
Bit_ | VARCHAR(1) | STRING(1) |
Money | DECIMAL(18,4) | LREAL |
Float | DOUBLE PRECISION | LREAL |
Real_ | FLOAT | LREAL |
DateTime | TIMESTAMP | DT |
NText | LONG VARCHAR | STRING |
NChar | CHAR(254) | STRING |
Image | BLOB | ARRAY OF BYTE |
NVarChar | NVARCHAR(254) | STRING |
Binary | BLOB | ARRAY OF BYTE |
VarBinary | BLOB | ARRAY OF BYTE |
 | Data type support WSTRING is not supported by this database. (See WString support) |
| Functioning All functions of the TwinCAT Database Server can be applied to the ODBC templates. This does not apply to the "Free Connection String". |
Notice | |
Data security In flash memory devices the number of write access operations is limited. The flash memory devices can fail, with a risk of data loss.
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