TwinCAT Database Server

Many applications require backup of current variables from the PLC in databases. Conversely, recipe values often have to be loaded from a database during operation and processed directly in the PLC. The TwinCAT Database Server is used for logging PLC data in a database. Different database variants are available:

• SQL
• SQL Compact (previously “SQL Mobile”)
• Access
• ASCII
• ODBC
• Oracle
• DB2
• MySQL
• PostgreSQL
• Firebird
• Interbase

The TwinCAT Database Server enables:

• cyclical logging of PLC values,
• cyclical checking of PLC values and logging of modified values only, and
• logging of event-driven data from the PLC cycle via a function block.

Individual PLC variables and also structures can be exchanged with the database.

Configuration of the TwinCAT Database Server CE is based on an XML file. This configuration file describes the required databases, ADS devices (e.g. PLC run-time systems), and variables.

Ordering information
TwinCAT Database Server	licence for using the TwinCAT Database Server for logging of PLC data in a database
TwinCAT Database Server CE	licence for using the TwinCAT Database Server CE for logging of PLC data in a database for Windows CE platforms