One problem of traditional engineering systems is guaranteeing consistent data management. Every engineering tool only guarantees data consistency within its own system. Even if an attempt is made to standardize the interfaces, the configuring engineer is mainly responsible for the availability and consistency of the data, with all of the accompanying disadvantages such as additional work expenditure and increased susceptibility to errors.
The TIA Portal is based on shared data management: Any changes to application data which are made at any point in a project are automatically and immediately repeated at all of the other points of use.The various editors of the TIA Portal do not have to be opened for this.
The tag table is a common editor for global variables and constants. Large quantities of variables can be quickly generated using mechanisms familiar from Microsoft Excel. In the same way, many addresses can also be rewired simultaneously.
Project data usually has to be reused at different locations of a project and linked together across different editors. Intelligent Drag & Drop automatically generates these links for users. By means of central, consistent data management with a shared database for all editors, all changes to the application data are immediately and automatically updated within th eentire project.
The user can, of course, create the symbols in the customary way in the symbol table. In addition, STEP 7 V11 offers new, efficient methods of generating the symbols. Using the simple Drag & Drop function between the user program and the device view, the user can define the assignment of hardware to symbols. These symbols are automatically created in the symbol table. This saves the laborious searching for errors due to typing mistakes when filling the symbol table.
The automatic data consistency ensures that all locations at which a symbol is used are updated immediately, regardless of which editor was used to change a symbol. This one-time data input and the automatic data consistency save the user a lot of time.