General Structure Of The Function Blocks - Siemens Simatic Ident Function Manual

Setting parameters for blocks

3.3 General structure of the function blocks

The library is now linked in and the required blocks and data types have been created in
your project. The "IID_HW_CONNECT" data type has also been created and addressed.
You can now start programming the blocks.
Note
Configure "IID_CMD_STRUCT"
If you work with the Ident profile or with the "AdvancedCmd" block, you also need to create a
further element with the data type "IID_CMD_STRUCT" (Array [1...n]) in the data block you
have already created.
3.3 General structure of the function blocks
Structure of the blocks based on the sample block "FB"
The following graphic shows an example of a block with input and output parameters as they
exist in the same way in all blocks.
①
②
Figure 3-3
20
Input parameters
Output parameters
Data type: Bit
Data type: Byte, Word, DWORD, INT
Example of a block
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04