Dialog ‘Select function block’¶

Function: The dialog is used for selecting a function block for I/O mapping. The function block should be mapped to the channel selected in the <device name> I/O Mapping tab or to the object selected in the <device name> IEC Objects tab.

Call:

Tab <device name> I/O Mapping, command button Add FB for I/O channel
Tab <device name> IEC Objects, command button Add

The dialog provides all function blocks from the active application and the libraries included in the project which fulfill the following:

The function block has the {attribute 'io_function_block'} attribute.
The function block contains input or output parameters that match the channel type (input, output, data type) and has the {attribute 'io_function_block_mapping'} attribute.

When a function block is selected that provides multiple matching parameters, only the first one is mapped automatically to the channel. The others can only be assigned manually in the <device name> I/O Mapping tab.

After the function block is assigned, the parameter of the function block instance is entered in the Variable column of the mapping table. Then the path is composed as follows:

<application name>.<device channel name>_<FB name>_<continuous FB instance number>. <FB parameter name>

Example: App1.Out_4_Int_myScale_Output_Int_1.iOutput for the parameter iOutput of the first inserted instance of the function block myScale_Output.

Find	Input field for searching for function block names
Type	Function blocks in the tree structure that match the channel type. Nodes: application, library name(s)
Documentation	Shows the available documentation for the library selected in the tree or the library block.