User Function Blocks In An St Main Program - Eaton easyE4 series Manual

6. Function blocks
6.3 UF - User function block

6.3.5.1 User function blocks in an ST main program

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Programming view
Figure 211: Analog coil tab
If there are any user function blocks with bit and/or analog inputs available, you will be
able to select the "User function block inputs" option in the "Type" drop-down menu.
Meanwhile, the "Operand" drop-down menu will contain all registered user function
blocks that have bit and/or analog inputs.
The "Number" drop-down menu will contain all available function block numbers within
a range of 1 to 127, as well as the comment entered for the corresponding number.
Please note that any instance numbers that have already been assigned to other types
of user function blocks will not be available for selection.
Finally, the "Function block inputs" drop-down menu will list the various individual
inputs, together with information specifying whether the coil is connected internally.
In addition, you will be able to select the coil function (Contactor, Set, Reset, etc.) for
digital inputs.
A user function block created with the FBD language can also be called in an ST main
program and vice versa.
In this case, a template based on the user function block's parameters (as defined in
the Interface section) will be generated in the ST program if the function block is
dragged onto the program. You will be able to connect the inputs and outputs the same
way as with manufacturer function blocks.
The NAME and VERSION you entered originally will be used to define the user function
block's type and version. These two pseudo inputs cannot remain unconnected and are
not allowed to be mapped outside of the function block call.
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