6. Function blocks
6.3 UF - User function block
Programming view
Fig. 282: 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 128, as well as the comment entered for the corresponding num-
ber. 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.
6.3.6.1 User function blocks in an ST main program
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 func-
tion 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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