→Function
according to →IEC-standard: language element which, when executed, typically yields one data element result and possibly additional →output variables
A function is a →program organization unit (such as a →program and a →function block) that does not store its states; i.e. inputs, internals and outputs/results.Functions can be declared using the following elements:
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→data types (elementary data types and user-defined data types)
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system functions (such as Bitstring functions)
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previously declared functions
Neuron Power Engineer supports declaration/usage of functions in these languages (according to IEC-standard):
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language |
details under |
|---|---|
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"Declaration of a function in ST" and "Call of function in ST" |
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"Creating POU in FBD" and "Calls of blocks: functions or function blocks" |
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"Creating POU in LD" and "Functions and function blocks in LD" |
Moreover, it is possible to create functions in →C or →C++ and to use them in ST. See "Integrating C-code and/or C++-code into the application (deprecated)".