2 what is a function block, What is a function block, 2introduction – Lenze E94A User Manual
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Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
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2
Introduction
2.2
What is a function block?
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2.2
What is a function block?
A function block (FB) can be compared with an integrated circuit that contains a specific control lo-
gic and delivers one or several values when being executed.
• Function blocks are classified in function libraries according to their functions.
• An instance (reproduction, copy) of the function block is always inserted into the interconnec-
tion.
• It is also possible to insert several instances of a function block into an interconnection.
• Each instance has an unequivocal identifier (the instance name) and an order index which defi-
nes the position at which the function block is calculated during runtime.
[2-1]
Information on a function block in the function block editor
As of »Engineer« V2.9
icons are displayed for simple functions blocks which symbolise their basic
functions to ensure a better readability of the interconnection.
[2-2]
Display of symbolic icons for simple function blocks
Tip!
An overview of all available function blocks is provided in the chapter "
".
A detailed description for each function block is provided in the chapter "
".
Name of the instance of the function block (freely selectable)
Order index (is simultaneously the button for changing the order index)
Button for opening the online help for the function block
Button for displaying/changing the function block properties
Other instance of the function block