User guide

48251-EN.fm/4
Schneider Electric
With the IEC 1131-3 sequential function chart (SFC) language, you can define a series
of SFC objects that comprise a control sequence. Steps, transitions and jumps in the
sequence can be commented. You can place text freely within graphics. You can
assign any number of actions to every step. A series of monitoring functions–e.g.,
maximum and minimum monitoring time–can be integrated into each step's
characteristics. The actions can be assiged an attribute symbol (as required by IEC)
to control the action's performance after it has been activated–e.g., a variable can be
set to remain active after exiting.
With the IEC 1131-3 IL language, you can call entire functions and function blocks
conditionally or unconditionally, execute assignments and make conditional and
unconditional jumps within a program segment.
IL is a text-based language, and standard Windows word processing tools can be
used to generate code. The IL editor also provides several word processing
commands. Keywords, separators and comments are spell-checked automatically as
they are entered. Errors are highlighted in color.
For custom function blocks (DFBs), the Concept-DFB editor is used. In this editor, you
can create your own function blocks from EFBs or existing DFBs. DFBs created in the
IL editor can be recalled in the ST, LD and FBD editors, and DFBs created in the ST,
LD and FBD editors can be used in the IL editor.
With the IEC 1131-3 ST language, you can call function blocks, exectute functions
and assignments and conditionally execute and repeat instructions. The ST
programming environment is similar to Pascal. It is a text-based language, and
Windows word processing functions can be used to enter code. The ST editor itself
also provides several word processing commands. Keywords, separators, and
comments are spell-checked automatically as they are entered. Errors are
highlighted in color.
Custom function blocks (DFBs) created with the ST editor can be called in the IL, LD
and FBD editors; DFBs created in the IL, LD and FBD editors can be used in the ST
editor.
Sequential function chart (SFC)
Instruction list (IL)
Structured text (ST)
Momentum automation platform 0
Programming software
Concept
Languages
References :
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