PLC Programming

5 - Editors in CoDeSys
Depending on the selected position (see 'Cursor positions in FBD'), insertion takes place directly in
front of the selected input (Cursor Position 2), directly after the selected output (Cursor Position 4) or
at the end of the network (Cursor Position 6).
For an inserted assignment, a selection can be made accompanying the entered text "", and the
assignment can be replaced by the variable that is to be assigned. For this you can also use the Input
Assistant.
In order to insert an additional assignment to an existing assignment, use the 'Insert' 'Output'
command.
'Insert' 'Jump' in FBD
Symbol:
Shortcut: +
This command inserts a jump.
Depending on the selected position (see 'Cursor positions in FBD'), insertion takes place directly in
front of the selected input (Cursor Position 2), directly after the selected output (Cursor Position 4) or
at the end of the network (Cursor Position 6).
For an inserted jump, a selection can be made accompanying the entered text "", and the jump
can be replaced by the label to which it is to be assigned.
'Insert' 'Return' in FBD
Symbol:
Shortcut: +
This command inserts a RETURN instruction.
Depending on the selected position (see 'Cursor positions in FBD'), insertion takes place directly in
front of the selected input (Cursor Position 2),directly after the selected output (Cursor Position 4),
directly before the selected line cross (Cursor Position 5), or at the end of the network (Cursor
Position 6)
'Insert' 'Box' in FBD
Symbol:
Shortcut: +
With this command, operators, functions, function blocks and programs can be inserted. First of all, it
is always inserted an "AND" operator. This can be converted by Selection and Overwrite of the type
text („AND") into every other operator, into every function, into every function block and every
program. You can select the desired POU by using Input Assistant (). If the new selected block
has another minimum number of inputs, these will be attached. If the new block has a smaller highest
number of inputs, the last inputs will be deleted.
In functions and function blocks, the formal names of the in- and outputs are displayed.
In function blocks there exists an editable instance field above the box. If another function block that is
not known is called by changing the type text, an operator box with two inputs and the given type is
displayed. If the instance field is selected, Input Assistant can be obtained via with the
categories for variable selection.
The newest POU is inserted at the selected position:
• If an input is selected (Cursor Position 2), then the POU is inserted in front of this input. The first
input of this POU is linked to the branch on the left of the selected input. The output of the new
POU is linked to the selected input.
• If an output is selected (Cursor Position 4), then the POU is inserted after this output. The first
input of the POU is connected with the selected output. The output of the new POU is linked to the
branch with which the selected output was linked.
• If a POU, a function, or a function block is selected (Cursor Position 3), then the old element will be
replaced by the new POU.
CoDeSys V2.3 5-21