Lenze PLC Designer PLC Designer (R2-x) - Manual (Page 312)

L-force | PLC Designer
Editors in PLC Designer
310 DMS 3.2 EN 02/2011 TD29

If a POU has been created once already with EN input, then this POU can be used to
create a network. This means that data from usual operators, functions, and function
blocks can flow in an EN POU and an EN POU can carry data to such usual POUs.
If, therefore, you want to program a network in the LD editor, as in FBD, you only need
first to insert an EN operator in a new network. Subsequently, from this POU, you can
continue to construct from your network, as in the FBD editor. A network thus formed
will perform like the corresponding network in FBD.
'Insert' 'Box with EN in LD'
Symbol:
Use this command to insert a function block, an operator, a function or a program
with EN input into a LD network.
The marked position must be the connection between the contacts and the coils
(Cursor Position 4) or a coil (Cursor Position 3). The new POU is inserted in parallel to
the coils and underneath them; it contains initially the designation "AND". If you wish,
you can change this designation to another one. For this you can also use the Input
Assistant.
'Insert' 'Insert at Blocks in LD
With this command you can insert additional elements into a POU that has already
been inserted (also a POU with EN input). The commands below this menu item can
be executed at the same cursor positions as the corresponding commands in the
Function Block Diagram.
With Input you can add a new input to the POU.
With Output you can add a new output to the POU.
With POU, you insert a new POU. The procedure is similar to that described under
'Insert' 'POU'.
With Assign you can insert an assignment to a variable. At first, this is shown by three
question marks „???", which you edit and replace with the desired variable. Input
assistance is available for this purpose.
'Insert' 'Rising edge detection' in LD
Symbol:
This commands inserts a R_TRIG function block, which serves to detect a rising edge
(FALSE -> TRUE) at the incoming signal. The same is true as for command 'Insert'
'Function Block' which can be used to insert any available function block.