Editing An Fbd/Ld Program For Process Control - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

2.4

Editing an FBD/LD Program for Process Control

Drag and drop a tag FB onto the FBD/LD editor and edit a program.
Operating procedure
(2)
• Instances can be specified after dragging and dropping a tag FB from the navigation window or the element
selection window onto the FBD/LD editor.
• For labels used in an FBD/LD program for process control, specify VAR_RETAIN, VAR_OUTPUT_RETAIN,
or VAR_PUBLIC_RETAIN label class to hold the data at power-off or reset of the CPU module.
• Setting for using process control function blocks (process control extension) can also be enabled on the
"Properties" window of program files.
• The execution cycle and the phase can be set on the "Properties" window of program blocks. ( Page 24
Timer execution)
2 PROCEDURE BEFORE USING PROCESS CONTROL FUNCTION BLOCK
34
2.4 Editing an FBD/LD Program for Process Control
(1)
1.
Select an instance of the declared tag FB on
the element selection window and drag and
drop it (1) to any place on the FBD/LD editor.
2.
The setting dialog to use the process control
function block (2) is displayed. Click the [Yes]
button so that the process control function
block can be used.
3.
Arrange program elements on the input/output
variables of the tag FB placed on the editor.