ABB AC500 V2 Getting Started page 23

1.5.4.3 Main program PLC_PRG
In CODESYS menu select tab POUs, there is one call of a POU (program organization unit) i.e.
"PLC_PRG".
In your project the "PLC_PRG" will become a main program containing calls to other programs
(POUs) which you will create one by one.
The PLC_PRG POU has been defined by default in ST (Structured Text) editor. Keep this
setting because of good visibility of the instructions at a glance and good handling for trouble-
shooting.
1.5.4.4 Boolean logic "NOT"
1.5.4.4.1 Application example "driller"
Recognizing of a driller by a photo sensor. "TRUE" input signal from sensor indicates that a
driller is broken. If driller has been found correct, then start drilling.
2023/03/03
Example project for central I/O expansion > Programming and compiling
3ADR010649, 3, en_US
Getting started with example projects
23