907 AC 1131 is a complete development environment for your PLC.
907 AC 1131 puts a simple approach to the powerful IEC language at the
disposal of the PLC programmer. Use of the editors and debugging functions is
based upon the proven development program environments of advanced
programming languages (such as Visual C++).
1.2 Overview of 907 AC 1131 Functions
How is a project structured?
A project is put into a file named after the project. The first POU (Program
Organization Unit) created in a new project will automatically be named
PLC_PRG. The process begins here (in compliance with the main function in a
C program), and other POUs can be accessed from the same point (programs,
function blocks and functions).
Once you have defined a Task Configuration, it is no longer necessary to create
a program named PLC_PRG. You will find more about this in the Task
Configuration chapter.
There are different kinds of objects in a project: POUs, data types, display
elements (visualizations) and resources. The Object Organizer contains a list of
all the objects in your project.