Instruction Tree

View the Instruction Tree:

·Use the View > Instruction Tree menu command to toggle the tree between ON (visible) and OFF (hidden).

The Project Branch Organizes Your Project

·Click the right mouse button on the Program Block folder to insert new subroutines and interrupt routines.

·Open the Program Block folder and click the right mouse button on a POU icon to open the POU, delete it, add comments, edit its property sheet, or rename subroutines and interrupt routines..

·Click the right mouse button on a Status Chart or Symbol Table folder to insert new charts or tables.

·Open the Status Chart or Symbol Table folder and click the right mouse button on a chart or table icon to open it, rename it, or delete it.

The Instructions Branch Helps You Create a Program

Once you click open an instruction folder and select an instruction, you can:

·Drag and drop or double-click to insert instructions into a program (LAD and FBD only; not STL).

·Right-click over an instruction and choose Help from the pop-up menu for information about that instruction.

If you have specified a PLC type for your project, the Instruction Tree shows any instructions that are not valid for your PLC with a red x:

Expand or Collapse the Instruction Tree

Open a folder by single-clicking on a branch expansion icon or double-clicking on the folder icon.

Then double-click on an object icon within a folder to select the object.

To Resize the Tree Window

Move the cursor over the right edge, then click and drag the splitter cursor.


The Instruction Tree Works for SIMATIC or IEC 1131-3 Programming

·Fewer instructions are available in the IEC 1131-3 set. Some instructions that are normally included in the SIMATIC set are simply not standard instructions in the IEC 1131-3 specification. (Instructions comparable to the SIMATIC instructions are provided as a non-standard extension of the IEC 1131-1 set.)

·A red diamond by each SIMATIC style instruction identifies an extension to the standard IEC 1131-3 instruction set.


See Also:

Keyword List

Application User Reference

Getting Started Contents