HNC-8 Numerical Control System Software. Maual of PLC Programming (V1.24)

HNC-8-PLC Programming specification

7. Operation monitoring and online modification of ladder diagram

¾ After inserting,

Add Line

The functional button of “Insert line” is in contrast to “add line” where the line is

added below the cursor line, as shown in the figure below, press the functional

button of Add line, then a new line is added below the cursor line.

¾ Before adding

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8 . PLC Development environment description

Overview

HNC-LADDER-WIN Numerical Ladder Diagram Programming Software is a

latest software of PLC program development environment for Series 8 NC

system. This software runs on Windows XP operating system, and can easily set

up ladder diagrams by visual graph programming. It is compatible with various

of PLS languages that are compliant to IEC61131-3 international standard, and is

a simple, efficient, and reliable PLC development tool.

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8 . PLC Development environment description

Installation of Development Environment

Using the example of installing from CD on Chinese Windows XP, this section

explains how to install the ladder diagram development environment.

(1) Boot into Chinese WindowsXP.

(2) Place the disk of ladder diagram development environment in the CD-ROM

drive.

(3) Double click Setup.exe file under the directory of Huazhong NC ladder

diagram, the installation program may run automatically, and then the

installation wizard appears.

(4) The greeting window appears after the installation wizard interface.

(5) Click “Next (N)”, and the selection dialog displays on the screen.

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8 . PLC Development environment description

Development Environment Interface

Development Environment of ladder diagram is divided into four parts: menu,

ladder diagram, statement list, and symbol table.

The bar at the top of the development environment is called menu, where every

pulldown menus of ladder diagram interface are listed. Clicking a menu item

shows the command options in the pulldown menu. Click a command to handle

relevant operation.

There are six items in the development environment menu: file, view, tool,

window, and help, which are discussed in the following:

File

The “File” menu contains the command items working on files, which mainly

provide operations on files of ladder diagram with user.

New

This item is for creating a new project.

Open

This item is to open an existing dft file.

Save

This item is for saving files of current window as dft files.

Save as

The function of this item likes “save ladder diagram” item,

which is to save open files, and the difference is that this

item is to save the open files with new names.

This item is for closing current ladder diagram interface.

Load dit file

This item is for opening existing dit files.

This item is for printing current window contents.

Print preview

This item is for previewing print effect.

Print setup

Parameter This item is to set printing parameters.

Exit

When you select this item, the program exits.

Edit

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8 . PLC Development environment description

The “Edit” menu contains rapid operations of copy, paste and the like, of which

the purpose is to improve the efficiency of writing the ladder diagram.

Cut

Cut string and element.

Copy

Copy string and element

Paste

Paste string and element

Insert row

Insert a row at the current cursor location

Delete row

Delete the row which the current cursor locates.

View

“View” menu is to control the subwindow displaying in the main window.

Ladder

To open (close) ladder diagram view.

diagram

Statement list

To open (close) statement list view.

Symbol list

To open (close) symbol list view.

Primitive tree

To open (close) primitive tree view on the left.

Message box

To open (close) message box at the bottom.

Toolbar

To open (close) toolbar.

Status bar

To open (close) status bar.

Tool

The function of “Tool” menu is to find/replace.

To search the specified string.

Search next

To continue to search the specified string.

Replace

To replace the specified string.

Window

“Window” menu is used to open each window.

Overlap

To arrange subwindows in overlap.

Tile

To arrange subwindows in tiling.

REG

To display symbol list window.

STL

To display statement list window.

LADDER

To display ladder diagram window.

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8 . PLC Development environment description

Ladder Diagram Interface

Four parts including toolbar, primitive tree, edit window, and message box are in

the ladder diagram window.

Toolbar and primitive tree can dock freely, that means, they can be put on any of

the four side walls of the main window. Toolbar can be located anywhere on the

desktop.

Toolbar

There are two toolbars including action bar and component bar, in the ladder

diagram interface.

(1) Action bar is used to manipulate new files quickly, such as zooming, undo,

redo, and so on.

(2) Component bar is used to fast add the basic input/output cell and the

selection function module.

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8 . PLC Development environment description

Primitive Tree

Primitive tree is used for selection function module. Double-clicking the icon

can expand and collapse the instruction tree. Select the instruction icon needed

from the instruction tree.

Edit Window

Edit

Edit window is for displaying and editing the ladder diagram. The area between

the left busbar and the right busbar is the editing domain of the ladder diagram,

the row number you are currently editing displays on the left of the left busbar,

and the comments to the meaning of output status for the current line displays on

the right of the right busbar.

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8 . PLC Development environment description

Message Box

While the ladder diagram is being compiling, the statement error and syntax

error which can be recognized, may appear in the message box.

Statement List Interface

Toolbar and edit window are in the statement list interface.

Toolbar

An action tool is in the statement list interface.

Edit Window

Edit window is for displaying and editing statement list, and can judge the

current row when the statement list is being editing.

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8 . PLC Development environment description

Symbol List Interface

Symbol names and comments of relevant addresses can be defined in symbol list

interface.

Selection box for register is on the left of edit window of the symbol list, and

edit box for register is on the right.

The edit box for register includes number, address, symbol name and comments.

Number: automatically generate the number of the current symbol name in

all the symbol names.

Address: the specified address.

Symbol name: the symbol name corresponding to the specified address.

Comments: the comments corresponding to the specified address.

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8 . PLC Development environment description

Development Environment Operation

Before editing PLC, first define the symbol name for the address to be used, and

annotate the address, then edit PLC in the way of ladder diagram or statement

list.

Symbol List Operation

Symbol list is used to define the symbol name for the specified address, and

annotate the address.

Add Symbol List

Here in X10.0 (the positive limt direction of X axis) as an example to introduce.

X10.0 is in X register. Select X register in the selection box of register. X10.0 is

in X000-X0049.

All the register bits and points from X0000 and X0049 may appear in the edit

box of register.

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8 . PLC Development environment description

Click “Symbol name” item at the X10.0 row three times, then the edit

box pops up.

Type “positive X limit”, and hit Enter button.

After typing the symbol name, annotate the address. The edit box will

pop up, with the three-click on the “comments” item at the X10.0

row.

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8 . PLC Development environment description

Type “positive X limit, active high” in the edit box, and hit Enter button.

Then defining the symbol name of X10, and annotating X10.0 are

complete.

Delete Symbol List

When the symbol name and comments of X10.0 are not needed, delete them.

Select “X10.0” in the column of address, and hit Delete button, to delete X10.0

from the list.

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8 . PLC Development environment description

Ladder Diagram Operation

The ladder diagram is composed of rows which themselves have up to 10 cells.

插入元件 Inserting Component

Inserting components can be separated into two types: inserting basic

components and inserting functional components.

¾ Inserting basic components

(1) When you want to insert basic component, first select a position on the

ladder diagram.

(2) Click the basic component to be inserted on the toolbar.

(3) Then the component is inserted in the ladder diagram.

¾ Inserting functional components

(1) Select the functional components needed from the primitive tree.

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8 . PLC Development environment description

Or select it from the selection box of component on the toolbar.

Component

library

(2) Double-left click the ladder diagram, then the functional component is

inserted.

Deleting Component

Select the component to be deleted in the ladder diagram, and hit Delete button

to delete it.

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8 . PLC Development environment description

Deleting Multi-row

Select the rows needed to be deleted. (Drag the mouse to select the area to be

deleted)

Hit Delete button to delete the selected area.

Cutting, Copying and Pasting Component

First select a component in the ladder diagram.

Then choose “Cut” or “Copy” in the “Edit” menu. Or right-click the component

to be cut or copied, and select “Cut” or “Copy”.

¾ The first way

¾ The second way

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8 . PLC Development environment description

At last, paste the component on other locations.

Cutting, Copying and Pasting Multi-row

The first step: drag the mouse to select the rows to be cutted or copied.

The second step: click

“Cut” or

“Paste” in the menu. Or right-click the

component to be cut or copied, and click “Cut” or “Paste”.

The third step: select somewhere on the ladder diagram.

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8 . PLC Development environment description

Undo

Using this button in the toolbar to undo the previous operations

Redo

Select this button on the toolbar to recover the undone operations.

Conversion

Using this button to convert the current ladder diagram to the corresponding

statement list. If there are errors in the ladder diagram, the message box

showing error information will pop up.

Output

Using this button to convert the current ladder diagram to the corresponding

statement list, and output the plc.dit file (execution file of ladder diagram). If

there are errors in the ladder diagram, the message box showing error

information will pop up.

Statement List Operation

Edit

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8 . PLC Development environment description

In the statement list, type characters directly to edit the statement list.

After a line of statement has been typed and the cursor is moved away, the

system will check and arrange the line.

If there are errors in this line, the statement list will annotate the errors.

Cut, Copy and Paste

Use the mouse to drag on the statement list, to select some statements.

Then use Cut, Copy and Paste in the menu, to work accordingly.

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Conversion

Select this button on the toolbar, to convert the current statement list to the

corresponding ladder diagram.

Output

Hit this button on the toolbar to convert the current ladder diagram to the

corresponding statement list, and output the plc.dit file (execution file of ladder

diagram).

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HNC-8 Numerical Control System Software. Maual of PLC Programming (V1.24) - page 10