plc软件用法

The project workspace window shows the objects inside a CX-Programmer project as a hierarchical tree.
It is possible to add multiple PLCs to a single project. Each PLC on the tree CAN have the following objects attached to it (depending on the PLC type):

q    Symbols - The PLC抯 global symbol table.
q    IO Table - The PLC抯 I/O table, which contains a map of racks and units to be attached to the PLC in order for the PLC program/s to work properly.
q    PLC Settings - The PLC抯 setup - all settings which are stored within the PLC.
q    Memory Card - The memory card / file device attached to the PLC (available only when online)

q    Error Log - The PLC抯 error log (available only when online).
q    Expansion Instructions- The PLC抯 expansion instruction table (only for certain PLC types).
q    Memory (Data Monitor) - The PLC抯 memory.

The tree structure is similar to the Windows Explorer system and CAN be expanded (click on +) or contracted (click on -) in the same way.

When you have selected the PLC in the tree and opened its branch (e.g. NewPLC1 shown below) the following information is displayed in the Project Workspace.

GLOBAL & LOCAL SYMBOLS: You will notice that there are two Symbol objects that you CAN select. The PLC Symbols are the global symbols available to all PLC programs for the particular PLC.There is also a set of symbols for each program, which are called local symbols. Other programs CANnot access local symbols.You CAN create your own local or global symbols A PLC program consists of one or more sections.
The C series PLCs only have one program per PLC.
The CV and CS series of PLCs allow multiple programs per PLC. The CS series has true multitasking capability. Each program is shown separately on the tree. The icon to the left of the program name shows the task type of the program (e.g. an interrupt task , or a cyclic task ). Each program must have a different assigned task.
To select a task, select and highlight the required program and either:

q    Select the Properties option from the View menu OR
q    Right-click your mouse while the cursor is on the program task icon and select the Properties option from the drop-down menu.

The Program Properties dialog is displayed.

Select on the following task types from the Task drop-down list:

Task Type     Task Type icon
Main (C) or Cyclic (CS1)    
Interrupt    
Schedule    
Power Off (C)  or Power Failure (CS1)    
Power On    
Opening Existing Projects

In the File menu you CAN select either the Open option then select the required project file or select the last worked file name above the Exit option.
When the project is opened, CX-Programmer restores the views which were active when the project was last open.

Hint:     If a suitable window does not appear, select View, Project Workspace then expand the Project folders and select the required PLC program to display a ladder diagram.

Adding/Inserting a New PLC

Either right-click on the New Project icon or Insert Menu option and select Insert PLC.

The PLC Add Dialog is displayed.

Enter the details as described in the PLC Change Dialog help.

甈roperty of Omron Corporation 1999-2000

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