Omron CX-Programmer 9, Руководство по эксплуатации

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PART 1: CX-Programmer
OMRON CHAPTER 4 – Reference
CX-Programmer _Page 89
Symbol Filtering Targets
Target Symbol Table: Provides the symbols/addresses registered in the global symbol
table and the local symbol table for the current program.
Note: When a symbol with the same symbol name is registered
in both the local symbol table and global symbol table,
only the symbol registered in the local symbol table will
be displayed in the drop-down list.
Target Symbol (Data Type): The I/O Contact Dialog Box shows the contacts (i.e., BOOL
type symbols).
Target Data: Select Tools – Options , and select the target data for filtering
text strings from the following options in the Symbol filtering
field of the Diagrams Tab (the default is to filter (search) both
symbol names and I/O comments.)
• Name: Only symbol names are searched.
•
Comment: Only I/O comments are searched.
•
Both: Both symbol names and I/O comments are searched
(default).
Use the following procedure to edit contacts or coils in detailed dialog mode .
1, 2, 3…
1. Double-click on the required contact in the Ladder program. The Edit Contact dialog or
Edit Coil dialog is displayed.
2. Enter a name or address for the contact or coil. This can be typed in directly or selected
from the field. Select the Edit Symbol pushbutton to amend an existing symbol if
required.
To enter a symbol with an automatically allocated address, enter the name and leave the
address empty. To enter an unnamed symbol, enter an address and a comment.
3. The Differentiation status of the operand bit can be set to prevent it from being turned
ON for more than one cycle after the execution condition goes from ON to OFF (Down)
or OFF to ON (Up). Select the
Up option for OFF to ON or the Down option for ON to
OFF.
4. Select the Immediate Refresh option if the operand is to be updated as soon as the
instruction has been executed.
5. When adding a new symbol, select Global to add a symbol to the PLCs symbol table.
Select Link to the CX-Server file to share the symbol definition with other applications
(named, global symbols only).
6. Select the OK pushbutton to complete the operation. Select the Cancel pushbutton to
abort the operation.
Note: The Differentiation option and Immediate Refresh setting can also be set from the contact or
coil context sensitive menu by selecting the element in the Ladder program and clicking the
right-mouse button. A symbol is placed in the Ladder program to indicate that these options
have been set: ‘!’ for Immediate refresh, ‘^’ for Differentiate up; ‘v’ for Differentiate down.
Invert (NOT)
The Invert (NOT) setting allows the normal state of a contact or coil (open or closed) to be reversed. Select
Invert (NOT) from the context sensitive menu, whilst the contact or coil is selected.
Forced Bits
The state of an address can be ‘forced’ regardless of its physical state. This is useful when testing certain
conditions or rungs in the Ladder program. A bit can be forced on (value changed to 1) or forced off (value
changed to 0), the value of the bit can also be cleared. The following rules apply:
♦
Bit references that are read-only cannot be forced;
♦
Word references may not be forced.