PART 1: CX-Programmer
CHAPTER 4 – Reference
OMRON
CX-Programmer _Page 62
2. Enter a name or address for the contact or coil. This can be typed in directly or selected
from the field.
Note:
Check the
Show with comment dialog
option in the
Diagram
tab of the
Options
dialogue to display a comment dialogue. The dialogue is displayed after the OK
pushbutton is selected on the
Contact
or
Coil
dialogue.
3. Select
the
OK
pushbutton to complete the operation. Select the
Cancel
pushbutton to
abort the operation.
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 dialogue
or Edit Coil dialogue 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.
Forcing is only allowed when the PLC is in Debug or Monitor mode (not Run mode).
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