KEYENCE KV Series - Manual (Page 152)

Chapter 3 Simulator
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3.5.6 Manipulating timing charts
This section describes timing charts displayed in the registration monitor.
When steps are executed, timing charts are displayed in real-time to indicate the
value history. You can confirm the operation status of a program such as the timing
at which the ON/OFF status of the contact of each registered device is changed
over, etc.
When a step is executed in the reverse direction after a step has been continuously
executed, symmetry timing charts are displayed.
However, when steps are executed at high speed, the progress for each individual
step is not displayed and each timing chart is progressed by only one scale. Accord-
ingly, timing charts displayed are not symmetrical even if a step is executed in the
reverse direction.
■ How to interpret a timing chart
Timing charts for all the registered devices are displayed on the screen. For con-
tacts, the ON/OFF status can be determined by the shape. For word devices, the
ON/OFF status can be determined by a change in the value.
The time axis of a timing chart proceeds from the right to the left. The further right on
the chart, the closer to the current time.
The cursor on a timing chart indicates the part currently being simulated. The cursor
position can be moved.
The scale for a timing chart is different depending on whether scans or steps are
being executed. [This difference is provided only in the simulator. It is not provided in
the monitor.] One scale in the monitor indicates the timing inside the monitor, and
has nothing to do with the PLC scan.)
While scans are executed: One scale indicates one scan.
While steps are executed: One scale indicates one instruction.
When the execution method is changed over, the timing chart color changes.
■ Moving the vertical cursor
The vertical cursor is displayed when a scale is clicked. The vertical cursor can be
moved using either of the following two procedures.
• While pressing and holding the left mouse button on the cursor pointer, move it to
the movement destination, and then release the left button.
• Press the Esc key to change the cursor on a device to blue, and then move the
cursor using the LEFT and RIGHT keys.
• The active status of the vertical cursor can be changed by pressing the Tab key.
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