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Visualization with EZD
MN05013005E
310
Screen 8:
Screen 8 shows an example of outputting a marker word. The
numerical value in the screen is associated with marker word
MW01. The variable type is Word.
A value range from 0 to 999 is defined in the Number range/
format tab. The timing relay T09 switches the counter C01
(
J
circuit diagram in EZSoft) every two seconds. The output
QV of the counter function block writes the data to marker
word MW01 (defined in the Parameters tab in the Function
block output area). If the upper switch value SH (38) is
reached, the counter resets itself.
Screen 9:
Screen 9 shows an example of how to display a value
overflow. The associated variable is the QV output of timing
relay T04. The variable type is DWord. The timing relay runs
from 0 to 4000 ms. A value range from 0 to 3000 and “ms” as
unit of measure are defined in the Number range/format tab.
This causes a value overflow as soon as 3000 ms is
exceeded. This is indicated in the display by an overflow
signal.
Screen 10:
Screen 10 shows an example of how to display a value
underflow. The associated variable is the QV output of
counter C02. The variable type is DWord. The counter C02 is
triggered by a flashing pulse from timing relay T07. The
counter counts down from 12 to 0. A value range from 6 to 12
and “mm” as unit of measure are defined in the Number range/
format tab. This causes a value underflow as soon as 6 mm is
undershot. This is indicated in the display by an underflow
signal.
Display
Marker word1 (C1)
16
J
In EZSoft the contents of the marker can be viewed both in
decimal and hexadecimal format. Only decimal format,
however, is shown in the display!
Overflow signal
Timer 4
---ms
Underflow
signal
Counter 2
-mm