Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 292)

Publication 1760-UM002B-EN-P - March 2005
5-24 Visualization with Pico GFX-70
Figure 5.25 External trigger
Screen 7 - Screen 7 shows a simple example of the display change using an
internal limit value comparison. The screen shows two numerical values that
show the output values (QV output) of the timing relay T08. The variable type
is DWord. The timing relay is run in a loop from 0 to 10 seconds.
A value range from 0 to 11000 is defined in the Number range/format tab.
The unit of measure is set to “s” (seconds). The scaling range is defined from 0
to 11 with 2 decimal places. The display change is active and is detected via the
internal limit value comparison. The numerical value display flashes for the left
numerical value and is inverted for the right numerical value.
Figure 5.27 Display change via internal limit value comparison
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 (refer to the circuit diagram in
PicoSoft Pro.) 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.
Display
change (I1)
external trigger
3.37s 3.37s
Table 5.26 Numerical value – analog value output with display change via internal limit value comparison
Left numerical value: The numerical value flashes in the range from 0 to 3 and from 7 to 10.
The upper limit value is set to 7 (the display change occurs from numerical value 7 to 10) in the
Display change tab and the lower limit value is set to 3 (the display change occurs from numerical
value 0 to 3).
There is therefore no display change between 3 and 7.
Right numerical value: The numerical value is inverted in the range from 0 to 3 and from 7 to 10.
The upper limit value is set to 7 (the display change occurs from numerical value 7 to 10) in the
Display change tab and the lower limit value is set to 3 (the display change occurs from numerical
value 0 to 3).
There is therefore no display change between 3 and 7.
No display change Display change
Display change
(without 3-7s)
internal trigger
6.57s 6.57s
Display change
(without 3-7s)
internal trigger
0.95 s 0.95 s
Display
Marker word1 (C1)
16