structure which will disable and gray-out the front panel slider when it is
not selected as the control.
These two icons are where the
set temperature and the current or
actual temperature are published or
This box sends the set temperature
and the current or actual temperature to
the chart on the
This box is
where the currently selected mode is
published or transmitted wirelessly:
when true, the string “COOL” is
transmitted; when false, the string
“HEAT” is transmitted. The triangle
between them with the “?,” “T,” and
“F” in it is a select: functions >
programming > comparisons > select.
This box controls how often the
data is logged to a file. The R/T VS
PC control on the front panel should
be set to R/T before building and
deploying a real time version of this
VI to the MyRIO. When it is run in
real time, 300 seconds (five minutes)
will be the interval.
When the front panel is in
control of the VI, other values can be
entered into the data logging interval
control. These values are in seconds
for the elapsed time function; however, they are
converted and displayed in minutes too.
Box #14 True and Box #14 False:
This is the data logging box and is placed in a
true/false case structure. It will execute what is in the true
case when the elapsed time has been completed. Several
strings are concatenated or put together to be written to
the data logging file.
The date, time, set temperature, the actual or current
temperature, the mode (heat or cool coming from box
#12), and finally if the cooling or heating outputs are on at
the time of logging — “FAN” or “HTR.”
Also, LED0 on the MyRIO unit and an LED on the
BOX 9. True. BOX 9. False.
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