C
HAPTER
5 Y
OUR
F
IRST
P
ROGRAM
: Create a Program
35
UM-0071-A0
g) Now specify the channel you want schedule A to
read (the potentiometer channel) by following the
numbered steps in Figure 31.
When you’ve finished working through Figure 31,
you’ve specified your first schedule.
h) In DeLogger’s File menu, choose
Save Project
.
This ensures you won’t lose any of the work you’ve
just done.
i) Note that there are a number of other columns in
the program builder window.
They allow you to further affect how your input
channels and sensors are managed during
measurement, and how resulting data is processed
and manipulated. Click the Configure buttons and
the drop-down list buttons in these columns to see
more of what’s available.
You’ve just created and saved your first DeLogger
program. It contains one schedule, schedule A. When
you send it to the DT800, it will instruct the DT800 to
scan channel 1 every half-second as a resistance and
log the measurements.
Your program contains only one schedule because tab
A
(at the bottom of the program builder window) is the
only one in which you’ve assigned a channel. In later
chapters you’ll add
• another channel to schedule A
• another schedule, schedule B, to the program.
➊
Single-click in the Signal column of
R1
(the first row of the Channel Definitions
area)
.
➋
Click the drop-down list button
that appears in the
Signal
column of R1
.
➌
Click
Resistance
in the list
(because you want the DT800
to read the potentiometer as a
resistance).
➍
Click the Configure button
in the
Wiring
column.
The Resistance Wiring dialog box opens.
➎
Check that both the
Start Channel
and
End Channel
fields
contain
1
(you
connected the
potentiometer to
channel
1
).
➏
Check that the
2-Wire +/–
option is
selected (you made a
2-wire
connection to
the
+
and
–
terminals
of channel
1
).
➐
Notice the other wiring configurations and
the information area across the bottom of the
dialog box.
Click
3-Wire Resistance Inputs
and
4-
Wire Resistance Inputs
at the top of the
dialog box. Examine these tabs but don’t
make any changes.
When you’ve finished, check that the settings
on the
2-Wire Resistance Inputs
tab are
as described in
➎
and
➏
then click
OK
.
F
IGURE
31
Specifying the potentiometer channel
Summary of Contents for DT800
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