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Parameter
3
]specif
ies
the channel on which
to
make the
firdt measurement. Parameter
6
specifies
thellnput Storage location
in
which to
store the
firsf channel measurement. lf multiple
repetitions
afe specified, measurements from
sequentialc$annels are stored in adjacent input
locations beginning with
the location specified
in
Parameter
6.
For Example,
if
there are
5
stored
in
Parameter
location
in
the Input Storage
to find
the reference
temperature
this
case location
1
where
the
panel
re
is
stored.
Parameters 7 and
8
are
the
and offset which convert
the
measu
to engineering
units.
The
TC
instructions
the measurement in units of
21X MICROLOGGER OVERVIEW
oC
when
a multiplier of
1
and an offset of 0 are
used.
The
first example was explained one keystroke
at
a
time. Instead of listing each keystroke, the
following format shows the display after
a
value
is keyed
in;
the use of the A key to advance to
the next entry is not
shown.
This
format
is
similar to
that used
in
the PC208 EDLOG
program.
lf
you have followed through sample program
1
and
edited
the
program in OV4.2, your 21X
now has a 5 second
execution interval and
lnstruction 17
in
Table
1
.
To continue with this
example you can simply
advance (key A)
through the
execution interval and Instruction
17
and check the entries against the following
listing. The
new entry starts with
the second
instruction
in
the table.
lnstruction
(Loc.:Entry)
"1
01:5
01:P17
O2:P14
03:P92
Parameter
(Par.#:Entry)
01:1
01:1
02:1
03:5
04:1
05:1
06:2
07:1
08:0
01:0
02:60
03:10
Description
Enter Program
Table
1
5 second
execution interval
Measure panel
temperature
Store
temp. in location
1
Measure thermocouple
temp. (differential).
1
repetition.
Range
code (SmV, slow).
Input channel of TC.
TC
type: copper-constantan.
Reference
temp is stored in location
1.
Store TC
temp in location
2.
Multiplier
of
1
(degrees
C)
Offset of
0.
lf
Time
0 minutes into the interval.
60 minute interual.
Set
Output Flag (Flag
0).
The
21X
is
programmed to measure the thermocouple temperature every 5
seconds.
The
lf
Time
lnstruction,
p2,
sets
the Output Flag
at
the
beginning
of
each
hour.
Next, the instructions for time
and
averagQ
are added.
ov-l3
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