Campbell Scientific AM16/32B AM16/32B Relay Multiplexer - Page 24

CR1000, CR800, and CR850 Programming

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AM16/32B Relay Multiplexer Units: the unit of time to be used for the SubInterval parameter. A numeric or alphabetical code can be entered. Numeric 0 1 2 3 Alpha μsec msec sec min Description microseconds milliseconds seconds minutes Count: the number of times the SubScan() will run each time the scan runs. Basically, the count parameter is the number of sets on the multiplexer that you will be using for this SubScan() instruction. For example, if your instruction is SubScan(0,μSec,7) and you are in the in 2x32 mode, this instruction will measure the first seven differential ports (numbers in white) on the multiplexer. If you are in the 4x16 mode, this instruction will measure the first seven sets of four on the multiplexer (numbers in blue). It may be desirable to use the repetition parameter of your measurement instructions that are between SubScan() and NextSubScan. The repetitions parameter is the number of sensors per instruction that you will be measuring. For example, if you are using the 2x32 mode and the program contains the following: SubScan(1,μSec,7) VoltDiff (Dest,1,mV5000,1,True,0,250,1.0,0) NextSubScan You will be making one measurement per differential instruction because the differential instruction has a repetition parameter of 1. A total of seven differential sensors are measured because the count parameter of the SubScan() instruction is 7. In the 4x16 mode, if the program contains the following: SubScan(1,μSec,7) VoltDiff (Dest,2,mV5000,1,True,0,250,1.0,0) NextSubScan You will be measuring two differential sensors per subscan because the differential instruction has a repetition parameter of 2. A total of 14 differential sensors will be measured because the count parameter of the SubScan() instruction is 7 (i.e., 2 measurement per subscan x 7 subscans =14). 5.1.1 CR1000, CR800, and CR850 Programming Although the following example is a CR1000 program, a similar program can be used for the CR800 or CR850. This CR1000 program uses the AM16/32B to measure 48 CS616 probes connected in the 4x16 configuration. The program also measures datalogger battery voltage and temperature. 14

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AM16/32B Relay Multiplexer
Units:
the unit of time to
alphabetical code can
be used for the SubInterval parameter.
A numeric or
be entered.
Numeric
Alpha
Description
0
μ
sec
microseconds
1
msec
milliseconds
2
sec
seconds
3
min
minutes
Cou
()
will run each time the scan runs.
Basi
umber of sets on the multiplexer that you
will
ru
le, if your instruction is
Sub
x32 mode, this instruction will
mea
or
hite) on the multiplexer.
If yo
l measure the first seven sets of
four
ers in blue).
It ma
of your measurement
instr
()
and
NextSubScan
.
The repetitions
para
nsors per instruction that you will be measuring.
For e
e 2x32
following:
SubScan(1,
μ
Sec,7)
st,1,mV5000,1,True,0,250,1.0,0)
be making one measurement per differential instruction because the
differential instruction has a repetition parameter of 1.
A total of seven
count parameter of the
SubScan()
instruction is 7.
the 4
ontains the following:
You will be measuring two differential sensors per subscan because the
tion parameter of 2.
A total of 14
ecause the count parameter of the
SubScan()
instruction is 7 (i.e., 2 measurement per subscan x 7 subscans =14).
5.1.1 CR1000, CR800, and CR850 Programming
Although the following example is a CR1000 program, a similar program can
B
n the 4x16 configuration.
The
program also measures datalogger battery voltage and temperature.
nt:
the number of times the
SubScan
cally, the count parameter is the n
be using for this
SubScan()
inst
ction.
For examp
Scan(
0,
μ
Sec,7
)
and you are in the in 2
sure the first seven differential p
ts (numbers in w
u are in the 4x16 mode, this instruction wil
on the multiplexer (numb
y be desirable to use the repetition parameter
uctions that are between
SubScan
meter is the number of se
xample, if you are using th
mode and the program contains the
VoltDiff (De
NextSubScan
You will
differential sensors are measured because the
In
x16 mode, if the program c
SubScan(1,
μ
Sec,7)
VoltDiff (Dest,2,mV5000,1,True,0,250,1.0,0)
NextSubScan
differential instruction has a repeti
differential sensors will be measured b
be used for the CR800 or CR850.
This CR1000 program uses the AM16/32
to measure 48 CS616 probes connected i
14