OTT PLS 500, Руководство по эксплуатации

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Command Response Description
aD0!
a<value1><value2><value3> …
… <value4> <CR><LF>
Send data (after aM! )
a – sensor address
<value1> – mean of measured values "level/pressure"
within the averaging time
measured value formats
1) :
pbbb.eee [m]
pbbbbb.e [cm]
pbbbbb [mm]
pbbb.eee [ft]
pbbbb.eee [inch]
pbb.eeeee [bar]
pbbbb.ee [mbar]
pbbbb.eee [kPa]
pbbb.eeee [psi]
<value2> – water temperature
measured value formats 2) :
pbb.ee [°C]
pbbb.ee [°K]
pbbb.ee [°F]
<value3> – device status
see aD2! after aV!
<value4> – discharge
4)
measured value formats
3)
:
pbbb.eee [m
3
/s]
pbbbbbb [l/s]
pbbbbb.eee
[ft
3
/s]
Note
Measured value =
-9999
➝
calculation error occurred or
rating table missing; =
-9998
➝
entries in the rating table
are not sufficient for the calculation
aMC! atttn<CR><LF>
and after 0/1 … 60 seconds
a<CR><LF>
Start measurement and request CRC (Cyclic Redundancy
Check); for details, see command
aM! .
The response to the following aD0! command is extended
by a CRC value: a<value1><value2><value3> …
… <value4> <CRC><CR><LF>
aC! atttnn<CR><LF>
Start concurrent measurement (simultaneous measurement
with multiple sensors on one single bus line); for details, see -
command
aM! . The number of measured values in the
response to this command has two digits: nn = 03 or 04 4) .
aCC! atttnn<CR><LF>
Start concurrent measurement (simultaneous measurement
with multiple sensors on one single bus line) and request CRC
(Cyclic Redundancy Check); for details, see command
aM!
.
The number of measured values in the response to this com-
mand has two digits:
nn
=
03
or
04 4)
.
The response to the following
aD0!
command is extended by
a CRC value:
a<value1><value2><value3>
…
…
<value4> <CRC><CR><LF>
aR0!
a<value1><value2><value3> …
… <value4> <CR><LF>
The OTT PLS 500 continuously measures level/pressure,
temperature and optionally calculates the discharge. This
command permits to retrieve measurement results even without
the combination of commands
aM! / aD0! ; for details, see
command aD0! after aM! . Requires measurement type
"continuous measurement"; extended command
aXXC<value>!
1 … 3) depending on the set unit; extended command aXSU<value>! 1) ; aXST<value>! 2) ; aXSD<value>! 3)
4) optional with activated discharge measurement; exteded command aXDC<value>!
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