Configuring the OTT netDL/OTT DuoSens for the OTT PLS with
SDI-12 interface
䡵
Create an OTT netDL/OTT DuoSens channel with "SDI-12 Master" or "OTT SDI
RS485" function block (Serial sensors tab).
䡵 Apply the following settings:
䊳
Terminal block OTT netDL "OTT SDI RS485": C 1-2 (default)
OTT netDL "SDI-12 Master" C 3-4 (default)
OTT DuoSens "SDI-12 Master" A 3-4 (default)
OTT DuoSens "OTT SDI RS485": A 1-2 (default)
Terminal block (screw terminal strip) of the OTT netDL
/
OTT DuoSens to which the PLS is connected.
䊳
Slave address SDI-12 bus address. Each slave address may only be
allocated once to an SDI-12 bus feed. (Check/set: Use
the "OTT SDI-12 Interface" tool of the operating pro-
gram.)
Default setting: "0" (only one OTT PLS is connected to
the terminal block with no bus operation).
䊳
Value no. Identifies which value the OTT PLS is recording on this
channel.
– I
n "M!" Measuring Mode: Water level = 1,
temperature = 2
– I
n "M1!" Measuring Mode
: Status of the last measure-
ment = 1
䊳
Measurement mode – "M!" for water level and temperature
– "M1!" for the status of the last measurement.
䊳
Concurrent Mode* ☑: Uses the Concurrent Measuring Mode (C!, C1!)
instead of the SDI-12 default Measuring Mode (M!,
M1!). This allows simultaneous measurement using mul-
tiple sensors connected to a bus line (the sensors
respond to a measurement command without service
request). The sensors must support version 1.2 or later
of the SDI-12-Standard. For further information on the
Concurrent Mode, please refer to the SDI-12-Standard
(please visit "www.sdi-12.org"). This mode is helpful
when multiple sensors are connected to one single bus
line and a longer measuring time and the same query
interval are used for the sensors.
* only in combination with an OTT netD
Fig. 11: Setting the operating parameters of
the OTT netDL/OTT DuoSens "SDI-12 Mas-
ter" function block.
The function block "OTT SDI RS485"
is set in the same way.
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