OTT SDI-12 User manual

English
Operating instructions
OTT USB/SDI-12 Adapter

We reserve the right to make technical changes without further notice!

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Table of contents
1 Scope of delivery 4
2 Order numbers 4
3 Basic saftey information 5
3.1 Markings and symbols used in the instruction 5
3.2 Note the following for safe and trouble-free operation 5
4 Introduction 6
5 Connecting a sensor to the 7
OTT USB/SDI-12 Adapter 7
5.1 Using the RS-485 interface 7
5.2 Via SDI-12 interface 8
5.3 Special case: Connecting OTT SLD via RS-485 interface 9
5.4 Special case: Connecting OTT PLS-C via RS-485-/SDI-12
interface using the OTT FAD 5 connecting kit 10
6 Install, start and operate software 11
7 LED displays 12
8 Repair 13
9 Notes about the disposal of old units 13
10 Technical data 14
Appendix A – Note on Declaration of Conformity 15

1 Scope of delivery
▶– 1 Interface converter with plug-in, 7-pin screw terminal strip
(RS-485-/SDI-12 interface) and USB interface (USB type B socket)
– 1 USB connection cable; USB connector type A to USB type B; 3 m
– 1 USB stick with USB interface driver and "OTT SDI-12 Interface" software
2 Order numbers
▶65.050.002.9.2
▶Accessories "OTT SDI-12 Adapter – OTT FAD 5" connecting kit 97.120.432.3.5
– for temporarily connecting the OTT PLS-C and
the OTT USB/SDI-12 Adapter within the OTT FAD 5
during conductivity sensor calibration
OTT USB/SDI-12 Adapter
OTT USB/SDI-12 Adapter
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3 Basic saftey information
3.1 Markings and symbols used in the instruction
■This bullet point indicates an instruction relating to a specific action.
▶This bullet point indicates an item in a list.
– This bullet point indicates a sub-item in a list.
Remark: …
▶Information on easier and more efficient work
▶Further information
▶Definition
Please note: …
Information that prevents potential damage or malfunction on the
USB/SDI-12 Adapter.
3.2 Note the following for safe and trouble-free operation
▶Read these operating instructions before using the USB/SDI-12 Adapter for the
first time! Become completely familiar with the installation and operation of the
USB/SDI-12 Adapter! Keep these operating instrucations for later reference.
▶Only use the USB/SDI-12 Adapter as described in the operating instructions!
The intended use of the USB/SDI-12 Adapter is the temporary connection of
a sensor via the SDI-12 or RS-485 interface (SDI-12 protocol) to a PC – espe-
cially for changing the sensor configuration or for maintenance work (sensor
calibration). Any other use is not permitted! For further information ➝ refer to
Chapter 4, "Introduction".
▶In addition, observe the respective operating instructions of the sensor you are
connecting to the USB/SDI-12 Adapter.
▶Only install and maintain the USB/SDI-12 Adapter if you are appropriately
qualified to do so. If necessary, arrange training by OTT HydroService.
▶Ensure the electrical, mechanical, and climatic specifications listed in the
technical data are adhered to.
For further information ➝ refer to Chapter 10, "Technical data".
▶Do not make any changes or retrofits to the USB/SDI-12 Adapter. If changes
or retrofits are made, all guarantee claims are voided.
▶Have a faulty USB/SDI-12 Adapter inspected and repaired by our repair
center. On no account carry out repairs yourself!
For further information ➝ refer to Chapter 8, "Repair".
▶After putting the unit out of service, properly dispose of the USB/SDI-12
Adapter. On no account put the USB/SDI-12 Adapter into the normal domestic
waste. For further information ➝ refer to Chapter 9, "Note about the disposal
of used units".
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4 Introduction
When the "OTT SDI-12 Interface" PC software is used, the "USB/SDI-12 Adapter"
provides the option of changing an existing SDI-12 sensor configuration via the
SDI-12 or RS-485 interface (SDI-12 protocol).
For this purpose, the sensor must be temporarily connected to the PC via the inter-
face converter.
The PC Software automatically recognizes the connected sensor type and provides
the appropriate SDI-12 commands conveniently as buttons. The software differen-
tiates between "Standard SDI-12 commands" and "Extended SDI-12 commands".
It is also possible to update the firmware of the sensors. For the OTT PLS-C pres-
sure sensor with conductivity sensor, an additional button is available for calibrat-
ing the conductivity sensor.
The "USB/SDI-12 Adapter" supports for example the following sensors:
– OTT Pluvio2 Precipitation Gauge,
– OTT PLS/OTT PLS 500 Pressure Probe,
– OTT PLS-C Pressure Probe with Conductivity Sensor,
– OTT RLS Radar Level Sensor,
– OTT CBS Bubble Sensor,
– OTT SE 200 Shaft Encoder,
– Side Looking Doppler OTT SLD.
You can also connect sensors from third-party manufacturers with a standard
SDI-12 interface. The software also provides buttons for standard SDI-12 com-
mands for these. In this case you can enter extended SDI-12 commands using an
SDI-12 Terminal Mode.
OTT USB/SDI-12
Adapter
USB-
connecting cable
PC with software
"OTT SDI-12 Interface"
OTT PLS 500
Fig. 1: Changing the factory configuration
of an OTT sensor using SDI-12 commands
at the example of a OTT PLS 500 pressure
probe via the "OTT USB/SDI-12 Adapter".
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5 Connecting a sensor to the OTT USB/SDI-12
Adapter
5.1 Using the RS-485 interface
Please note:
▶The OTT USB/SDI-12 Adapter can supply a connected sensor with a maximum
current consumption of 100 mA. Beyond this, a separate power supply for the
sensor is required. If the green/red LED at the USB/SDI-12 Adapter lights up
red continuously during operation, the current consumption of the sensor is too
high!
▶For individual sensor types, it may be necessary to swap the connected wires at
RS-485 A and RS-485 B for trouble-free operation!
▶Maximum cable length/specification: see operating instructions of the connect-
ed sensor.
+12 VDC
RS-485 B
RS-485 A
GND
RS-485 B
RS-485 A
GND
7-pin screw terminal
strip
7-pin screw terminal
strip
RS-485
interface
sensor
RS-485
interface
sensor
GND
I < 100 mA
I ≥ 100 mA
Voltag supply sensror
1
2
3
4
2
3
4
Fig. 2: Connection plan of OTT PLS to
"OTT USB/SDI-12 Adapter"via the
RS-485 interface.
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5.2 Via SDI-12 interface
Please note:
▶The OTT USB/SDI-12 Adapter can supply a connected sensor with a maximum
current consumption of 100 mA. Beyond this, a separate power supply for the
sensor is required. If the green/red LED at the USB/SDI-12 Adapter lights up
red continuously during operation, the current consumption of the sensor is
too high!
▶Maximum cable length/specification: see operating instructions of the con-
nected sensors.
+12 VDC
SDI-12
GND
7-pin screw terminal
strip
7-pin screw terminal
strip
SDI-12
interface
sensor
5
SDI-12
GND
SDI-12
interface
sensor
GND
I < 100 mA
I ≥ 100 mA
Voltage supply sensor
5
6
7
6
7
Fig. 3: Connection plan of sensor
with SDI-12 interface to the
"OTT USB/SDI-12 Adapter".
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5.3 Special case: Connecting OTT SLD via RS-485 interface
Note: The connection of an OTT SLD via the SDI-12 interface is carried out as
shown in Chapter 5.2 (variant above; I ≤ 100 mA).
7-pin screw terminal strip
OTT SLD
max. 500 m
RS-422
Voltage supply
Rx+ 1
2
3
4
Rx–
Tx+
GND
+9 … 16 V
Tx–
RS-422
not in use
RS-422 RS-485
RS-485
Fig 4: Connection plan of OTT SLD
to "OTT USB/SDI-12 Adapter"via
RS-485 interface.
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5.4 Special case: Connecting OTT PLS-C via RS-485-/SDI-12 inter-
face using the OTT FAD 5 connecting kit
The connection variant described here shows the connection of the OTT PLS-C
to the OTT USB/SDI-12 Adapter using the "OTT SDI-12 Adapter – OTT FAD 5
connecting kit".
■Disconnect the 4-pin plug connector (screw terminal strips) in the humidity
absorber. If the voltage supply to the OTT PLS-C is continuous (not switched),
the 2-pin connector can remain plugged.
■Connect the connecting cable of the connecting kit to the 4-pin plug in the
humidity absorber and to the OTT USB/SDI-12.
Note: If you do not use the connecting kit, the connection is made as shown in
Chapter 5.1 or 5.2 (variant in each case above; I ≤ 100 mA).
OTT PLS-C
+6 … 28 V GND
RS-485 B
RS-485 A
SDI-12: max. 100 m/RS-485: max. 1000 m
SDI-12 Data
SDI
GND
BA
BA
GND
SDI
BA
SDI
GND +
GND +
OTT FAD 5
Connecting cable OTT SDI-12
Adapter – OTT FAD 5 connecting kit
Connection
datalogger
7-pin screw terminal strip
Fig. 5: Connection plan of OTT PLS-C to
"OTT USB/SDI-12 Adapter"via
SDI-12-/RS-485 interface.
Depending on the variant of the OTT PLS-C
only one interface type (SDI-12 or RS-485)
is used. The "OTT USB/SDI-12 Adapter –
OTT FAD 5 connecting kit" still offers the
possibility to connect the wires of the inter-
face not in use to the screw terminal block
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