Configuring the LogoSens 2/DuoSens for the OTT CBS with SDI-12
interface
䡵
Create a LogoSens 2/DuoSens channel with
SDI-12 Master or OTT SDI RS485
function block (
serial sensors tab).
䡵
Apply the following settings:
䊳
Terminal block
LogoSens 2:
A … R
DuoSens
SDI-12 Master: A 3-4 (specified)
DuoSens
OTT SDI RS485: A 1-2 (specified)
terminal block used (screw terminal strip) of the
LogoSens 2/DuoSens.
䊳
Slave address
SDI-12 bus address. Each slave address may
only be allocated once to an SDI-12 bus line.
(checking/setting: see operating instructions
LogoSens 2/DuoSens, Chapter
SDI-12 transparent
mode.) Typical setting: 0 (only one OTT CBS is con-
nected to the terminal block; no bus operation).
䊳
Value no.
Identifies which value (the xth of
n values) of the
OTT CBS is recorded in this channel. Typical set-
ting:
1 (first of seven values: level in [m])
䊳
Measurement mode
M! (For the maximum 7 values of the OTT CBS).
䊳
Allocation of the further four values of the OTT CBS
to virtual terminals (level in [cm]; level in [ft];
pressure in [mbar]; pressure in [psi]; temperature
in [°C]; status; see Chapter 9, command
aM!
and
aV!
for further information).
䡵
In the relevant
Channel function blocks, adjust to the required units and number
of digits after the decimal place (m: 3; cm: 0; ft: 3; mbar: 1; psi: 3; °C: 1;
status: 0).
Note:
To record all seven values of an OTT CBS, seven channels in the
LogoSens 2/DuoSens are necessary. The first channel contains the function block
SDI-12 Master or OTT SDI RS485 as the input signal. The other channels each
contain a function block
Virtual Sensor (V02 to V07) as the input signal. Naturally,
just individual channels can be recorded. In this case, there are fewer entries
required in the
Value no./Virtual Terminal ID field.
Caution:
The measuring time is at least 1 minute.
Value no./
Virtual Terminal ID
Fig. 11: Adjusting the operating parameters
of the LogoSens 2/DuoSens
SDI-12 Master
function block.
The function block
OTT SDI RS485
is set in the same way.
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