5.7 Connecting the OTT PLS to the IP data logger OTT netDL using
an SDI-12 or RS-485 interface
Variant A:
Connecting the OTT PLS 500 using an SDI-12 interface (protocol and
physical interface: SDI-12). The maximum cable length is 200 m!
■
Connect the OTT PLS 500 to the IP data logger OTT netDL as shown in Fig. 6
(right). Also follow the operating instructions of the OTT netDL.
Variant B:
Connect the OTT PLS 500 using a physical RS-485 interface (SDI-12
protocol via physical RS-485 interface). The maximum cable length is 1000 m!
Required wire cross section, see Chapter 5.4.
■
Connect the OTT PLS 500 to the IP data logger OTT netDL as shown in Fig. 6
(left). Also follow the operating instructions of the OTT netDL.
■
Configure the OTT netDL IP data logger as described in the operating instruc-
tions of the device and in the online help of the "OTT Data Logger Operating
Program".
Fig. 6: Connecting the OTT PLS 500 to
an OTT netDL using the RS-485-
interface (SDI-12 protocol; left) or
using the SDI-12 interface (right).
The letters above the screw terminal
strips identify the connectivity options
available on the OTT netDL.
The other (not used) wires of the
pressure probe cable are not shown.
RS-485 B
RS-485 A
Pressure probe cable
RS-485
Input
4
3
1
2
4
3
1
2
OTT netDL
C
OTT netDL
C
+5.5 … +28.8
V
DC
GND
GND
+5.5 … +28.8
V
DC
SDI-12 Data
SDI-12
Input
14
