5.9 Connecting the OTT PLS to the Sutron S
AT
L
INK
3 data logger
using the SDI-12 or RS-485 interface
Variant A:
Connecting the OTT PLS 500 using an SDI-12interface (protocol
and physical interface: SDI-12). The maximum cable length is 200 m!
■
Connect the OTT PLS 500 to the Sutron S
AT
L
INK
3 satellite transmitter as shown
in Fig. 8 (right). Also follow the operating instructions of the Sutron S
AT
L
INK
3.
Variant B:
Connecting the OTT PLS 500 using a physical RS-485 interface (SDI-
12 or Modbus 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 Sutron S
AT
L
INK
3 satellite transmitter as shown
in Fig. 8 (left). Also follow the operating instructions of the Sutron S
AT
L
INK
3.
■
Configure the Sutron S
AT
L
INK
3 satellite transmitter as described in the operat-
ing instructions of the device.
Fig. 8: Connectig the OTT PLS 500
to the Sutron S
AT
L
INK
3 via RS-485
interface (SDI-12 or Modbus protocol,
left) or via SDI-12 interface (right).
The other (not used) wires of the
pressure probe cable are not shown.
GND
→
13 (alternatively 16)
+5.5 … +28.8 V
DC
→
14 (alternatively 17)
SDI-12 Data
→
15 (alternatively 18)
RS-485 A
→
5
RS-485 B
→
6
GND
→
13 (alternatively 16 or 22)
+5.5 … +28.8 V
DC
→
14 (alternatively 17 or 21)
left
left
RS-485
SDI-12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
16
