Power supply, The sdi-12 data pin is the same, The same wiring method can be used as in – Vaisala Hydromet Data Collection Platform User Manual
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Chapter 7 ____________________________________________________________ Technical Data
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The dual RS-485 module also provides an SDI-12 connection. The SDI-
12 line uses one wire for data and is limited to a maximum length of 60
meters.
provides a schematic wiring diagram
for the SDI-12 connection and the 12 VDC power supply for a sensor.
The jumper settings should be as shown in
.
Simultaneously with the SDI-12, you can connect channels A and B in
the 2-wire RS-485 mode. If you take all three channels in use, you either
need three free connectors in the flange or an optional junction box.
1006-103
Figure 178
Dual RS-485 Wiring Diagram for SDI-12 and
12 VDC Power Supply