Appendix a networking, Connecting several wxt510s on the same bus, Sdi-12 serial interface – Vaisala WXT510 User Manual
Page 133: Wiring, Networking, Sdi-12 serial interface wiring, Appendix a
Appendix A ______________________________________________________________ Networking
VAISALA ______________________________________________________________________ 131
APPENDIX A
NETWORKING
Connecting Several WXT510s on the Same Bus
Connecting several WXT510s on the same bus is possible in two ways:
1.
Using SDI-12 serial interface and communication protocol, and
2.
Using RS-485 serial interface and one of the following
communication protocols: ASCII or NMEA 0183 v3.0.
SDI-12 Serial Interface
Wiring
1.
Make the SDI-12 wiring in WXT510 as described in
Chapter 5,
Wiring and Power Management, on page 35
. Remember to
combine the two "Data in/out"wires of each WXT510 either in the
internal screw terminal inside or outside the transmitter.
2.
In the data logger end, combine the "GND for data" wires of each
WXT510 to the logger "GND for data" wire. Connect the "Data in/
out" wires of each WXT510 to the logger "Data" wire.