Signal output, Figure 8, Wiring of the sensors – Vaisala WAC155 User Manual
Page 22: Of the cables through the cable glands, refer to
User's Guide ______________________________________________________________________
20 ___________________________________________________________________M210822EN-A
0702-007
Figure 8
Wiring of the Sensors
Signal Output
The WAC155 transmitter provides a half-duplex RS-485 serial bus
connection. Wind data is provided in standard NMEA messages. In
addition, a service connection is available for configuration and status
information. The service connection is available through the same
RS-485 interface. When the service connection is in use, data
transmission and query are disabled.
Several transmitters can be connected to the same RS-485 bus. If only
a single transmitter is connected, the transmitter can be configured in
auto-transmit mode, i.e. the device transmits data messages at
configured intervals. If there are several transmitters in the same bus,
auto-transmission may not be enabled, and data must be polled using a
query.
The following numbers refer to
1
=
Anemometer cable
2
=
Glands for power and signal cables
3
=
Wind vane cable