.png){kind=logo}
Connect weather stations
Last modified:
Compact Weather Stations WSxxx-UMB (Modbus RTU)
Valid for:
WS200-UMB, WS300-UMB, WS310-UMB, WS301-UMB, WS302-UMB, WS303-UMB, WS304-UMB, WS400-UMB, WS401-UMB, WS500-UMB, WS510-UMB, WS501-UMB, WS502-UMB, WS503-UMB, WS504-UMB, WS600-UMB, WS601-UMB, WS700-UMB, WS800-UMB
Check the respective sensor documentation to find out what power the 24 V DC power supply needs: this may vary depending on the sensor model.
Set the bus address on the compact weather station (see compact weather station documentation).
If the device is the last one on the RS485 bus, terminate the bus with a 120 Ω terminating resistor.
Various Modbus devices can only be queried together if the serial communication parameters are identical (baud rate, number of data bits, parity, stop bits).
Compact Weather Stations WSxxx-UMB (Modbus RTU): Sensor connection
Description | |
|---|---|
| 1 | Data logger terminal, RS485 |
| 2 | Terminating resistor |
| 3 | Compact weather station |
Connection
Wire color | Use |
|---|---|
Yellow | RS485 bus wire B (-) |
Green | RS485 bus wire A (+) |
Brown | Power supply for sensor (+24 V DC) |
White | Sensor GND (-) |
Red | Power supply for heater (+24 V DC) |
Blue | Heater GND (-) |
Gray | Connector for external sensor a |
Pink | Connector for external sensor b |