blue'Log XM/XC

Connect weather stations

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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
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

0104_all_device-connection-plans_wire_yellow.png Yellow

RS485 bus wire B (−)

0104_all_device-connection-plans_wire_green.png Green

RS485 bus wire A (+)

0104_all_device-connection-plans_wire_brown.png Brown

Power supply sensor (24 V DC +)

0104_all_device-connection-plans_wire_white.png White

GND sensor (−)

0104_all_device-connection-plans_wire_red.png Red

Power supply heating (24 V DC +)

0104_all_device-connection-plans_wire_blue.png Blue

GND heating (−)

0104_all_device-connection-plans_wire_grey.png Gray

External sensor connector a

0104_all_device-connection-plans_wire_pink.png Pink

External sensor connector b

Item numbers

Sensor

Item nos.

Compact weather stations

200.275, 423.306, 200.270, 200.266, 200.795, 423.307, 200.799, 423.312, 423.313, 200.793, 200.260, 200.810, 200.801

Download PDF

blue'Log XM_XC_Connect weather stations_LastMod-2026-08-11_en.pdf