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Compact Weather Stations WSxxx-UMB (Modbus RTU)
Valid for:
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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
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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.
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Set the bus address on the compact weather station (see compact weather station documentation).
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If the device is the last one on the RS485 bus, terminate the bus with a 120 Ω terminating resistor.
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Various Modbus devices can only be queried together if the serial communication parameters are identical (baud rate, number of data bits, parity, stop bits).
|
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 |