Lufft WS500-UMB User Manual

Operating Manual Compact Weather Station
52 G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
18.3.5 Status and Error Codes in Binary Protocol
If a measurement request delivers the <status> 00h, the sensor is working correctly. You can
find a complete list of additional codes in the description of the UMB protocol.
Extract from list:
<status>
Description
00h (0d)
Command successful; no error; all o.k.
10h (16d)
Unknown command; not supported by this device
11h (17d)
Invalid parameter
24h (36d)
Invalid channel
28h (40d)
Device not ready; e.g. initialization / calibration running
50h (80d)
Measurement variable (+offset) is outside the set display range
51h (81d)
52h (82d)
Measurement value (physical) is outside the measuring range (e.g. ADC over range)
53h (83d)
54h (84d)
Error in measurement data or no valid data available
55h ( 85d)
Device / sensor is unable to execute valid measurement due to ambient conditions
18.3.6 CRC Calculation
CRC is calculated according to the following rules:
Norm: CRC-CCITT
Polynomial: 1021h = x
16
+ x
12
+ x
5
+ 1 (LSB first mode)
Start value: FFFFh
You can find further information in the description of a CRC calculation in UMB Protocol.

Lufft WS500-UMB Specifications

General

Brand	Lufft
Model	WS500-UMB
Category	Weather Station
Language	English