Lufft SHM31 User Manual

UMB communication
Snow depth sensor SHM 31, V2.1 37
9. UMB communication
9.1. Factory settings
In the delivery state, the SHM 31 has the following settings:
Class ID: ........................................................ 11 (cannot be changed)
Device ID: ...................................................... 1 (results in address B001 (hex) = 45057)
Baud rate: ...................................................... 19200
RS485 protocol: ............................................ UMB binary
9.2. Overview of measuring channels
The channel assignment is valid for online data requests with the UMB protocol.
UMB channel
act
min
max
avg
Measured variable (float32)
Unit
100
101
102
103
block temperature
°C
104
105
106
107
block temperature
°F
108 109 110 111
ambient temperature
(window inside)
°C
112 113 114 115
ambient temperature
(window inside)
°F
120
121
122
123
laser temperature
°C
124
125
126
127
laser temperature
°F
500
501
502
503
tilt angle
°
504
x-angle
°
505
y-angle
°
506
z-angle
°
510
tilt angle reference
°
Table 12: Measuring channels SHM31: 100 – 599 (float 32 data type)
UMB channel
act
min
max
avg
Measured variable (float32)
Unit
600
601
602
603
snow depth
mm
604
605
606
607
snow depth
cm
608
609
610
611
snow depth
m
612
613
614
615
snow depth
inch
650
distance
mm
651
distance
inch
660
distance raw
mm
661
distance raw
inch
690
sensor altitude
mm
Table 13: Measuring channels SHM31: 600 - 690 (float32 data type)

Lufft SHM31 Specifications

General

Brand	Lufft
Model	SHM31
Category	Accessories
Language	English