Lufft SHM31 User Manual

Snow depth sensor SHM 31, V2.1
Contents
1. Read before commissioning ...................................................................................................................................... 5
1.1 Symbols used ...................................................................................................................................................... 5
1.2 Safety instructions ............................................................................................................................................... 5
1.3 Notes on laser safety and laser classification ...................................................................................................... 5
1.4 Intended use ........................................................................................................................................................ 6
1.5 Incorrect use ........................................................................................................................................................ 6
1.6 Brand names used .............................................................................................................................................. 6
2. Item names and technical data .................................................................................................................................. 7
2.1. Labelling .............................................................................................................................................................. 7
2.2. Technical data ..................................................................................................................................................... 8
2.3. Scope of delivery ................................................................................................................................................. 9
2.4. Additional documents and software ................................................................................................................... 11
3. Description of the device ......................................................................................................................................... 12
3.1. Basic principles of the measurement method .................................................................................................... 12
3.2. Introduction to assembly and commissioning .................................................................................................... 12
3.3. Sensor heating .................................................................................................................................................. 13
4. Generating the measured values ............................................................................................................................. 14
4.1. Measured values (curr, avg) .............................................................................................................................. 14
4.2. Normal mode ..................................................................................................................................................... 14
5. Assembly ................................................................................................................................................................... 15
5.1. Assembly instructions ........................................................................................................................................ 15
5.2. Assembly ........................................................................................................................................................... 15
6. Connections .............................................................................................................................................................. 17
6.1. Connecting the device ....................................................................................................................................... 17
6.2. Connector pin assignment ................................................................................................................................. 17
6.3. Recommended cable shield connection ............................................................................................................ 17
6.4. Supply voltage ................................................................................................................................................... 17
6.5. Data interfaces .................................................................................................................................................. 17
6.6. Heating release ................................................................................................................................................. 17
7. Commissioning ......................................................................................................................................................... 18
7.1. Important information for commissioning ........................................................................................................... 18
7.2. Switching on ...................................................................................................................................................... 18
7.2.1. Settings over RS232 or RS485 ............................................................................................................... 18
7.3. UMB ConfigTool.NET ........................................................................................................................................ 18
7.3.1. Basic installation with ConfigTool.NET and a serial interface ................................................................. 18
7.3.2. The SHM 31’s sensor parameters .......................................................................................................... 26
8. Communication over UMB-ASCII 2.0 ....................................................................................................................... 29
8.1. Syntax ................................................................................................................................................................ 29
8.2. Checksum .......................................................................................................................................................... 29
8.3. Examples ........................................................................................................................................................... 29
8.4. Description of the data telegram #1 with an example ........................................................................................ 30
8.5. Angle adjustment ............................................................................................................................................... 30
8.6. Switching from UMB protocol to ASCII protocol ................................................................................................ 30
8.7. ASCII command overview ................................................................................................................................. 31
9. UMB communication ................................................................................................................................................ 37
9.1. Factory settings ................................................................................................................................................. 37
9.2. Overview of measuring channels ....................................................................................................................... 37
9.3. Communication in binary protocol ..................................................................................................................... 39
9.3.1. Data frame .............................................................................................................................................. 39
9.3.2. Addressing with class ID and device ID .................................................................................................. 39
9.3.3. Example of creating addresses. .............................................................................................................. 39

Lufft SHM31 Specifications

General

Brand	Lufft
Model	SHM31
Category	Accessories
Language	English