Siemens SITRANS LR120 Modbus Operating Instructions Manual page 5

Table of Contents
7.1 Connecting .......................................................................................................... 23
8 Operating ............................................................................................................................. 25
9 Diagnostics and troubleshooting ........................................................................................ 31
9.1 Maintenance ....................................................................................................... 31
9.2 Rectify faults ....................................................................................................... 31
9.3 Status messages according to NE 107 ................................................................. 32
9.4 Treatment of measurement errors ....................................................................... 35
9.5 Return procedure ................................................................................................ 40
9.6 Technical support ................................................................................................ 41
9.7 How to proceed if a repair is necessary ............................................................... 41
10 Service and maintenance .................................................................................................... 43
10.1 Dismounting steps .............................................................................................. 43
10.2 Disposal .............................................................................................................. 43
11 Certificates and approvals .................................................................................................. 45
11.1 Radio licenses ..................................................................................................... 45
11.2 Approvals for Ex areas ......................................................................................... 45
11.3 Ship approvals ..................................................................................................... 45
11.4 Food and pharmaceutical certificates ................................................................... 45
11.5 Conformity .......................................................................................................... 46
11.6 NAMUR recommendations ................................................................................... 46
12 Technical data and dimensions .......................................................................................... 47
12.1 Technical data ..................................................................................................... 47
12.2 Modbus - Overview ............................................................................................ 50
12.3 Communication (Holding Register) ...................................................................... 51
12.4 Setup (Holding Register) ..................................................................................... 51
12.5 Measured values (Input Register) ......................................................................... 52
12.6 Additional measurement data (Input Register) ..................................................... 54
12.7 Diagnosis data, device information (Input Register) ............................................. 54
12.8 Function codes .................................................................................................... 54
12.9 Configuration of typical Modbus hosts ................................................................ 57
12.10 Dimensions ......................................................................................................... 57
12.11 Licensing information for open source software .................................................. 57
12.12 Trademark ........................................................................................................... 57
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Operating Instructions, 10/2022, 62709-76-01, A5E49829030
SITRANS LR120 Modbus