Siemens SITRANS LR 300, Инструкция по эксплуатации, Страница: 6 / 140

Page 4 SITRANS LR 300 – INSTRUCTION MANUAL 7ML19985CL02
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Appendix VI ......................................................................................................................108
HART Communications for the SITRANS LR 300 ....................................................................... 108
HART Device Descriptor (DD) ............................................................................................... 108
Simatic Process Device Manager (PDM): ......................................................................... 108
HART Communicator 275: ....................................................................................................... 109
Supported HART Commands: ..............................................................................................113
Appendix VII: Profibus PA ............................................................................................. 114
Profibus PA Communications for the SITRANS LR 300 .............................................................114
Device Descriptor ......................................................................................................................114
The GSD file ................................................................................................................................114
Bus address (Device Address) ...............................................................................................114
Bus Termination .........................................................................................................................115
Power Demands ........................................................................................................................115
Cyclic versus Acyclic Data ......................................................................................................115
Cyclic Data ..................................................................................................................................115
Status Word ................................................................................................................................117
Diagnostics .................................................................................................................................118
Acyclic Data ................................................................................................................................118
Configuration Example: ............................................................................................................118
Profibus Level Device Design ...........................................................................................................119
Profile 3.0 Class A Design .......................................................................................................119
Block Model .............................................................................................................................119
Transducer Block - Level .........................................................................................................120
Parameter Structure .................................................................................................................121
Sensor Value ............................................................................................................................121
Sensor Unit ...............................................................................................................................121
Level, Primary Value ...............................................................................................................121
Level, Primary Value Unit ......................................................................................................121
Sensor Reference Point ........................................................................................................121
Function Blocks – Analog Input .............................................................................................122
Linear conversion: ..................................................................................................................122
Device Management ................................................................................................................123
Directory................................................................................................................................... 123
Physical Block 1 ......................................................................................................................124
Transducer Block 1 .................................................................................................................125
Function Block 1 - Level ........................................................................................................129
Function Block 2 - Space ......................................................................................................130
Function Block 3 - Distance ..................................................................................................131
Function Block 4 - Volume ....................................................................................................131
Appendix VIII: hazardous area installations ............................................................. 132
Instructions specific to hazardous area installations ................................................................132
(Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6) ...............................................132
SITRANS LR 300.book Page 4 Monday, June 10, 2002 7:18 PM