ii SITRANS LR400 (7ML5421) – INSTRUCTION MANUAL 7ML19985FH06mmmmmTable of ContentsSymptoms, Causes and Their Remedy ............................................................................................81Fault Messages .....................................................................................................................................82Unit Repair and Excluded Liability ..........................................................................................84Antenna Maintenance .....................................................................................................86Cleaning the Antenna ..........................................................................................................................86Hazardous Installation .....................................................................................................87Appendix I ..........................................................................................................................88Ambient/Operating Temperature Specification .............................................................................88Appendix II .........................................................................................................................89Process Pressure/Temperature De-rating ......................................................................................89Appendix III ........................................................................................................................91Measuring Principle .............................................................................................................................91Appendix IV ........................................................................................................................93HART Communications for SITRANS LR400 ..................................................................................93HART Device Description (DD) .................................................................................................93SIMATIC Process Device Manager (PDM) ...........................................................................93HART Communicator 275/375: ..................................................................................................94Appendix V .........................................................................................................................97PROFIBUS PA Communications for SITRANS LR400 ...................................................................97Device Description ......................................................................................................................97The GSD file ..................................................................................................................................97Bus address (Device Address) .................................................................................................97Bus Termination ...........................................................................................................................98Power Demands ..........................................................................................................................98Cyclic versus Acyclic Data ........................................................................................................98Cyclic Data ....................................................................................................................................98Status Word ............................................................................................................................... 100Extended Diagnostics ..............................................................................................................101Acyclic Data ................................................................................................................................101Configuration Example: ............................................................................................................101Appendix VI: Firmware Revision History ................................................................... 102Glossary ............................................................................................................................ 104Index .................................................................................................................................. 107