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Rae RAEGuard EC User Manual

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Contents
  1. Table Of Contents
  2. General Information
  3. key features
  4. General Specifications
  5. Operation
  6. Physical Description
  7. Installation and Access Instructions
  8. Instrument Assembly Removal
  9. Electrical Wiring
  10. Earth Grounding Instructions
  11. Display And User Interface
  12. Using The Magnet Key
  13. Reading Display
  14. Calibration
  15. Zero Calibration
  16. Span Calibration
  17. Advanced Menu (EC & LEL)
  18. advanced menu
  19. Advanced Menu (IR)
  20. Restoring Default Values (EC & LEL)
  21. Theory of Operation
  22. Maintenance
  23. Troubleshooting
  24. Table A: EC Sensor configuration
  25. ModBus/RS-485 Information
Rae RAEGuard EC User Manual Manual pdf 39 page image
RAEGuard S EC / LEL / IR User’s Guide6. ModBus/RS-485 InformationRetrieving Gas Concentration Data From A RAEGuard S Via RS-485The RAEGuard s communicates by means of MODBUS RTU. Allmonitors provide a 4-byte register value. Note: Gas concentration isthe only value that can be retrieved.As example be low 34 hex = 52 decimalOverviewThis document describes the modbus protocol used in RAEGuard Sproducts.1. Communication SettingTransmission MODE: RTUController: PC or ControllerClient: RAEGuard S EC, LEL, IRBaud Rate: 4800, 9600, 19200Client ID: 1 to 99 (0x0001 to 0x0063), except for 58 (0x3A)2. Message Frame/Communications ProcedureRAEGuardS EC/LEL/IR only support Function Code 0x03 (readholding registers), which only supports the “Get Reading Value” fromthe detector.38
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This manual is suitable for:
RAEGuard ECRAEGuard IRRAEGuard LEL
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