RayTek MI Miniature Infrared Sensor Programming Guide Transfer Modes, Settings

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transfer rate: 9.6 kBaud, 8 data bits, 1 stop bit, no
parity, flow control: none (half duplex mode).

Programming Guide

11.1 Transfer Modes

The unit’s serial interface is either RS232 or RS485, depending on the model.

Settings:

There are two possible transfer modes for the serial interface:

Poll Mode: By user interface control, a parameter will be set or requested.

Burst Mode: A pre‐defined data string (“burst string“) will be transferred as fast as possible as long as the burst mode is activated. The data will be transferred in one direction only, from the unit to the user interface.

V=P

“P“ starts the Poll mode (allows to request or to set

 

parameters)

V=B

“B“ starts the Burst mode (data will be transferred as

 

fast as possible; necessary: data string definition –

 

“Burst string“)

$=UTIE

“$“ sets the parameter combination (“burst string“)

 

“U“ unit (°C or °F)

 

“T“ temperature value

 

“I“ internal temperature of the sensing head

 

“E“ emissivity

?X$

gives the burst string parameters while in poll mode

Return from the burst mode to the poll mode:

If the poll mode shall be activated while the burst mode is still active, send a character and within the following 3 seconds the command V=P.

MI

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Contents Operating Instructions Declaration of Conformity for the European Community United Kingdom France ContactsEurope Raytek GmbH Raytek CorporationWarranty Table of Contents Onnecting to the PC VIA RS232 Output for the Target Temperature Ommand S ET Safety Instructions Safety InstructionsOperating Instructions Description DescriptionTechnical Data Technical DataMeasurement Specifications Transmission Temperature ResolutionTemperature Coefficient EmissivityOptical Resolution DS Technical Data Optical SpecificationsTechnical Data Electrical Specifications Power SupplyOutputs Technical Data Environmental Specifications Dimensions of Sensing Head Technical Data DimensionsScope of Delivery Dimensions of Electronic BoxMeasurement of Infrared Temperature BasicsBasics Ambient Temperature Basics Emissivity of Target ObjectAtmospheric Quality Basics Electrical Interference Distance to Object InstallationInstallation PositioningSensor Head Cable WiringCable Preparation Cable for Power Supply and OutputsConnecting of Cables to the Electronic Box Signal Outputs and Power Supply Installation OutputsWiring of the Signal Output mA or Signal OutputWiring the Output for Head Ambient Temperature Head Ambient Temp. / Alarm OutputInstallation Wiring the Thermocouple J Compensation Cable Wiring the Thermocouple K Compensation CableThermocouple Output Overview to the FTC Inputs Installation Inputs FTCRatio between Analog Input Voltage and Emissivity Example Emissivity Setting analog controlledDigital Selection of Emissivity with FTC Inputs Emissivity Setting digital controlledAmbient Background Temperature Compensation Principle of Ambient Background Temperature Compensation Trigger and Hold Function Wiring of FTC3 as External InputFTC3 for Holding the Output Temperature Connecting the RS232 cable Installation Connecting to the PC via RS232Wiring the RS485 Interface Installation Installing of Multiple Sensors via RS485Addressing through Software Addressing through ButtonsInstallation Operation OperationControl Panel Operation Setting the Output Jumper Operation Setting of Modes Available Modes Mode RangeAveraging Operation Post ProcessingOperation Peak Hold Valley Hold Advanced Peak Hold Advanced Valley Hold Advanced Peak Hold with AveragingAdvanced Valley Hold with Averaging Operation Factory Defaults Options OptionsAccessories AccessoriesOverview Standard Mounting Accessories Adjustable Mounting Bracket Xxxmiacab Accessories Adjustable Mounting BracketFixed Mounting Bracket Xxxmiacfb Accessories Fixed Mounting BracketAir Purging Jacket Xxxmiacaj Accessories Air Purging JacketMounting the Air Purge Jacket Air Cooling System Accessories Air Cooling SystemAir Flow Accessories Air Cooling System T‐Adapter Dimensions of Air Cooling System Right Angle Mirror * with Air Purging Accessories Right Angle MirrorBox Lid with View Port for Post Installations Accessories Box LidProtective Window Xxxmiacpw Accessories Protective WindowTroubleshooting MaintenanceMaintenance Troubleshooting Minor ProblemsError Codes for the Outputs Maintenance Fail‐Safe OperationError Codes via RS232/485 Error Codes via RS232/485 Error Codes for the LCD DisplayError Codes LCD Display Maintenance Sensing Head Exchange Maintenance Software SoftwareProgramming Guide Programming GuideSettings Return from the burst mode to the poll modeProgramming Guide Transfer Modes Device response format Programming Guide General Command StructureRequesting a parameter Poll Mode Setting a parameter Poll ModeError message Device InformationDevice Information Selection of the emissivity setting Programming Guide Device SetupTemperature Calculation Emissivity Setting and Alarm Set pointsTable for Emissivity and Set Points Post Processing Dynamic DataProgramming Guide Device Control Output for the Target TemperatureAlarm Output Factory default valuesLock Mode Mode Setting for the Digital Input FTC3Changing the Sensing Head Calibration Data Setting the command ES = D Changing an address Programming Guide Multiple Units RS485 Multidrop ModeLCD Programming Guide Command SetDescription LT ‐40 to 600C ‐40 to 1112F = number, X = uppercase letter Command Set Appendix AppendixDetermination of Emissivity Appendix Appendix Typical Emissivity Values Metals Tab Typical Emissivity Values for Metals Tab Typical Emissivity Values for Non‐Metals NON -METALSIndex Index