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RayTek MI Miniature Infrared Sensor Thermometer User Manual

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Installation

32 MI

ForaninstallationoftwoormoresensorsinaRS485network,each

sensoriswiredparalleltotheothers.

Youmayconnectupto32units.Makesuretodeactivatethepreset

shuntresistorforallunitsexceptforthelastone.Thepositionofthe

switchtodeactivatethe

shuntyoucanseeontheelectronicboardin

thefigureabove.

Beforeunitsareinanetworkthemultidropaddressneeds

tobedefined.Eachsensormusthaveauniqueaddress!

Thefollowingfigureillustratesthewiringofsensorsina multidrop

installation.



Figure22:WiringtheRS485Network



Theaddres ssettingcanbedoneeitherthroughbuttonsorthrough

softwarealternatively

.

AddressingthroughButtons

Press the <Mode> button until “M” becomes

visible. Use the <Down> and <Up> buttons

untiltherequestedaddressappears.Pressthe

<Mode>buttontoacknowledgeyourselection.



AddressingthroughSoftware

Alternativelythesensorcanbecontrolledbymeansoftheoptional

availablesoftwareDataTempMultiDrop.

RxB

Rx

A

RS232/485

A

dapter

unit 1

unit

before

last

last unit

with shunt

activated!

unit 2

A

A

A

A

B

B

B

B

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