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RayTek 54301 Thermometer User Manual

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ProgrammingGuide

11.7MultipleUnits(MultidropMode,RS485)

Upto32unitscanbeconnectedwithinaRS485network,see section

5.6

InstallingofMultipleSensorsviaRS485onpage31.Todirecta

command to one unit among the 32 possible, it is necessary to

„address“acommand.Therefore,a3‐digitnumberissetpriorthe

command.The3‐digitnumberisdeterminedbetween001and032.

Exception:Broadcastcommand.

Ifacommandistransferred,starting

withthe3‐digitnumber000,all

units (with addresses from 001 to 032) co nnected will get this

command–withouttosendananswer.

Note: A unit with the address 000 is a single unit and not in 

multidropmode.

XA=024 willsetaddressto24(unitmustnotbe

inmultidropmode)

Changinganaddress:

(e.g.theaddressischangefrom24to17)

command answer

„017?E“ „017E0.950“

„017XA=024“ “017XA024”settingofanewaddress

„024?E“ „024E0.950“

Exampleforthebroadcastcommand:

command answer

“024?E” “024E0.950”

“000E=0.5” willbeexecutedfromallunits,noanswer

“024?E” “024E0.500”

“012?E” “012E0.500”

MID 75

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