三菱 QJ71LP21S-25 参考手册（PLC到PLC网络连接）.pdf

•SAFETYPRECAUTIONS•

(Alwaysreadbeforestartinguse.)

Beforeusingthisproduct,pleasereadthismanualandtherelevantmanualsintroducedinthismanual

carefullyandpayfullattentiontosafetytohandletheproductcorrectly.

Theinstructionsgiveninthismanualareconcernedwiththisproduct.Forthesafetyinstructionsofthe

programmablecontrollersystem,pleasereadtheCPUmoduleusersmanual.

Inthismanual,thesafetyinstructionsarerankedasDANGERandCAUTION.

!DANGERIndicatesthatincorrecthandlingmaycausehazardousconditions,

resultingindeathorsevereinjury.

!CAUTIONIndicatesthatincorrecthandlingmaycausehazardousconditions,

resultinginmediumorslightpersonalinjuryorphysicaldamage.

Notethatthe!CAUTIONlevelmayleadtoaseriousconsequenceaccordingtothecircumstances.

Alwaysfollowtheinstructionsofbothlevelsbecausetheyareimportanttopersonalsafety.

Pleasestorethismanualinasafeplaceandmakeitaccessiblewhenrequired.Alwaysforwardittothe

enduser.

[DesignPrecautions]

!DANGER

•Makesuretoseethismanualforinformationabouteachstationsoperatingstatuswhena

communicationerroroccursinthenetwork.Erroneousoutputsandmalfunctionsmayresultin

seriousaccidents.

•Ifacoaxialcableisdisconnected,thismaydestabilizetheline,andadatalinkcommunication

errormayoccurinmultiplestations.Makesuretocreateaninterlockcircuitinthesequence

programsothatthesystemwilloperatesafelyeveniftheaboveerroroccurs.Failuretodoso

mayresultinaserousaccidentduetofaultyoutputormalfunctions.

•Whenperformingcontroloperations