Beckhoff CX210000x4 Manuel d'utilisateur télécharger pdf (Page 19)

Productoverview

ChangedsettingsarestoredfailsafeinBeckhoffdevices.

Ifthedeviceislaterexchanged,however,thesettingsthathavebeenchangedfromtheseriesstandardare

lost.TheEtherCATmastercanthenloadthechangedCoEparametersintothenewdeviceatstartup,ifitis

setupappropriately.

SothataCoEdirectoryisavailableofflineduringthepreparationforconfiguration,itcanbecontainedinthe

devicedescriptionasacopy.

TheextenttowhichtheCoEdirectoryissupporteddependsonthecapabilitiesoftheEtherCATmaster.

Tab:Online

thestatemachineoftheEtherCATcommunicationisdisplayedhere.Itcanalsobeswitchedtoadifferent

statehere.Thisisdonebyselectingthedesiredstatebyamouseclickontheappropriatebutton.The

individualstatesarebrieflydescribedbelow.Forfurtherinformation,pleaserefertotheEtherCATsystem

descriptiononourwebpage.

EtherCATStateMachine

ThestateoftheEtherCATslaveiscontrolledviatheEtherCATStateMachine(ESM).Dependinguponthe

state,differentfunctionsareaccessibleorexecutableintheEtherCATslave.Specificcommandsmustbe

sentbytheEtherCATmastertothedeviceineachstate,particularlyduringthebootupoftheslave.

Adistinctionismadebetweenthefollowingstates:

• Init

• PreOperational

• SafeOperationaland

• Operational

• Boot

TheregularstateofeachEtherCATslaveafterbootupistheOPstate.

CX210000x4 19Version1.0

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Beckhoff CX2100­00x4 Manuel d'utilisateur Page 19