Pilz PSSnet GW1 MOD--CAN User manual

PSSnetGW1MODEtherCAT
OperatingManual1002692EN03
Gateways

Preface
Thisdocumentisatranslationoftheoriginaldocument.
AllrightstothisdocumentationarereservedbyPilzGmbH&Co.KG.Copiesmaybemade
forinternalpurposes.Suggestionsandcommentsforimprovingthisdocumentationwillbe
gratefullyreceived.
Pilz®,PIT®,PMI®,PNOZ®,Primo®,PSEN®,PSS®,PVIS®,SafetyBUSp®,
SafetyEYE®,SafetyNETp®,thespiritofsafety®areregisteredandprotectedtrademarks
ofPilzGmbH&Co.KGinsomecountries.
SDmeansSecureDigital

Content
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 3
Section1 Introduction 5
1.1 Validityofdocumentation 5
1.2 Usingthedocumentation 5
1.3 Definitionofsymbols 5
Section2 Overview 7
2.1 Modulefeatures 7
2.2 Unitview 8
2.2.1 Front 8
2.2.2 Top 9
2.2.3 Righthandside 9
2.2.4 Bottom 10
Section3 Safety 11
3.1 Intendeduse 11
3.1.1 Electromagneticcompatibility 11
3.1.1.1 Connectingtheearthcables 12
3.1.1.2 Cablerouting 13
3.1.1.3 Equipotentialbonding 13
3.1.1.4 Shielding 14
3.1.1.5 Lightinginthecontrolcabinet 14
3.1.1.6 TestingtheEMCcomplianceofaninstallation 15
3.2 Safetyregulations 16
3.2.1 Useofqualifiedpersonnel 16
3.2.2 Warrantyandliability 16
3.2.3 Disposal 16
3.3 Safetyduringinstallation 16
Section4 Functiondescription 18
4.1 Operation 18
4.1.1 Blockdiagram 18
4.2 Modbus/TCP 19
4.2.1 Modbus/TCPdataranges(Serverconnections) 19
4.2.2 Datatransferlimits 19
4.2.3 Functioncodes(Clientconnections) 20
4.3 EtherCAT 21
4.4 Translationtables 22
4.4.1 Payload 22
4.4.2 Diagnosticdata 22
4.5 Interfaces 25
Section5 Installation 26
5.1 Generalinstallationguidelines 26
5.1.1 Dimensions 27
5.2 Mountingdistances 28
5.3 Supplyvoltage 28
5.4 InstallGateway 29

Content
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 4
Section6 Commissioning 30
6.1 Generalwiringguidelines 30
6.2 Wiringtheunits 30
6.2.1 Cablerequirements 30
6.2.2 Terminals 31
6.3 Terminalconfiguration 31
6.4 Interfaces 31
6.4.1 RJ45interface 31
6.4.1.1 RJ45connectioncable 32
6.5 Addresssetting 32
6.5.1 IPaddresssetting 32
Section7 Operation 34
7.1 Displayelements 34
7.1.1 Displayelementsfordevicediagnostics 34
7.2 Webserver 35
7.2.1 Callwebserver 35
7.2.2 Passwordmanagement 36
7.3 Performfirmwareupdate 36
7.4 ExchangeGateway 37
Section8 TechnicalDetails 38
Section9 Orderreference 41

Introduction
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 5
1 Introduction
1.1 Validityofdocumentation
ThisdocumentationisvalidfortheproductPSSnetGW1MODEtherCAT.Itisvaliduntil
newdocumentationispublished.
Thisoperatingmanualexplainsthefunctionandoperation,describestheinstallationand
providesguidelinesonhowtoconnecttheproduct.
1.2 Usingthedocumentation
Thisdocumentisintendedforinstruction.Onlyinstallandcommissiontheproductifyou
havereadandunderstoodthisdocument.Thedocumentshouldberetainedforfutureref
erence.
1.3 Definitionofsymbols
Informationthatisparticularlyimportantisidentifiedasfollows:
DANGER!
Thiswarningmustbeheeded!Itwarnsofahazardoussituationthatposes
animmediatethreatofseriousinjuryanddeathandindicatespreventive
measuresthatcanbetaken.
WARNING!
Thiswarningmustbeheeded!Itwarnsofahazardoussituationthatcould
leadtoseriousinjuryanddeathandindicatespreventivemeasuresthatcan
betaken.
CAUTION!
Thisreferstoahazardthatcanleadtoalessseriousorminorinjuryplus
materialdamage,andalsoprovidesinformationonpreventivemeasures
thatcanbetaken.
NOTICE
Thisdescribesasituationinwhichtheproductordevicescouldbedam
agedandalsoprovidesinformationonpreventivemeasuresthatcanbe
taken.Italsohighlightsareaswithinthetextthatareofparticularimport
ance.

Introduction
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 6
INFORMATION
Thisgivesadviceonapplicationsandprovidesinformationonspecialfea
tures.

Overview
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 7
2 Overview
2.1 Modulefeatures
ThePSSnetGW1MODEtherCAT
}operatesasaprotocolconverterbetweenModbus/TCPandEtherCAT,
}canbeusedtoexchangedatabetweenproductsthatsupportModbus/TCPorEther
CAT.Forexample,thismaybeacontrolsystemfromtheautomationsystem
PSS4000fromPilzononesideandathirdpartyproductontheother.Thethirdparty
productmustsupportEtherCAT.
FeaturesofthePSSnetGW1MODEtherCAT:
}CanbeusedwithPilzproductsthatsupportModbus/TCP:
– ControlsystemsfromtheautomationsystemPSS4000(e.g.PSSuH)
– Compact/modular3rdgenerationPSSrangeprogrammablesafetysystems(e.g.
PSSSB30063ETH2,PSS(1)SBCPU3ETH2)
– OperatorterminalsPMIwithModbus/TCPinterface(e.g.PMI5)
– Motioncontrolsystems(e.g.PMCprimoDrive3,PMCprimoDriveP,PMCprimo16+)
}1xRJ45socketforconnectiontoModbus/TCP,
}Canmanageupto8Modbus/TCPconnections
}CanoperateasaModbus/TCPconnectionServer,
}WebserverformanagingandconfiguringtheGateway,
}SupportsCANopenoverEtherCAT,
}OperatesasaSlaveintheEtherCATnetwork,
}Transmissionrate10MBit/s(10BaseT)and100MBit/s(100BaseTX),
}2xRJ45socketforconnectiontoEtherCAT,
}supportsautonegotiating,
}LEDsfordisplayingthecommunicationstatusanderrors,
}input/outputdata
– upto512Bytesacyclicaldata(SDO),
– intotal(RxPDOandTxPDO)max.512Bytes,
– additionallyitispossibletotransferdatabetweenthecontrolsystems,
}supplyvoltage
– 20msbufferincaseofsupplyinterruptions,
– pluginconnectionterminals(eitherspringloadedterminalorscrewterminal).

Overview
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 8
2.2 Unitview
2.2.1 Front
22,5 (0,88“)
Fig.:Frontview
:LEDsfordisplayingthecommunicationstatusandfaults
:EtherCATinterfacesX1andX2(RJ45)
:MACaddress
:Barcodewiththeitemnumber,serialnumberandversionoftheGateway
:2DcodewiththeMACaddress
isregisteredtrademarkandpatentedtechnology,licensedbyBeckhoff
AutomationGmbH,Germany

Overview
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 9
2.2.2 Top
OFF ON
IP-ADDRESS
128
64
32
16
8
4
2
1
Fig.:Top
:Modbus/TCPinterface(RJ45)
:DIPswitchforIPaddress
2.2.3 Righthandside
110,4 (4,35“)
96 (3,78“)
128
64
32
16
8
4
2
1
IP-Address
Fig.:Righthandside
:QRcodewithalinktothePilzhomepagewithfurtherinformationontheGateway

Overview
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 10
2.2.4 Bottom
Fig.:Bottom
:Supplyvoltageconnection

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 11
3 Safety
3.1 Intendeduse
TheproductservesasaprotocolconverterbetweenModbus/TCPandEtherCAT.Itcanbe
usedwithvariousPilzproductsaswellasthirdpartyproducts,providedtheysupportthe
documentedpropertiesandrequirements.
}Modbus/TCP
TheGatewaycanbeusedwithproductsthatoperateasconnectionClientduringdata
exchange.Theproductmustsupportatleastoneofthedocumentedfunctioncodes.
}EtherCAT
TheGatewaycanbeusedasapassivesubscriber(Slave)inaEtherCATnetwork.The
basicfunctionsofcommunicationviaEtherCATcorrespondtotheSystemDescription
publishedbytheEtherCATUserGroup.
TheGatewaymaynotbeusedforsafetyrelatedfunctions.
IntendeduseincludesmakingtheelectricalinstallationEMCcompliant.Theproductisde
signedforuseinanindustrialenvironment.Itisnotsuitableforuseinadomesticenviron
ment,asthiscanleadtointerference.
Thefollowingisdeemedimproperuseinparticular:
}Anycomponent,technicalorelectricalmodificationtotheproduct
}Useoftheproductoutsidetheareasdescribedinthismanual
}Useoftheproductoutsidethetechnicaldetails(seechapterentitled"TechnicalDe
tails")
3.1.1 Electromagneticcompatibility
Toensureelectromagneticcompatibilitythecorrectproceduresmustbecarriedoutduring
installation.
Adeviceiselectromagneticallycompatibleif:
}Itfunctionswithouterrorinagivenelectromagneticenvironment
}Itdoesnotadverselyaffectitsownenvironment.
Electromagneticinterferencecanreachthedevicesthrough:
}Fields
}Powersupplies
}Earthcabling
}Busconnections
}Interfaces
}Inputandoutputcables
Theinterferencecanbetransferredfromtheproducer(source)tothereceiver(interference
sink)viathecouplingroutes.
Interferencereachestheinterferencesink(e.g.thecontrolsystemdevices)invariousways:

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 12
}DCcoupling:
DCcouplingoccursifthesourceandsinkofinterferencehavecommoncableconnec
tions.Thecommoncablepresentscomplexresistances,inducingpotentialdifferences.
Typicalsourcesofinterferenceareswitches/relays,runningmotorsorvaryingpoten
tialsforothersystemsonthesamepowersupply.
}Capacitive(electrical)coupling:
Adifferentpotentialbetweenthesourceandinterferencesink(e.g.twocables)creates
anelectricalfield.Couplingisproportionaltotherateofvoltagechange.
Typicalsourcesofinterferencearecontactors,staticdischarge,parallelsignalcables.
}Inductive(magnetic)coupling:
Alivecableproducesamagneticfieldwhichalsosurroundsadjacentcables.Interfer
encevoltageisinduced.Couplingisproportionaltotherateofcurrentchange.
Typicalsourcesofinterferencearemainscablesrunninginparallel,livecables,high
frequencycables,inductors,transformers,motors.
}Electromagneticcoupling:
Acablecanemitasignalasaradiowave.Thiswaveisthenpickedupbyanother
cable.
Typicalsourcesofinterferencearetransmitterssuchasradios,sparksfromspark
plugs,weldingequipment,etc.
NOTICE
PowerfulHFtransmittersshouldonlybeoperatedatadistanceofmore
than0.6m.
}Staticdischarge:
Staticdischargeoccurswherethereareveryhighdifferencesinpotentialbetweentwo
points.Ifthetwopointsarebroughtclosertogetherorifthepotentialdifferenceisin
creased,dischargescanoccurintheairgaps.
Typicalsourcesofinterferencearepeoplewhoarestaticallychargedfromasynthetic
carpet,forexample.
3.1.1.1 Connectingtheearthcables
Pleasenote:
}Aconductorcrosssectionofatleast2.5mm2shouldbeusedfortheconnectiontothe
centralearthbar.Connectionsshouldbekeptasshortaspossible.
}Connectionstotheearthbarshouldalwaysbeinstarform.
}Connecttogetherthe0Vconnectionsonallthe24Vpowersuppliesandearththe0V
mainsatasinglepoint,orensurethatmeasuresareinplacetomonitorforearthfaults.
Earthedsupplyvoltagesofferthebestnoiseimmunity.
}Theconnectionofthe0Vsupplytothecentralearthbarorearthfaultmonitormustbe
inaccordancewithrelevantnationalregulations(suchasEN602041,NFPA79:177,
NEC:Article250).
}Connectionsshouldbeprotectedfromcorrosion.

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 13
}Flexibleearthingstrapsshouldbeusedonmovingearthparts(e.g.machineparts,
gates).Ensuretheseearthingstrapsareasshortandwideaspossible.
3.1.1.2 Cablerouting
Itispossibletodifferentiatebetweencablesaccordingtotheirfunction.The
followinggroupsexist:
}Group1:DataandsupplylinesforDCvoltagesbelow60VandACvoltagesbelow25
V
}Group2:DataandsupplylinesforDCvoltagesfrom60Vto400VandACvoltages
from25Vto400V.
}Group3:Supplylinesabove400V
Cablinginsidebuildings:
}Thecablegroupslistedaboveshouldbelaidseparately.
}Cablesofthesamegroupcanbelaidwithinthesamecableduct.
}Cablesfromgroup1andgroup2shouldbelaidinseparategroupsorincableducts
whichareatleast10cmapart.
}Cablesfromgroup1andgroup3shouldbelaidinseparategroupsorincableducts
whichareatleast50cmapart.
}Dataandsignallinesshouldbelaidascloseaspossibletoanearthedsurface.
Cablingtoopenairsystems:
}Asfaraspossibleusemetalconduits.Theseshouldbeelectricallyconnectedand
earthed.
}Ensurethereissufficientprotectionagainstlightningbyusingmetalconduitsearthedat
bothends,orconcretecableductswithreinforcementsconnectedacrossthejoints.
3.1.1.3 Equipotentialbonding
Potentialdifferencescanoccurifthedevicesareconnectedtodifferentearthorground
connections.Evencableshieldsthatareconnectedateitherendandhavedifferentearth
connectionscancausepotentialdifferences.Inordertoavoidinterference,equipotential
bondingcablesmustbeinstalled.
Indoingsoyoumustensurethefollowing:
}Selectalowimpedanceequipotentialbondingcable.
}Selectthefollowingasstandardvaluesforthecrosssectionoftheequipotentialbond
ingcables:
– 16mm2forequipotentialbondingcableupto200minlength
– 25mm2forequipotentialbondingcableover200minlength
}Ifthecontrolsystemdevicesareconnectedwithshieldedsignalcableswhichare
earthedateitherend,theimpedanceiscalculatedasfollows:
– Impedanceequipotentialbondingcable=10%ofshieldimpedance.
}Usecopperorgalvanisedsteelequipotentialbondingcable.

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 14
}Connectequipotentialbondingcablestotheearthbaroveraswideasurfaceareaas
possible.
}Asshortadistanceaspossibleshouldbekeptbetweentheequipotentialbondingcable
andsignalcable.
3.1.1.4 Shielding
Interferencecurrentsmustbedivertedtocableshieldsviashieldbars.
Indoingsoyoumustensurethefollowing:
}Connecttheshieldswithlowimpedancetotheshieldbarorearthbar.
}Usecableswithbraidedscreening,withaminimumcoverareaof80%.
}Whenlayingcableswithoutequipotentialbondingorusingfoilshields:Connectthe
shieldatoneend.
}Ifpossible,usemetalormetallisedplugstoconnectcablesforserialdatatransfer.Al
waysrefertotheregulationsrelatingtothefieldbussystems.
}Iftheshieldisnottobeconnectedattheendofthecable,itmusthavenoconnection
totheconnectorhousing.
}Iftheshieldistobeconnected,connectittotheshieldbaratthepointwherethecable
entersthecabinet,withoutmakingabreakinthecable.Usemetalcableclampswhich
covertheshieldoverawidesurfacearea.Routetheshieldasfarastheunits,butdo
notconnectittotheunits.
Digitalinputsandoutputsdonotneedshieldedcables.
However,iftheconnectioncableshaveashield,itshouldbeconnectedatoneend.
Analogueinputsandtheincrementalencoderinputsonspeedmonitorsshouldalwaysbe
connectedusingshieldedcables.
3.1.1.5 Lightinginthecontrolcabinet
Uselowinterferencepanellightingforinsidethecontrolcabinet.

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 15
3.1.1.6 TestingtheEMCcomplianceofaninstallation
YoucanusethelistbelowtocheckthattheinstallationoftheGatewayisEMCcompliant.
Check Measures Done
Arethereareaswithahigh
probabilityofinterference?
(e.g.computersrunning,
processcontrolareas,dis
tributioncabinets,cable
casing,frequencyconvert
ers,handheldradiosetc.).
EMCprotectionintheseareasshouldbeplanned
withparticularcare.
Areareaswherecom
putersarerunningor
areassuchasprocess
controlroomssufficiently
shieldedfromelectromag
neticcoupling?
Ifnecessaryshieldthewholearea.
Doesthecablelayouttake
intoaccounttheprinciples
ofEMCcompliance?
Someimportantpoints:Laycablesclosetoearth,
keepclearofotherelectricalequipment,keep
cablesinductsseparatefromotherpartsofthe
installation,keepcablesasshortaspossible,
avoidmultiplecrossovers.
Isthesupplyvoltagefree
ofinterference?
Supplieswithinterferencevoltagesshouldbefit
tedwithamainsfilter.
EMCcharacteristicsofin
dividualunits/allunits
testedonceinstalled?
TestEMCcharacteristicsunderoperatingcondi
tions,e.g.whilehandheldradiosareinuse,or
HFfrequencygeneratorsarecloseby.Teststatic
dischargewithoperatingpersonnel,testmutual
interferencebetweenunitsunderdifferentoperat
ingconditions.
Earthedpartsconnected
correctly?
Theconnectionsbetweentheunits,rackingbars,
earthconductorsandshieldbarsareimportant.
Inactivemetalpartsshouldbeconnectedovera
widesurfaceareaandearthedatacentralpoint;
withinsulatedmetal:Removeinsulationoruse
specialcontactfixings;protecttheconnection
fromcorrosion;connectthecabinetdoorstothe
bodyofthecabinetusingearthingstraps.
Cablegroupslaidsepar
ately?
Separatecablesintogroups.Supplyandsignal
leadsshouldbelaidseparately.
Aretheshieldsconnected
correctly?
Useshieldedcablesforanalogueanddataleads;
usemetallicplugs;connectcableshieldstoshield
baratpointofentrytocabinet;connectcable
shieldsoverawidesurfaceareaandwithlowim
pedance.
Equipotentialbondingcar
riedout?
Iftheinstallationextendsoverawidearea:lay
equipotentialbondingcable.
Areinductiveloads
switched?
Sufficientfuseprotectionshouldbeusedwithin
ductiveloads
24VDCpowersupply? PowersuppliesmustconformtoEN
60742:9/1995,EN609501:2006/A11:2009orEN
50178:10/97.

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 16
3.2 Safetyregulations
3.2.1 Useofqualifiedpersonnel
Theproductsmayonlybeassembled,installed,programmed,commissioned,operated,
maintainedanddecommissionedbycompetentpersons.
Acompetentpersonissomeonewho,becauseoftheirtraining,experienceandcurrentpro
fessionalactivity,hasthespecialistknowledgerequiredtotest,assessandoperatethe
workequipment,devices,systems,plantandmachineryinaccordancewiththegeneral
standardsandguidelinesforsafetytechnology.
Itisthecompany’sresponsibilityonlytoemploypersonnelwho:
}Arefamiliarwiththebasicregulationsconcerninghealthandsafety/accidentpreven
tion
}Havereadandunderstoodtheinformationprovidedinthisdescriptionunder"Safety"
}Andhaveagoodknowledgeofthegenericandspecialiststandardsapplicabletothe
specificapplication.
3.2.2 Warrantyandliability
Allclaimstowarrantyandliabilitywillberenderedinvalidif
}Theproductwasusedcontrarytothepurposeforwhichitisintended
}Damagecanbeattributedtonothavingfollowedtheguidelinesinthemanual
}Operatingpersonnelarenotsuitablyqualified
}Anytypeofmodificationhasbeenmade(e.g.exchangingcomponentsonthePCB
boards,solderingworketc.).
3.2.3 Disposal
Whendecommissioning,pleasecomplywithlocalregulationsregardingthedisposalof
electronicdevices(e.g.ElectricalandElectronicEquipmentAct).
3.3 Safetyduringinstallation
Theproductrequiresa24VDCsupply.Checkthattheexternalpowersupplyprovidesthis
voltage.
Thetoleranceofthesupplyvoltagemustcomplywiththetechnicaldetails.Safeoperation
cannotbeguaranteedoutsidethisrange.
Protecttheexternalpowersupplybyfittingafusebetweentheexternalpowersupplyand
theproduct.Thesizeofthefusewilldependonthespecificationoftheexternalpowersup
ply,theconductorcrosssectionandonlocalregulations.

Safety
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 17
WARNING!
Riskofelectrocution!
Safeelectricalisolationmustbeensuredfortheexternalpowersupplythat
generatesthesupplyvoltage.Failuretodosocouldresultinelectricshock.
ThepowersuppliesmustcomplywithEN609501:2006/A11:2009,EN
6155826:11/1997.
WARNING!
Riskofelectrocution!
Whenvoltageisapplied,contactwithlivecomponentscouldresultinseri
ousorevenfatalinjuryfromanelectricshock.

Functiondescription
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 18
4 Functiondescription
4.1 Operation
TheGateway
}operatesasaprotocolconverterbetweenModbus/TCPandEtherCAT,
}operatesontheModbus/TCPsideasconnectionServerandontheEtherCATsideas
Slave,
}UsesanLEDtoindicatewhetherthereisdatatrafficviatheconnection
}UsesanLEDtoindicatetheinterfaceusedforthisdatatraffic
}IftheconnectiontoEtherCATortoModbus/TCPisnolongeravailable,thepayloadis
retainedwiththecurrentvalues
}isexclusivelydesignedforexchangingnonsafetyrelateddata
TheGatewayisinterposedinthedataflowbetweentheconnecteddevices.
Fig.:Protocolconversion,Modbus/TCPtoEtherCAT
}SignalpathfromEtherCATMastertoModbus/TCPinterface
EtherCATMaster >EtherCATinputX1ontheGateway >Protocolconversion
>Datainput/outputModbus/TCPinterface >Modbus/TCP
}SignalpathfromModbus/TCPenabledproducttoEtherCATMaster:
Modbus/TCP >Datainput/outputModbus/TCPinterface >Protocolconversion
>EtherCAToutputX2ontheGateway >EtherCATMaster
4.1.1 Blockdiagram
Modbus/TCP
2x EtherCAT
24 V 0 V
Mapping
Power
Fig.:Blockdiagram

Functiondescription
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 19
4.2 Modbus/TCP
TheGatewaycanmanageamax.of8Modbus/TCPconnections.TheGatewayisalways
theconnectionServer.TheconnectionClientsmaybevariousdevices,e.g.PC,control
system,displayunit.TheycanaccesstheGatewaysimultaneously.
Portnumber"502"intheGatewayissetasthedefaultfordataexchangeviaaModbus/
TCPconnection.
4.2.1 Modbus/TCPdataranges(Serverconnections)
TheproductsupportsthefollowingModbus/TCPdataareas:
Dataarea Modbussyntax Example
Coils(Bit)
0x00000…0x65535
[read/write]
0x[xxxxx] 0x00031
DiscreteInputs(Bit)
1x00000…1x65535
[readonly]
1x[xxxxx] 1x08193
InputRegister(Wort/16Bits)
3x00000…3x65535
[readonly]
3x[xxxxx] 3x00002
HoldingRegister(Wort/16
Bits)
4x00000…4x65535
[read/write]
4x[xxxxx] 4x00805
Modbus/TCPdataareas
INFORMATION
AddressingforPilzsystemsstartsat"0".Ondevicesfromothermanufactur
ers,addressingmaystartat"1".
Pleaserefertotheoperatingmanualprovidedbytherelevantmanufacturer.
4.2.2 Datatransferlimits
Thistablecontainsthemaximumdatalengthssupportedpertelegram:
Datatransfer
Max.datalengthpertele
gram
Readdata(Bit) FC01(ReadCoils) 1…2000
FC02(ReadDiscreteIn
puts)
Readdata(Word) FC03(ReadHoldingRe
gisters)
1…125
FC04(ReadInputRegister)

Functiondescription
OperatingManualPSSnetGW1MODEtherCAT
1002692EN03 20
Datatransfer
Max.datalengthpertele
gram
Writedata(Bit) FC05(WriteSingleCoil) 1Bit
FC15(WriteMultipleCoils) 1…1968
Writedata(Word) FC06(WriteSingleRe
gister)
1Word
FC16(WriteMultipleRe
gisters)
1…123Words
Readandwritedata(Word) FC23(Read/WriteMultiple
Registers)
Read1…125Words
Write1…121Words
Datatransferlimits
INFORMATION
Theremaybesomerestrictionsindatalength,dependingonthedevicethat
isused.Pleaserefertotheinformationstatedintheoperatingmanualofthe
relevantunit.
4.2.3 Functioncodes(Clientconnections)
TheconnectionClientcanaccesstheGateway'sdataareasusingthefollowingfunction
codes(FC):
Dataarea Modbussyntax Example
FC01 ReadCoils TheconnectionClientreads
bitdatafromtheconnection
Server,
datalength=1Bit,content,
content:input/outputdata
(datareceivedfrom0x)
FC02 ReadDiscreteInput TheconnectionClientreads
bitdatafromtheconnection
Server,
datalength=1Bit,content,
content:input/outputdata
(datareceivedfrom1x)
FC03 ReadHoldingRegister TheconnectionClientreads
worddatafromtheconnec
tionServer,
datalength=1Word,
content:diagnosticword
(datareceivedfrom4x)
FC04 ReadInputRegister TheconnectionClientreads
worddatafromtheconnec
tionServer,
datalength=1Word,
content:diagnosticword
(datareceivedfrom3x)