Communicationmodules
OperatingManualCommunicationinterfaces
1002971EN03
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5 Communicationmodules
5.1 Overview
ThecommunicationmoduleontheconfigurablecontrolsystemPNOZmulti2isusedto
} Downloadanduploadtheproject,
} Readthediagnosticwords,
} Readtheerrorstack.
Thefollowingcombinationsarepossible:
} SerialinterfaceRS232
– BaseunitPNOZmB0+PNOZmESRS232
} Ethernetinterfaces
– BaseunitPNOZmB0+PNOZmESETH
5.2 PNOZmESRS232
TheconnectiontotheRS232interfaceofthecommunicationpartnerandthecommunica
tionmodulePNOZmESRS232isestablishedviaanullmodemcable.
Transmissionrate:
19.2kBitwith
} 8bitsofdata
} 1startbit
} 2stopbits
} 1paritybit
} Evenparity
5.3 PNOZmESETH
5.3.1 Introduction
Thischapterdescribesthespecialfeaturesofcommunicationwiththeexpansionmodule
PNOZmESETHviaEthernetandModbus/TCP.AccesstodatafromthePNOZmulti2via
tablesandsegmentsisdescribedinChapterBasics[ 13].
5.3.2 Overview
TheexpansionmodulePNOZmESETHprovidesaninterfacetoEthernet.Viathisinter
face,theconfigurablecontrolsystemPNOZmulti2canbeconnectedviaEthernettocontrol
systemsthatsupportModbus/TCP.Modbus/TCPisdesignedforfastdataexchangeatfield
level.TheexpansionmodulePNOZmESETHisapassiveModbus/TCPsubscriber
(Server).ThebasicfunctionsofcommunicationwithEthernetorModbus/TCPconformto
IEEE802.3.Thecentralcontroller(Client)readsoutputinformationfromtheServersand
writesinputinformationtotheServersaspartofeachcycle.Inadditiontothecyclicalpay
loadtransmission,thePNOZmESETHalsohasdiagnosticfunctions.
TheconnectionsareestablishedviatwoRJ45sockets.