CONNECTION
Measuringcentres–M
320,MC330,MC350&MC350H ‐ User’sManual 1
Digital input module with two digital inputs
enablesreceptionofimpulsesignals.(MC350,
MC350HandMC330only).
Digital input module with two digital inputs
enablesreceptionofimpulsesignals.(MC350,
MC350HandMC330only).
Digital input module with two digital inputs
enablesreceptionofimpulsesignals.(MC350,
MC350HandMC330only).
Analogue output module with two analogue
outputs(0...20mA), proportionaltomeasured
quantities. (MC350, MC350H with high range
aux.powersupplyonly)
Communicationconnection
Atypeofconnectordependson orderedcommunicationtype. RS232,RS485andM‐Buscommunicationare
equippedwithscrewterminalconnector,ProfibuswithD‐SUB9pinconnector,USBwithUSBstandardBtype
terminalandServiceUSBportwithmini‐Btypeterminal.
WARNING!
WhenconnectingacommunicationconnectoritisnecessarytoassurewhichtypeRS232or
RS485 or M‐Bus communication is used. Otherwise the communication module can be
damagedordestroyed.Seeconnectiondiagramsbelow.
4 Corresponding data are stated on the instrument label, regarding the selected communication.
Connectorterminalsaremarkedonthelabelontheuppersideof the instrument. More detailed
informationoncommunicationisgiveninchapterCommunicationonpage50.
RS232
RS232communicationisintendedfordirectconnectionoftheMeasuringcentretothepersonalcomputer.For
properoperationitisnecessarytoassurethecorrespondingconnectionofindividualterminals(seetableonnext
page).
RS485
RS485 communication is intended for connection of devices to network where several devices with RS485
communicationareconnectedtoacommoncommunicationinterface.WesuggestusingoneoftheISKRA,d.d.
communicationinterfaces!
M‐Bus(MC350andMC350Honly)
M‐BusslaveinterfaceisintendedforconnectiontonetworkwhereM‐Busmasterdeviceispresent.Formore
informationregardingM‐BuspleaserefertoAppendixDonpage68.
Profibus(MC330,MC350andMC350Honly)
ProfibusDP‐V0communicationprotocolissupported.Upto32slavedevicescanbeconfiguredintothesingle
Profibusnetwork.Eachdevicecanbeconfiguredasaslavedeviceprovidingwiderangeofmeasuringdatatothe
Profibusmaster.FormoreinformationregardingProfibuspleaserefertoAppendixConpage63.