Vega VEGAMET 624 - Safety instructions for Ex areas

6
3Networksettings
RS232/Ethernet connection • VEGAMET 391/624/625, VEGASCAN 693, PLICSRADIO C62
30325-EN-130701
3 Network settings
ForinstrumentswithintegratedEthernetinterface,theautomatic
addressingviaDHCPispreset,i.e.theIPaddressmustbeassigned
byaDHCPserver.GenerallytheinstrumentiscontactedviatheHost
name.Asanalternative,itisalsopossibletoenterastaticIPaddr.
withSubnetmaskandoptionalGatewayaddr.
Note:
Thesetting/modicationofthesenetworkparameterswillbeonly
takenover,i.e.becomeeective,afterarestart(interruptionofpower
supplyandrestart).
Enquireofyourresponsiblenetworkadministratorthetypeofad-
dressingwishedinyournetworkand,ifnecessary,furtherspecica-
tions.Thefollowingadjustmentoptionsandparametersareavailable:
Inthismode,allnecessaryparametersareassignedautomaticallyto
thesignalconditioninginstrumentbyaDHCPserveravailableinthe
network.Theseparameters,e.g.theIPaddress,arethusnotknownto
theuser.Whatismore,theycanchangewheneverthepowersupply
isinterrupted.Thatiswhyahostnamemustalsobeused,viawhich
theinstrumentcanbeaddressedinthenetwork.Furtherparameters
suchassubnetmask,gatewayorDNSserveraddressdonothave
tobeenteredwithautomaticaddressing.Everyinstrumentissetto
DHCPatthefactory.
IfnoDHCPserverisavailable(e.g.whenconnectingdirectlytoaPC
viacross-overcable)orautomaticaddressingisnotwanted,theIP
addressesareenteredmanuallyineachinstrument.Yourresponsible
networkadministratorprovidesacorrespondingIPaddresswithsuit-
ablesubnetmask.
ThesubnetmasktogetherwiththeIP-addressdetermineswhich
networksegmenttheinstrumentshouldbelongto.
Agatewayconnectsindividualnetworksegments–datatraccan
thusbeforwardedtodestinationsoutsidethelocalnetworksegment.
Entryofagatewayaddressisonlyrequiredwhenmanuallyassigning
anaddressandforlargenetworks.
WithautomaticaddressingviaDHCP,itisnecessarytoassignahost
namebecausetheIPaddressisgenerallynotknownorcanchange.
Bydefault,thehostnameconsistsoftheserialnumberplus"VEGA-"
infront.Anythingcanbeenteredasahostname,forexamplethe
nameofthemeasurementlooportheplant.Thehostnamemustonly
includelettersandnumberswithoutspaces.Onlythehyphen"-"isal-
lowedasaspecialcharacter.Therstcharactermustbealetter.The
hostnamecanhaveamaximumof16characters.
TheDNSserverisresponsible
forassigningtheIPaddressandthe
hostname.Thisisparticularlyimportantwithautomaticaddressing
becausenetworkdevicesareaccessedviathehostname.Entry
ofaDNSserveraddressisonlyrequiredwithmanualaddressing
Dynamic IP-address
(DHCP)
Static(xed)IPaddress
Subnet mask
Standard gateway
Host name
DNS server