Iskra MC320 - Page 7

TABLEOFCONTENTS
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Measuringcentres
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MC320,MC330,MC350&MC350H ‐ User’sManua
l
V
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APPENDIXD:M‐BUS....................................................................................................................................68
COMMUNICATIONSETTINGS.....................................................................................................................................68
COMMANDTELEGRAMS..........................................................................................................................................68
InitializeM‐Bus(SNK_NKE)...........................................................................................................................68
SelectM‐BUSMC350UsingSecondaryAddress(SND_UD)..........................................................................68
TransmitRead‐outDataviaPrimary/SecondaryAddress(REQ_UD2)........................................................68
SetBaudRateviaPrimary/SecondaryAddress(SND_UD)..........................................................................69
SetPrimaryAddressviaPrimary/SecondaryAddress(SND_UD)................................................................69
SetSecondaryAddressviaPrimary/SecondaryAddress(SND_UD)............................................................69
Reset,RestartM‐BUSMC350viaPrimary/SecondaryAddress(SND_UD)..................................................69
M‐BUSTELEGRAMS...............................................................................................................................................69
TotalEnergycounters0,1,2,3.......................................................................................................................69
ActiveTariffnumber......................................................................................................................................69
ActivePowerTotalPt(W).............................................................................................................................70
ReactivePowerTotal(kvar)..........................................................................................................................70
InstantApparentPowerTotal(VA)...............................................................................................................70
PowerFactor:‐:leadinget+:lagging:PF.....................................................................................................70
CurrentTotal(A)............................................................................................................................................70
Systemfrequency(Hz/1000).........................................................................................................................70
ActivePowerinPhase1,2,3(W)...................................................................................................................70
CurrentinPhase1,2,3,Neutral(A)...............................................................................................................71
Voltages(V)...................................................................................................................................................71
APPENDIXE:CALCULATIONS&EQUATIONS.................................................................................................72
CALCULATIONS......................................................................................................................................................72
Definitionsofsymbols...................................................................................................................................72
EQUATIONS..........................................................................................................................................................72
Voltage..........................................................................................................................................................72
Current..........................................................................................................................................................73
Power............................................................................................................................................................73
THD................................................................................................................................................................74
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