Iskra MC320 - M-Bus Telegrams; Total Energy Counters 0,1,2,3; Active Tariff Number; Set Baud Rate Via Primary; Secondary Address (SND_UD)

APPENDIXD:M‐BUS
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Measuringcentres
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MC320,MC330,MC350&MC350H ‐ User’sManua
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9
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SetBaudRateviaPrimary/SecondaryAddress(SND_UD)
ThistelegramenablestosetthedesiredBaudRate.TheM‐BUSMC350confirmsthecorrectreceiptbyACK.If
thetelegramwasnotreceivedcorrectlytheM‐BUSMC350doesnotsendanAcknowledgement.The(ACK)is
sentbytheM‐BUSMC350intheOldBaudRate.AssoonasACKistransmittedtheM‐BUSMeterswitchestothe
baudratenewlyparameterized.IftheMC350nowdoesnotreceiveanewTelegramunderthenewbaudrate
withinaperiodof30–40seconds,itautomaticallyswitchesbacktotheoldbaudrate.Thisisapttopreventthat
afaultysettingofthebaudratemayinterruptcommunication.
SetPrimaryAddressviaPrimary/SecondaryAddress(SND_UD)
ThisTelegramenablestosetanewPrimaryAddress.TheM‐BUSMC350confirmsthecorrectreceiptbyACK.If
thetelegramhasnotbeencorrectlyreceivedtheM‐BUSMC350willnotsendanAcknowledgement.
SetSecondaryAddressviaPrimary/SecondaryAddress(SND_UD)
ThisTelegramenablestosetanewSecondaryAddress.TheM‐BUSMC350confirmsthecorrectreceiptbyACK.
IfthetelegramhasnotbeencorrectlyreceivedtheM‐BUSMC350willnotsendanAcknowledgement.
SecondaryAddress(UD)consistsof:
 IdentificationNumber: 00000000–99999999 8‐digitSecondaryAddressnumber
 Manufacturer’sCode:
7326 2ByteCompanyConstant(Iskra=“7326”)
 VersionNumber: 01–FF 1Byte
 Medium: 02 1ByteConstantElectricity
Reset,RestartM‐BUSMC350viaPrimary/SecondaryAddress(SND_UD)
ThisTelegramresets/restartsM‐BUSMC350.TheM‐BUSMC350confirmscorrectreceiptbyACK.Ifthetelegram
wasnotcorrectlyreceivedtheM‐BUSMC350willnotsendanacknowledgement.
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M‐BusTelegrams
TotalEnergycounters0,1,2,3
Energycounterscouldrepresent:+/‐activeenergy,+/‐reactiveenergyorapparentenergyandoneof4‐thtariff.
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 DIF DIFE DIFE VIF VIFE VIFE VIFE DATA
   xx.xx.xx.xx
T0: 04 none none
T1: 84 10 none
T2: 84 20 none
T3: 84 30 none
T4: 84 80 10
A+:   0n none none none *10
n‐3
Wh
A‐:   8n 3C none none *10
n‐3
Wh
R+:   FB 82 7n none *10
n‐3
varh
R‐:   FB 82 Fn 3C *10
n‐3
varh
App:   FB 84 7n none *10
n‐3
VAh
n‐0…7
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ActiveTariffnumber
Tariffnumberinprogress(1to4)
 DIF DIFE DIFE VIF VIFE VIFE VIFE DATA
01 FF01 xx
DATA:valuerepresentas8‐bitinteger