From where to start

By Bhavjinder Singh , 20 June, 2018

Forums

Hi
I have to create android app which will read DLMS based meter data. Pls suggest me from where i can start. Im new in dlms protocol, first i have to prepare the communication between meter and mobile device. I'm not able to create the channel between meter and mobile through optical strobe

Regards
Bhavjinder Singh

Select serial port first

Code is returning select serial port first in toast

Hi,
You need optical head or USB to serial port converter to read your meter. I believe you don't have that installed at the moment.

BR,

Mikko

Im able to read data

Hi..
I'm able to read data, but now problem is how can convert byte array return by meter as a reply to actual data. If class id is 8 then i have to convert byte array to decimal value for datetime.

Im able to read data

Mine problem is to interpret data returned by the meter.

From where to start

Hello,

You should check those:
http://www.gurux.fi/DLMSCOSEMFAQ
http://www.gurux.fi/Gurux.DLMS.Client

Getting data

Hi ..
Pls help me, i got the data in byte array for meter serial number and Clock. But both parameters have data type returned by meter is 'OCTETString' so now how can get the actual value, because for MSN is a ascii value and clock parameter is in decimal.

Scaler unit

how to read Scaler unit of any particular parameter

Reading data

Hi,

Date time is returned in OctectString. You need to convert it to the dateTime format.
GXDLMSClient.ChangeType -method.

Scaler and unit are in attribute index 3 of register object.

BR,
Mikko

Thank you!

Hi Mikko,
First, Thank you!
Im able to get actual meter's datetime. But not able to figure out where is scalar and unit values.

readObject(obj, it);

readObject(obj, it);
if (obj.getObjectType() == ObjectType.CLOCK) {
Object obj1 = GXDLMSClient.changeType((byte[]) obj.getValues()[1], DataType.DATETIME);
Log.i("Datetime", String.valueOf(obj1));
}

is this the right way? to get byte array of response

Reading data

Hi,

If your object is clock it's done automatically.
GXDLMSClock c = new GXDLMSClock();
readObject(obj, 2);

BR,

Mikko

Reading of register

Hi Mikko,
I want to read register parameter just say "Cumulative Energy – kWh" ...
I have initialise GXDLMSRegister("1.0.1.8.0.255"), im getting response from the meter but im getting NONE for the unit.

Reading of register

Hi,

Try to read that with GXDLMSDirector. If the result is the same, your meter is set the unit to NONE.

BR,

Mikko

Failed to recieve reply in given time

hi mikko
Im using GXDLMSDirector to read meter paramter, im getting this reply from meter in the trace:
29/06/2018 12:37:06 PM
<HDLC len="9" >
<TargetAddress Value="1" />
<SourceAddress Value="20" />
<FrameType Value="93" />
<Snrm>
</Snrm>
</HDLC>

29/06/2018 12:37:13 PM
<HDLC len="9" >
<TargetAddress Value="1" />
<SourceAddress Value="20" />
<FrameType Value="53" />
<DisconnectRequest>
</DisconnectRequest>
</HDLC>

Pls help

regards
Bhavjinder

Failed to recieve reply in given time

Hi,

Try to change client address to 10.

BR,
Mikko

Connection is permanently rejected. No reason is given.

Hi Mikko... below is the response im getting :
<HDLC len="9" >
<TargetAddress Value="1" />
<SourceAddress Value="20" />
<FrameType Value="93" />
<Snrm>
</Snrm>
</HDLC>

02/07/2018 12:13:41 PM
<HDLC len="1E" >
<TargetAddress Value="20" />
<SourceAddress Value="1" />
<FrameType Value="73" />
<PDU>
<Ua>
<MaxInfoTX Value="256" />
<MaxInfoRX Value="128" />
<WindowSizeTX Value="1" />
<WindowSizeRX Value="1" />
</Ua>
</PDU>
</HDLC>

02/07/2018 12:13:41 PM
<HDLC len="43" >
<TargetAddress Value="1" />
<SourceAddress Value="20" />
<FrameType Value="10" />
<PDU>
<AssociationRequest>
<ApplicationContextName Value="LN" />
<SenderACSERequirements Value="1" />
<MechanismName Value="Low" />
<CallingAuthentication Value="4142434430303031" />
<InitiateRequest>
<ProposedDlmsVersionNumber Value="06" />
<ProposedConformance>
<ConformanceBit Name="MultipleReferences" />
</ProposedConformance>
<ProposedMaxPduSize Value="FFFF" />
</InitiateRequest>
</AssociationRequest>
</PDU>
</HDLC>

02/07/2018 12:13:41 PM
<HDLC len="2C" >
<TargetAddress Value="20" />
<SourceAddress Value="1" />
<FrameType Value="30" />
<PDU>
<AssociationResponse>
<ApplicationContextName Value="LN" />
<AssociationResult Value="01" />
<ResultSourceDiagnostic>
<ACSEServiceUser Value="01" />
</ResultSourceDiagnostic>
<ConfirmedServiceError>
<Service Value="01" />
<ServiceError>
<Initiate Value="IncompatibleConformance" />
</ServiceError>
</ConfirmedServiceError>
</AssociationResponse>
</PDU>
</HDLC>

Pls. help me...

Regards
Bhavjinder Singh

Connection is permanently rejected. No reason is given.

im using GXDLMSDirector

Scaler unit

Im getting scalar:1, unit:None what does this means.. im reading Instantaneous Frequency

getting error "invalid structure" exception on readObject

if (obj instanceof GXDLMSProfileGeneric) {
try {
readObject((GXDLMSProfileGeneric) obj, 3);
GXReplyData reply_data = new GXReplyData();
byte[][] temp;
temp = mClient.read((GXDLMSProfileGeneric) obj, 2);
readDataBlock(temp, reply_data);
} catch (Exception e) {
e.printStackTrace();
}
}

getting error "invalid structure" exception on readObject

Hi,

Are you reading profile generic or something else? Please, describe the problem better. I can't help if you copy only a few lines from the example.

BR,

Mikko

Im reading profile

Hi Mikko,

Im reading profile FOR INSTANTANEOUS PARAMETERS... first im reading capture object
readObject((GXDLMSProfileGeneric) obj, 3);

but im getting error on the above line as "invalid structure"

getting error "invalid structure" exception on readObject

Hi,

What meter are you trying to read? Can you post reply data from the meter? I can check it.
BR,

Mikko

Hey Mikko,

Hey Mikko,
Mine problem is I dont know how to read profile generic.. below is the code i have write:
try {
//readObject((GXDLMSProfileGeneric) obj, 2);
GXReplyData reply_data = new GXReplyData();
byte[][] temp;
temp = mClient.read((GXDLMSProfileGeneric) obj, 3);
for (byte[] it : temp) {
readDataBlock(temp, reply_data);
}
byte[][] temp1 = mClient.read((GXDLMSProfileGeneric) obj, 2);
for (byte[] it : temp1) {
readDataBlock(temp1, reply_data);
}
} catch (Exception e) {
e.printStackTrace();
}

Pls guide me ...i will be very thankful to you

Regards
Bhavjinder Singh

From where to start

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