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Hello, good afternoon. I am new to this topic. But I was able to move on well.
This with a Chesum problem.
My wish is to be able to form hex strings of different orders.
7E A0 14 02 21 03 98 25 BC E6 E6 00 C0 02 C1 00 00 00 01 51 BE 7E
<HDLC len = "13">
<! - Logical address: 1, Physical address: 16 ->
<TargetAddress Value = "90" />
<SourceAddress Value = "1" />
<FrameType Value = "98" />
<PDU>
<GetRequest>
<GetRequestForNextDataBlock>
<! - Priority: High, ServiceClass: Confirmed, Invoke ID: 1 ->
<InvokeIdAndPriority Value = "C1" />
<BlockNumber Value = "00000001" />
</GetRequestForNextDataBlock>
</GetRequest>
</PDU>
</HDLC>
I need to edit <BlockNumber Value = "00000001" /> by 00000002 in the hex string but it brings me the message <! - Invalid data checksum. ->
<!-- Invalid data checksum. -->
<HDLC len="13" >
<!-- Logical address:1, Physical address:16 -->
<TargetAddress Value="90" />
<SourceAddress Value="1" />
<FrameType Value="98" />
<PDU>
<GetRequest>
<GetRequestForNextDataBlock>
<!-- Priority: High, ServiceClass: Confirmed, Invoke ID: 1 -->
<InvokeIdAndPriority Value="C1" />
<BlockNumber Value="00000002" />
</GetRequestForNextDataBlock>
</GetRequest>
</PDU>
</HDLC>
How can I generate my hexadecimal doing the correct chesum ?.
Hi,
Hi,
Let the framework generate the frames and use XML client to only read the data. There are several different things that might affect the generated frames.
What you need to do is something like this:
<GetRequest>
<GetRequestNormal>
<InvokeIdAndPriority Value="C1" />
<AttributeDescriptor>
<ClassId Value="0001" />
<InstanceId Value="00002A0000FF" />
<AttributeId Value="02" />
</AttributeDescriptor>
</GetRequestNormal>
</GetRequest>
Change interface type and OBIS code.
BR,
Mikko
Hi, Kurumi, sorry my english,
Hi, Kurumi, sorry my english, but if i don't misinterpret can i test the XML code using XMLClient?
thank you answer my questions.
Hi,
Hi,
You can use XMLClient to read data from the meter. You define COSEM object (Ex. clock) that you want to read and read it. You can't define what kind of frames the client is sent.
BR,
Mikko