GXDLMS Director Read DLMS Meter HDLC Packet details

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By suri371994 , 22 February, 2023
Forums
DLMSDirector

when I read the L1 Voltage in the GXDLMS Director, I wonder 2 times the read command packet was observed in Log File.

Please mention the Comments below mention read command and Response from the Device.

Note: In the Director, I was sent 1 time to Read the L1 Voltage.

L1 voltage read:-
17:37:25 Read object type Register index: 3
TX: 7E A0 19 03 41 32 3A BD E6 E6 00 C0 01 C1 00 03 01 00 20 07 00 FF 03 00 5D 9A 7E
17:37:25
RX: 7E A0 16 41 03 52 DD AA E6 E7 00 C4 01 C1 00 02 02 0F 00 16 23 07 3E 7E
17:37:25 Read object type Register index: 2
TX: 7E A0 19 03 41 54 0A BB E6 E6 00 C0 01 C1 00 03 01 00 20 07 00 FF 02 00 85 83 7E
17:37:25
RX: 7E A0 15 41 03 74 24 CB E6 E7 00 C4 01 C1 00 17 46 A1 7A 00 EB A2 7E

Kurumi

3 years 3 months ago

Hi,

You are reading two objects from the meter. At first the scaler and unit first and then the actual value.

BR,

Mikko

suri371994

3 years 3 months ago

As per your reply consider 1st Request packet is Scaler Unit:-

7E //Start Frame
A0 //Des.Address
19 //Length
03 //server address
41 //client address
32 //Instance Value
3A BD //header CRC
E6 // Des. LSAP
E6 //Source LSAP
00 // LLC Quality Reserved for Future.
C0 01 C1
00 03 //OBIS Class Id
01 00 20 07 00 FF //( OBIS Code -- 1.0.32.07.0.255 )
03 //Attribute Id
00 //Instance
5D 9A //CRC ( FCS-16 )
7E //End Frame

2nd Request packet is the Actual value:-

7E //Start Frame
A0 //Des.Address
19 //Length
03 //server address
41 //client address
54 //Instance Value
0A BB //header CRC
E6 // Des. LSAP
E6 //Source LSAP
00 // LLC Quality Reserved for Future.
C0 01 C1
00 03 //OBIS Class Id
01 00 20 07 00 FF //( OBIS Code -- 1.0.32.07.0.255 )
02 //Attribute Id
00 //Instance
85 83 //CRC ( FCS-16 )
7E //End Frame

If I try to read straightaway actual value, I will get any error?

Note: I think Attribute Id will play key importance in the parameter reading, is it? (Scaler unit=3,Actual value=2)

Please mention the Instance of each data packet's importance.

suri371994

3 years 3 months ago

### Receive packet Description.
//Scaler unit response.
7E //Start Frame
A0 //Des.Address
16 41 03 52 DD AA
E6 // Des. LSAP
E7 //Source LSAP Response
00 // LLC Quality Reserved for Future.
C4 01 C1 //
00 02 02 0F 00 16 23
07 3E //CRC ( FCS-16 )
7E //End Frame

//Actual value response.
7E //Start Frame
A0 //Des.Address
15 41 03 74 24 CB
E6 // Des. LSAP
E7 //Source LSAP Response
00 // LLC Quality Reserved for Future.
C4 01 C1 //
00 17
46 A1 7A 00 //Value received ( 20669.000V )
EB A2 ////CRC ( FCS-16 )
7E //End Frame

Also, describe unknow data packet details.