Relay on/off

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By Usman , 15 July, 2014

I am sending ma smart meter command of getting relay on/off, and each time after success I am getting this response, All values are same except 33rd and 34th values.
First Time:7EA0185100020C5752B3A2E6E700C70122000100090106A0947E
2nd time: 7EA0185100020C5752B3A2E6E700C70126000100090106D6FB7E
3rd time: 7EA0185100020C577487E6E6E700C7014200010009010625307E

Can you explain the exact information in this response and what changing bits are suggesting?

Regards: Usman

Usman

11 years 11 months ago

I am sending this HEX code for Active energy.
7EA03D0002000B511E9A0AE6E600C3011E00010000605000FFB601091F015231023030312E3030312E3030312E3030382E3030302E3030302829034438077E

And getting this response.
7EA025510002000B3056C5E6E700C7011A000100090E02283030303031382E323929032E04A57E

Can you tell that where in this packet lies OBIS code?
Can you tell me which values contain information of Energy?
And How can I know that after how many digits lie the info of OBIS code, keeping in mind that HEX frame size is variable?

Kurumi

11 years 10 months ago

Hi,

All values are not same. Packet ID value is changing and this caused that CRC is changed at the end of packet. Actual data is same in all packets.

7EA03D0002000B511E9A0A //HDLC frame.
E6E600 LLC bytes.
C3011E
0001 // class ID
0000605000FF // OBIS Code
B6 //Method ID
01091F0 //Octet string tag

15231023030312E3030312E3030312E3030382E3030302E30303028290344 //Data

38077E //CRC and end of HDLC frame tag.

7EA025510002000B3056C5 //HDLC frame.
E6E700//LLC bytes.
C7011A000100 //Action response and invoke ID.
090E //Octet string tag
02283030303031382E323929032E //Data
04A57E //CRC and end of HDLC frame tag.

I hope this helps. You should check our Open Source solution from github.
You do not want to spend half year to make this work. :-)

BR,

Mikko

Usman

11 years 10 months ago

Thnxxxxxx Mikko, It really helped me alot... I was desperately waiting for ur answer.

BR.
Usman