Read meter register via TCP/IP

By mishelin , 20 May, 2020

Forums

Hi!
I'm quite new with java and I'd like to ask what should I write after connecting server to get value from specified register. I mean the active energy with address: 1.1.1.8.0.255. I'd like to write a simple application which connect to tcp server and get value of specified register. When I try to read port with standard "read" command I'm getting something like this:

/ABB5\@V4.50
P0(00459594)`1-1:0.9.1(16:45:06)-1-1:0.9.2(20-05-12)*1-1:C.1.0(459594)W1-1:32.7.0(60.9*V)~1-1:52.7.0(61.0*V)p1-1:72.7.0(61.1*V)s1-1:31.7.0(0.008*A)]1-1:51.7.0(0.007*A)T1-1:71.7.0(0.007*A)V/ABB5\@V4.50
P0(00459594)`1-1:C.1.0(459594)W1-1:0.9.1(16:45:26)/1-1:0.9.2(20-05-12)*P.01(1200512161500)(00)(15)(6)(1-1:1.9)(kWh)(1-1:2.9)(kWh)(1-1:5.9)(kvarh)(1-1:6.9)(kvarh)(1-1:7.9)(kvarh)(1-1:8.9)(kvarh)
...
1-1:C.1.0(459594)
1-1:0.9.1(16:48:36)
1-1:0.9.2(20-05-12)
1-1:0.2.2(00000823)
1-1:1.8.0(00089.302*kWh)
1-1:1.8.0*04(00089.028*kWh)
1-1:1.8.0*03(00088.324*kWh)
1-1:1.8.0*02(00087.544*kWh)
1-1:1.8.0*01(00086.752*kWh)
1-1:1.8.0*12(00086.092*kWh)
1-1:1.8.1(00018.240*kWh)
1-1:1.8.1*04(00018.199*kWh)
1-1:1.8.1*03(00018.078*kWh)
1-1:1.8.1*02(00017.932*kWh)
1-1:1.8.1*01(00017.722*kWh)
1-1:1.8.1*12(00017.605*kWh)
1-1:1.8.2(00010.716*kWh)
1-1:1.8.2*04(00010.696*kWh)
1-1:1.8.2*03(00010.624*kWh)
1-1:1.8.2*02(00010.511*kWh)
1-1:1.8.2*01(00010.408*kWh)
...

Hi,

This is IEC 62056-21 readout. There is an OBIS code that describes data and after that is value.
https://www.gurux.fi/DLMSCOSEMFAQ

The easiest way to start is if you parse this readout and find data from there.
It's a good option if you don't need to write anything. Writing is more complex. You need to generate the seed, etc.

BR,
Mikko

Parsing whole readout takes

Reading whole readout takes about 10 minutes, but I'd like to read specified register to save time instead of waiting. I guess I should send a binary frame? There's no simple solution with few lines?

Hi,

I don't know the model of your meter but there are some differences between IEC 62056-21 meters. I don't know is your meter using the checksum, etc.

This might help you. It's how to connect to the Elster meter. You are reading ABB meter and I can't remember how the password is counted in ABB.
https://www.gurux.fi/node/5415

I believe that you can't read your meter with just a few lines of code. If you want to make it easy, get readout and parse the data.

BR,
Mikko

Your link gave me some advice

Your link gave me some advice, but I have question how to add <ACK> to the message? The initiational message was read correctly but I have problem implementing <ACK> <STX> etc. like ASCII code [0x6] - ack.

This working for initiation:

OutputStream out = socket.getOutputStream();
String test = "/?!\r\n";
byte[] xd = test.getBytes("ASCII");
out.write(xd);

But when I try to send the next message meter doesn't recognize it:
String test2 = (char)0x6 + "051\r\n";
byte[] xd2 = test2.getBytes("ASCII");
out.write(xd2);

I've managed to solve it I

I've managed to solve it I guess but meter sends me in respond NAK flag and I don't know why. Here in the picture You can se the part of the code when request with type of message selected (051). In the output are ascii value od characters and under them are converted to string text.

Image