Elster A1700 - Reading data

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By pmbt , 6 June, 2016
Forums
General discussion

Hi there,

I'm attempting to read data from the Elster A1700 meter over serial using RS232. For example, if I try and read current values from it, I get various responses like the following:

[12:30:06] <-COM6 <STX>(00445103000000000088190000000000006808010000000000641000000000000044000000000000008440010000000000721405000000000052490200000000)<ETX><CR>

My question is - how is the data encoded? How do I extract meaningful data from this?

Any help would be greatly appreciated

jribenfors

8 years 5 months ago

We've decoded it like this:

00445103000000000088190000000000006808010000000000641000000000000044000000000000008440010000000000721405000000000052490200000000

Split into 16 byte chunks

0044510300000000
0088190000000000
0068080100000000
0064100000000000
0044000000000000
0084400100000000
0072140500000000
0052490200000000

Taking the first chunk as an example
0044510300000000

Split into two byte words

00 44 51 03 00 00 00 00

And reverse the words

00 00 00 00 03 51 44 00

= 3514400

This worked for the few examples we tried.

Danlew2018

4 years 7 months ago

Hi,

Does anyone know how to get the date?

I have the response “46522269900021” which should be “2021-10-29 22:52:46”

I can see the hhmmss (22.52.46), but how do I get the date?

Kurumi

4 years 6 months ago

Hi,

I believe that there is something wrong with your data. The format should be:
YYMMDDhhmmss

BR,
Mikko