OEG KS2W solarboiler data

[kwiegers]

I have an OEG solarboiler with KS2W controller and OTGW with Domoticz connected to iSense.

There is software available for this controller:
https://www.oeg.net/nl/software-voor-ks ... -212000097

I wonder if this is standard protocol like V-bus and if it it possible to import the data in Domoticz.

Any ideas?

Kees

[kwiegers]

When I connect USB It says: Soletron heating control

[Derik]

mmm what Hard ware setup do you have..
I am interested in a boiler to..

[kwiegers]

I have raspberyy pi zero, OTGW gateway and domotics with smartmeter.

Wheb I plug in cable, it say it is a modem connection.

Kees

[pgit]

I have a OEG KSW-E controller. Connecting the USB to Windows installs a Seltron (heating controller brand) device as a (USB-to) serial port, but I didn't succeed in making a serial connection (with a terminal emulation program) to it program (yet)....
Has anyone found out what settings (baud rate, flow control etc.) are needed and how to
My ultimate goal is to read the data into Domoticz (offcourse)...

[muurman]

i also have a OEG ksw-e and want to connect to domoticz

[ced2dom]

Hi,

I've a OEG KMS-D which is using the same software as the KS2W.

Does anyboby has found a way to interact with the Box ?

Does anybody has the software and would be willing to share it with me. I would like to monitor the serial traffic on the USB to understand the various command sent

Thanks

[brambo123]

Today I have looked into it with a friend of mine.
After some research, it appears that modbus ascii is being used.
The correct settings are:
- modbus ascii modes
- baud rate 9600
- unit it 0x80
- function code 3 (read holding registers)
I still have to figure out which holding registers belong to which value, but that is a matter of comparing data with information on the screen.

[ced2dom]

Today I have looked into it with a friend of mine.
After some research, it appears that modbus ascii is being used.
The correct settings are:
- modbus ascii modes
- baud rate 9600
- unit it 0x80
- function code 3 (read holding registers)
I still have to figure out which holding registers belong to which value, but that is a matter of comparing data with information on the screen.

Hi brambo123,

Which client are you using to query the box ?

The unit it 0x80 is the device ID ? or the starting register ID ?

[ced2dom]

Hi,

Due to the COVID, i've had a bit of time to look after this.

My Setup is not a KS2W but a KMS-D from OEG. I've figure out some of the holding registers.

I've created a page on github with a small code to read the register and publish it on a MQTT broker.

Here it is : https://github.com/ced2git/oeg_kmsd

Ced

[Rik1980]

How do you connect to PC or RPI?

[mipviwawes]

Hi,

Due to the COVID, i've had a bit of time to look after this.

My Setup is not a KS2W but a KMS-D from OEG. I've figure out some of the holding registers.

I've created a page on github with a small code to read the register and publish it on a MQTT broker.

Here it is : https://github.com/ced2git/oeg_kmsd

Ced

First of all, I owe you a beer.
The sole reason I made an account on this forum, is to thank you for creating the Python code that is found on your Github.

I've altered the code so it fits my needs
(I'm using a signed integer to handle negative values for the sensor T1 which is mounted outside and forward the instrument values to my Homey)

Code: Select all

#!/usr/bin/env python3

oeg_dict = {

	38:"oegT1",
	39:"oegT2",
	40:"oegT3",
	}

address="http://IP-ADDRESS/api/app/com.internet/"

import minimalmodbus
import serial
import csv
import time
import requests

from minimalmodbus import ModbusException
from minimalmodbus import NoResponseError

instrument = minimalmodbus.Instrument('/dev/ttyACM0', 128, minimalmodbus.MODE_ASCII) # port name, slave address (in decimal)
instrument.serial.baudrate = 9600 # Baud
instrument.serial.parity = serial.PARITY_EVEN
instrument.serial.bytesize = 7
instrument.serial.stopbits = 1
instrument.serial.timeout = 0.05	# seconds

localtime=time.asctime(time.localtime(time.time()))
for x in oeg_dict:
	try:
		tempdata = instrument.read_register(x,1,3,signed=True)
		url = (address + oeg_dict[x] + "/" + str(tempdata))
		setvar = requests.get(url)
	except NoResponseError:
		a=1

[passion75]

Dear mipviwawes,

How do you connect the oeg to homey?

I also have a OEG KSW and also want to connect it to my homey

Regards

Pascal Biemans

[bliek79]

hello, i'm new here.

I recently got a boiler with an oeg kws-* I would like to know which otgw you have used to make a connection to the kws-*, and with which cable it is connected.

I'd love to hear from the experts