JABLOTRON AC-116 (Heating Sytem) - MODBUS

[Carsten Madsen]

Hi.

I have this device Jablotro AC-116 heating system with modbus communication.

But it is not standard modbus.

I have attached the documentation in hope that someone is willing to help me, with the communication, to this device.

[Galen Collins]

So everything looks pretty standard to me. What are you having problems with? Most of your work is going to be in masking bits to get the specified values you are interested in.

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[Carsten Madsen]

I'm still learning... :)

I got it working with my ventilation system, but I can't get this to work.

How would the command look like if I would read the room temperatur described here: "1.3.6 Air Temperature" in the .pdf file

Thanks :)

[Lars Jensen]

Hej Carsten

Jeg har en oversigt, der er lidt nemmere.

Hvilken udstyr, prøver du at koble op med.

Hilsen Lars

[Carsten Madsen]

Hej. 

Ja det ser noget nemmere ud.

Jeg har ikke prøvet noget endnu, men det er via en raspberry pi og usb til rs485.

Så enten minimalmodbus eller pymodbus.

Hvad bruger du?

Har du et eksempel jeg kunne få lov at se? 

[Carsten Madsen]

Nu har jeg prøvet med minimalmodbus men har ikke fået det til at virke endnu.

[Lars Jensen]

Har du husket at Wavin bruger Modbus adresse 2, som standard.

Jeg prøver at bruge Red lion's gateway... Det er et Hmi, uden display, men med webserver.

Jeg var gået lidt død i det, men fandt det frem igen, for et par dage siden... Da jeg prøvede at google lidt om det, kom dit spørgsmål op, og så ville jeg lige bidrage med en liste, der var en del nemmere at læse....

Hvis det lykkes dig, så smide lige en besked op, jeg skal nok gøre det samme..

Hilsen Lars

[Steve Thomas]

Hi all,

Very interested in this... But not sure how to get connection... Is ac-116 using modbus over ethernet or just a cat5 socket wired for rs485? Anyone know the pinouts?

I'm thinking of using a pi to interface... As lcd is powered from unit, any ideas if the raspberry pi could also be powered?

Cheers, Steve

[Carsten Madsen]

Hi Steve.

I have a document with the pinout, but it is in danish.

You can power the pi from the unit but you need something like this on the pi

https://www.reichelt.de/Weiteres-Zubehoer/RASP-STROM-PI-2/3/index.html?ACTION=3&GROUPID=6671&ARTICLE=161028

I have not gotten it to work yet, but if you get it to work please share you code.

iam also using a pi.

[Steve Thomas]

Hi,

Thanks for the document and pointer to a board to accept voltage and power the pi. It's the hardware side I'm most unfamiliar with. Telecoms software is my day job so currently learning the hardware.

Just to ensure I'm thinking the same... Rj45 plug on cat5e cable into the ac-116. Either port works with the lcd screen so I'm assuming that also uses modbus. The you split the rj45 into power pair for the strom2 board and where are you connecting the data io pairs?

Thanks,
Steve

[Galen Collins]

All,

I don't know the physical device, but it looks like this is connecting over serial (RS-485), however it appears they are using an RJ-45 connector. The end result is that you would need to connect to the device over serial from the Rasberry PI using Modbus Serial RTU.  If you translate the previous document from Danish -> English it should give you the pinouts that you need.

Galen

Steve

[Carsten Madsen]

I have a USB to rs485 connected to the pi where the rx and tx are connected to from the ac-116.

[Carsten Madsen]

Hi...

Do you have the LCD screen? I think I have read somewhere that you can't use the lcd screen and connect the eg. a pi at the same time.

Programming is not my strong point, so I could really use an eksemple, when you get it to work.

[Claus Helth]

Hi Carsten

Did you ever get this to Work?

Just bought the Wavin AHC 9000 and a Raspberry Pi 3 with a rs485 shield.

I have the wirering in place. An ethernet cable with only the RX/TX A and B cable connected to my shield.

Im using minimalmodbus and python, 

Just want a simple function to work (get a value out from the Slave Heating system)

-----

#!/usr/bin/env python

import minimalmodbus

instrument = minimalmodbus.Instrument('/dev/ttyAMA0', 1) # port name, slave address (in decimal)

print "Start comtest\n";

## Read temperature (PV = ProcessValue) ##

temperature = instrument.read_register(?????, 1) # Registernumber, number of decimals

print "Get tempeture\n";

print "Value: " +  temperature + "\n";

print "End comtest";

-----

BR 

Claus Helth, Denmark

Den torsdag den 18. februar 2016 kl. 13.38.04 UTC+1 skrev Carsten Madsen:

[Jonas Levring]

Hi..

Has anyone had any success communicating with Wavin AHC9000 ?

I have been struggeling quite significantly, but realized that alle the non-standard modbus is a real pain in the ass.

I hope someone had success, and is willing to share.

Br. Jonas

[Claus Skovgaard]

Hej

Jeg har lavet et lille lib til AHC 9000 for et par år siden. Det kan indtil videre kun udlæse data, men det kan jo udvides. Lib'et kører i python på en RPi.

Eksempler på brug (her i Xtend/OpenHAB):

/*
 * Wireless channels (Elements)
 */
var resp = executeCommandLine("/usr/share/openhab/configurations/scripts/ahc9000Func.py 1 2", 10000)
if(resp != null)
{
 var String[] respParts = resp.split(",")
 //logInfo("AHC9000", "Stue " + respParts.get(0))
 Air_Temp_Livingroom.postUpdate(new DecimalType(respParts.get(0)))
 Heating_Bat_Livingroom.postUpdate(new DecimalType(respParts.get(1)).intValue as Number)
}


/*
 * Mode and setpoints (Packed data)
 */
resp = executeCommandLine("/usr/share/openhab/configurations/scripts/ahc9000Func.py 4 2", 10000)
if(resp != null)
{
 var String[] respParts = resp.split(",")
 Heating_Man_Livingroom.postUpdate(new DecimalType(respParts.get(0)))
 //Heating_Hol_Livingroom.postUpdate(new DecimalType(respParts.get(1)))
 //Heating_Stb_Livingroom.postUpdate(new DecimalType(respParts.get(2)))
 Heating_Des_Livingroom.postUpdate(new DecimalType(respParts.get(3)))
 /*if (respParts.get(4) == "True")
 Heating_Sch_Livingroom.postUpdate(ON)
 else
 Heating_Sch_Livingroom.postUpdate(OFF)*/
 //Heating_Mode_Livingroom.postUpdate(respParts.get(5))
}


/*
 * Heating strings mode (Channels)
 */
resp = executeCommandLine("/usr/share/openhab/configurations/scripts/ahc9000Func.py 2 2", 10000)
if(resp != null)
{
 var String[] respParts = resp.split(",")
 if (respParts.get(0) == "True")
 Heating_Flow_Livingroom.postUpdate(ON)
 else
 Heating_Flow_Livingroom.postUpdate(OFF)
}


/*
 * Pump/heater relays (Relay)
 */
var String resp = executeCommandLine("/usr/share/openhab/configurations/scripts/ahc9000Func.py 3 0", 10000)
if(resp != null)
{
 var String[] respParts = resp.split(",")
 if (respParts.get(0) == "07")
 Heating_Pump.postUpdate(ON)
 else
 Heating_Pump.postUpdate(OFF)
}