Gree Gateway modbus - Wiser connectivity

[Hamza_nasri]

Dears
I'm trying to connect Modbus gateway from GREE  ME50-00/EG(M) to control HVAC system via Wiser for KNX (LSS100100), but couldn't read the values, it always give me invalid CRC i tried to connect to AS-p and and everything worked normally, 
the data as following : 
baud rate: 9600bps; standard: RS485;  Address = 2 

What is the problem ? 

thanks, 

[Thomas_Rohde]

Hello Hamza_Nasri!
Would it be possible to share a tiny video of your connection and some pictures of your configuration/error message?
This would help to get a better understanding of your problem.

[Hamza_nasri]

Dear @Thomas_Rohde ,

Kindly find attached data requested from your side,

Please let me know for any further clarifications, 

Best Regards,

[Thomas_Rohde]

Hello Hamza_nasri!

Many THANKS for the material you shared. I would propose to enrich the profile with more attributes.
Beside that, I made some adaptations. Within the picture you can identify the differences:

I would propose to try the attached file (I had to zip it as the ending *.json is not accepted).
The changes will not help to find the device when you do a scan.
So you need to add it manually to the list of Modbus devices.
To make a quick test .. I would link a Group-Address to the "Ambient temperature"
in order to see if sensefull values coming.
You can also identify, that something is wrong, in case the Modbus-Device get highlighted in slight red color.
Please have also in mind that sometimes it is needed to shift the register-addresses by "1".

Please let me know 🙂
 

[Erwin-vd-Zwart]

Device scan is not supported by all Modbus devices so this won’t tell you much.

Also starting with a template without testing the register(s) first (and see the correct value as a response) is not the best approach..

You should always start with the read test to determine the connection, registers and possibly if a -1 offset is needed.

With the results of your read test(s) you start building your profile or you end up facing the issues you have now..

[esteve_budia]

Interesting fields in testing 

The answer, validates comunication.. even if the answer is 0.