Hi,
I am an amatour and started to fiddle with some automation in my home.
I am trying to integrate my Fan coil unit with Home assistant.
I have installed Elfin-EW11 RS485 Wifi converter and plugged it to my fancoil.
my modbus.yaml looks like:
and in configuration.yaml is line: modbus: !include modbus.yaml
and modbus entitiy inside home assistant returns: unavaliable.
Can you help me understand what am I doing wrong? Any help would be great.
Restrition for new users is one embeded image in post so I put in new post rest of my configurations
Elfin-EW11 Serial settings:
Hello @minoshi,
did you somehow succeded or understood what was wrong. I am looking at a similar table not same manufacturer but it seems same information, so I would like to understand if you have got to a solution.
thansk!
I managed to get communication I needed. For the settings in ew11 i changed port to 8899 and CLI to Serial string, +++, 300. These changes probably doesn’t mattered for my case. It turned out that my problem was a slave adress. On my device I changed default adress to something different. I chose address 16 following instructions from manual and also printed on electric box cover. Changed this with S4 dial. Arrow - 0, 1-down, 2-up.
Turns out that manual is misleading and when i choose this address 16 it is really then an adress 17. I changed my code in HA to slave 17 and type: rtuovertcp to type: tcp and everything works now. Hope it helps.
hello,
thanks a lot for your feedback.
the adressing looks like this, this is my case at least.
But a the same time when everything is set to be slave = 0 it responds to slave 64, so it might be this causing the shift from 16 to 17.
Hi,
thanks for sharing this 
I also have a couple of Midea Fancoils, and thinking of tapping into their Modbus. I have purchased Waveshare RS485 Gateway
When I have time will try to hook it up.
One piece I am still missing is the Modbus register specification. Maybe You could share it?
Does anybody know which RS485 to wifi module will work with this and is available in EU?
Thank you
@marcgpx12 I’ve bought five of these:
working perfectly with Modbus integration/fancoils.
Hello,
I used waveshare wired rs485/tcp PoE but I would likely suppose that the wifi from waveshare works.
the Elfin that @sfortis has suggested is highly reccomended around the web so better go with that maybe.
I would go wired if it is a critical service as air conditioning, just my opinion.
