Modbus comms with (Deye) inverter

[thomas37]

I tried pin 7, 8 and also 1,2 but without any results with read function, You mean pin 3, 4?

 

[houseofancients]

 

[thomas37]

But I have these connectors with Modebus, see picture And BMS is connected to battery.

 

[houseofancients]

But I have these connectors with Modebus, see picture And BMS is connected to battery.

View attachment 196359

That port should only be used for an external meter, that replaced the ct's

You should either make a custom split utp connector, or use a port splitter

SolarAssistant

solar-assistant.io

 

[thomas37]

So as I understand I need this splitter https://solar-assistant.io/shop/products/deye_rj45_split

 

[thomas37]

But I have not SolarAssistant system but I have home smart system https://taphome.com/en/support/41123985

 

[houseofancients]

So as I understand I need this splitter https://solar-assistant.io/shop/products/deye_rj45_split

Not perse..
You can also crimp a custom utp plug with 2 cat 5 wires, or alternatively , order utp splitter locally ( what I did)

 

[Ivreo]

Yes of course,

Could you indicate if you found any differences?

According to Deye, you should be able to control all inverter settings via modbus.

Hello,

Could you share the newest version of the DEYE Modbus RTU protocol?

Thanks a lot.

 

[thomas37]

Not perse..
You can also crimp a custom utp plug with 2 cat 5 wires, or alternatively , order utp splitter locally ( what I did)

Thanks a lot

 

[HonzaS]

Cheers,

@festr, lets try study modbus map from me, which I obtain directly from deye support. The datasheet was tranlated by deepL. Modbus map is for 3phase Hybrid LV inverters, but maybe usable for HV models.

Others: Maximum sell power is possible driving by register 340 on 3phase Hybrid. But I don't know, if you do some massive writes into inverter and the FLASH memory will be happy next year.

Have anyone some information about massive Modbus writes and impact to lifetime? Maybe storage is RAM with capacitor or battery backup, then it is right. Otherwise I will be scared.

 

[strezitom]

@HonzaS Thanks!
Too bad REG 141 description is a total mess. I think it represents System Work mode.
I'd be interested switching between Zero Export to Load and Zero Export to CT by modbus command.

 

[strezitom]

Found it and verified regWrite() with Deye Cloud Read of System Work Mode-1 Page for 12k 3f model.
System Work Mode = REG 142
0 : Solar Sell
1: Zero Export to Load
2: Zero Export to Ct

 

[jacobm]

Hello,

I have the same problem as you because modbus table from Deye is in bad English translation.
I bought this RS 485 converter and with help from my colleague who understands modbus better then me we find some useful data.
Converter: USR-TCP232-410s RS232 / RS485 Serial to Ethernet Adapter/IP Device Server Ethernet Converter Support DHCP/DNS
Table:

Modbus addres DEYE= 1;port 502
ADDRESS	REGISTER MEANING	UNIT	DESCRIPTION
598	U GRID L1	V	Napetost omrežja faza 1
599	U GRID L2	V	Napetost omrežja faza 2
600	U GRID L3	V	Napetost omrežja faza 3
604	P GRID LD L1	W	Moč na tokovnem transformatorju v inverterju faza 1
605	P GRID LD L2	W	Moč na tokovnem transformatorju v inverterju faza 2
606	P GRID LD L3	W	Moč na tokovnem transformatorju v inverterju faza 3
607	P GRID LD TOTAL	W	Skupna moč s tokovnih transformatorjev v inverterju
616	P GRID CT L1	W	Moč na tokovnem transformatorju zunaj inverterja faza 1
617	P GRID CT L2	W	Moč na tokovnem transformatorju zunaj inverterja faza 2
618	P GRID CT L3	W	Moč na tokovnem transformatorju zunaj inverterja faza 3
619	P GRID CT TOTAL	W	Skupna moč s tokovnih transformatorjev zunaj inverterja
627	U BACKUP LOAD L1	V	Napetost iz razsmernika faza 1
628	U BACKUP LOAD L2	V	Napetost iz razsmernika faza 2
629	U BACKUP LOAD L3	V	Napetost iz razsmernika faza 3
651	P BACKUP LOAD L1	W	Moč na razsmerniku faza 1
652	P BACKUP LOAD L2	W	Moč na razsmerniku faza 2
653	P BACKUP LOAD L3	W	Moč na razsmerniku faza 3
212	BATT CHARGE LIMIT CURRENT	A	Omejetev moči polnenja baterije
213	BATT DISCHARGE LIMIT CURRENT	A	Omejetev moči praznenja baterije
214	BATT DIS/CHARGE PERCENTAGE	%	Status napolnjenosti baterije
215	U BATT	V	Napetost baterije
216	I BATT (+/-)	A	Tok polnjenja/praznenja baterije
672	P PV1 (string 1)	W	Moč fotovoltaičnih modulov string 1
673	P PV2 (string 2)	W	Moč fotovoltaičnih modulov string 2
676	U PV1	V	Napetost fotovoltaičnih modulov string 1
677	I PV1	A	Tok fotovoltaičnih modulov string 1
678	U PV2	V	Napetost fotovoltaičnih modulov string 2
679	I PV2	A	Tok fotovoltaičnih modulov string 2

Description is in my language (Slovenian) everything else I write in English.

If someone read's more data please complete table.

This table is for Deye 12K-SG04LP3 (on modbus port pin 7 and 8)

Kind regards. Peter

Hi,
Have you tried the Wifi/RS232 port ?
Where is the modbus port? I manual I can find a port called RS485/CAN is that the one?
Br. Jacob

 

[Hubal2689]

I cannot find the Total Panel Power registry number