Hello,

I will share where my little drama of trying have a inverter data in place without wifi access. Maybe someone can help in some way, maybe this info could help someone with same struggle.

As you already should know, deye inverters work with Solarman platform loggers ( IGEN Tech).

What is usually used, but well I have some places where I dont have wifi so I need another solution.

So I bought 2 LS4G-5, that already have a integrated eSIM, that is supposed work everywhere. When I finally got it I found it just doesnt work, and I tried in different places to check if it was a weak signal problem. SOLARMAN support never could give me a solution or a explanation they just avoid reply to tickets about it.

Then I bought a LSG-3, this work with a SIM CARD. I got a IoT card with a 10years plan to discover it doesn't work as well.

Be aware that all this time and for each step I contacted SOLARMAN support, as their support usually doesnt give much information I need insist, insist, insist.

Finally they said its a APN problem and I should change it to my SIM card APN, and need be done sending a AT command, "AT+YZAPN=", it should be done local, via a RS232 tool, not in DB9 port but internally after disassemble it.  Just to understand how their supports works, each "bold" phrase was different reply.

I never sent AT commands, or communicated with logger by that so I have been a lot searching how I could do it.

I bought a USB to RS232 Converter (PL2303)

And this is logger disassembled:

Wiring connection was done like that:

And ends up like that:

For software I firstly tried Putty but I was not successful with that (maybe because wrong configuration) so I find another one that seems better for me SerialTool that can be find here: https://www.serialtool.com/

For communication you should know right configuration, that I dont know and either Deye or SOLARMAN support couldn't give me yet.

So I tried the most common:

And to be honest I tried many different Baudrates without success, I always get read commands like that:

That from my research could mean that baudrate is wrong.

And Im stuck here at moment, be aware that I dont have much knowledge about it. Probably Im doing something wrong, so all help is welcome! Would be nice that we could gather information enough to make it working and do guide how to do it for other users.

I am one of the developers of SerialTool and I noticed your post and we thank you for the appreciations on our software.
First of all I wanted to ask you first if you have resolved the issue.
Since this modem is not our product, we cannot provide direct support, but I can offer some suggestions.
The manufacturer of the module indicates the transmission speed from 300 to 115200 baud.
Typically, for these modules, you should connect to the serial port and send a series of repeated AT commands.

So, AT + [CR], then AT + [CR], and then again AT + [CR] until you receive an OK response.

At that point, you can send the remaining commands. If AT commands are properly implemented to any AT + [CR] you MUST get an OK as response and you cannot go any further until you'll get to this point.

Please let me know if you made it.


 

Thank you very much for your answer and sorry for this very late reply.

After a long long time asking help to support I ended buying new loggers from manufacturer and they told me the devices I had could only work in India even if they was sold by a big distributor in Europe.

So, you mean send AT + [CR] for all standard baudrate speeds until I got this OK reply? I still have a box full of this loggers, so I could give a try!