Idea

matt1309 avatar image
matt1309 suggested

Et112 over ethernet (Internet) tcp

Hi Folks,

Not sure if this is the correct section, however I've been looking for energy monitoring solution.

My solar system is in a shed 100m away (lots of digging). I have ethernet for Internet but need Internet so can't use ethernet for rs485 alone and power lines obviously run to the shed. Therefore I needed a way to send load energy meter data to multiplus ii in shed.

I have 100a supply and didn't fancy the added cost of the ethernet supported meter with ct clamp (which I found very painful to even find where to buy in the UK)

I therefore took a risk with the et112 and two rs485 to eth adapter from waveshare (I purchased them on pihut)

They're quite cheap feeling and the Official name is RS485 TO ETH (B).

The setup being one rs485 to eth setup as a client the other as a server.


Et112 rs485 -> RS485 to eth client device in consumer unit - > Internet

-> rs485 to eth server device in shed - > rs485 to usb to raspi/multiplus


Just wanted to share as the rs485 to eth were £20 each so much cheaper than ethernet meter.

It also doesn't require installing custom firmware/drivers ie what some folk seem to have done to get other brand ethernet meters to work ie shelly 3m. Which was more daunting for me to attempt.

Any questions give me a shout

Thanks,

Matt




Energy Meterpower meter
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matt1309 avatar image
matt1309 commented

Still checking latency however seems minimal

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3716rm avatar image
3716rm commented

Hello @matt1309 , did you just use the 2 wire setup for this and what baud to you use? Setup today with a Moxa MGate MB310 but not getting any data from the ET112. Same requirement as you to meter power 200M away.

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matt1309 avatar image
matt1309 commented
Hi @3716rm


I set baud rate equal to 9600, databits 8 parity none, stopbits 1 and flow control None.

I used a 2x waveshare rs485 one as server one as client which i assume is how moxa gate works (just a more premium version). So i wired in ground, 485B and 485A ports.


Just to flag if Mozagate is TCP/IP then you might struggle with 200m, i believe ethernet limit is 100m unless you use some specialized cables.



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