Help needed! 2x Waveshare RS485 to PoE Ethernet from Solis inverter to Eastron

[Alex12358795]

Hi all,

I have been at it for days and would really appreciate any support you can give...

Waveshare: RS485 to PoE Ethernet upgraded to v1.5
Inverter: S6-EH3P10K-H
Battery: BYD
Datalogger: S2-WL-ST
Smart meter: Eastron SDM630

The distance between the inverter and the Eastron smart meter is +60 meters so I convinced the solar installers to give the Waveshare a try to go via ethernet. Its "working" but I still get random MET_Comm_FAIL(2011) errors which makes the battery act weird and then start discharging 8kw because the Eastron thinks the load is 10kw, which isnt the case...so I manually put the battery on standby.

For now we dont want to achieve anything more robust like connecting directly to HA, this is the dream... For now a simple connection between the inverter and the Eastron and have everything stable working.

Before I hand in the towel and start digging 60 meters with a direct connection I am hoping there is a simple solution...

[alienatedsec]

What is set in "more advanced settings"?

[Alex12358795]

Thank you @alienatedsec

Never touched the advanced one see below:

[alienatedsec]

Try changing Transfer Protocol from None to Modbus TCP protocol.

If the above is not making things better or needs to be at None, Max interval can be increased to 3ms.

[Alex12358795]

I change both? This is what I did and restarted, no data is being sent.
Max internal I changed to 2 and it removed the alarm I had for 3 hours...might be coincidence...

[alienatedsec]

It says that smaller is better for max interval so if your cable and network allows, reduce even to 1ms.

[alienatedsec]

Yes both need changing at the same time.

[Alex12358795]

I changed both to Modbus TCP protocol and got 0 - 0 data so I assume this is not the way to go?

Changed it back got data again but my ports are interesting now...but I am still getting data

If I change to 1ms I get this:

[alienatedsec]

Just noticed. The TCP Server you can try setting its Modbus Gateway Type as Multi-Host non storage type.

I don't see what is connected where so some diagram would be useful.

[Alex12358795]

Done!

Making the diagram now

[Alex12358795]

Wired like this:

[alienatedsec]

Done!

Making the diagram now

Considering your diagram, the above settings should be ok now.

You could increase the waiting time if you still have disconnects.

I would also constantly ping your TCP Server to recognise any delays on the network.

[Alex12358795]

You could increase the waiting time if you still have disconnects.

I would also constantly ping your TCP Server to recognise any delays on the network.

What would be a good number in terms of waiting time?
In case the client and server is reversed in the diagram (I dont think so) will it make a difference?
Constantly ping the TCP server? How would I do that?

Thank you! - will monitor and see how it goes and revert back here!

P.S. With my diagram can I later achieve what you did in this github? I want to integrate into HA but also control my BYD battery so it doesn't discharge when I charge my electric car

[alienatedsec]

You could increase the waiting time if you still have disconnects.

I would also constantly ping your TCP Server to recognise any delays on the network.

What would be a good number in terms of waiting time?

You need to experiment based on delays on your network.

In case the client and server is reversed in the diagram (I dont think so) will it make a difference?

It will not work. This is the right setup.

Constantly ping the TCP server? How would I do that?

Run CMD on your machine and execute ping ip of TCP Server -t

Thank you! - will monitor and see how it goes and revert back here!

P.S. With my diagram can I later achieve what you did in this github? I want to integrate into HA but also control my BYD battery so it doesn't discharge when I charge my electric car

Yes. Very possible. I have the same to prevent discharging my Puredrive batteries.

[Alex12358795]

The good news is that the MET_Comm_FAIL(2011) hasnt returned since your help with the settings, big big big thank you! :)

The bad news is that a new error came up, which I assume is something our installer has to fix, UN-G-F01(1013) has come up 3x times.

Not sure if anyone has experience with this? Everything also looked correctly until I started to charge our EV at 4kw just now, everything shot up and 13kw is now being used so I had to put manually the battery on standby because the real usage should be 4-6kw max not 13kw. Could there be an issue with the installation of the CT clamps feeding data into the Eastron?

After I put the battery on standby

In case the client and server is reversed in the diagram (I dont think so) will it make a difference?

It will not work. This is the right setup.

I dont need to confirm by removing power etc where what sits because I am getting data and the MET_Comm_FAIL(2011) has dissapeared? eg. it wouldnt work if it was the other way around?

Thank you! - will monitor and see how it goes and revert back here!
P.S. With my diagram can I later achieve what you did in this github? I want to integrate into HA but also control my BYD battery so it doesn't discharge when I charge my electric car

Yes. Very possible. I have the same to prevent discharging my Puredrive batteries.

After everything is stable, how would I achieve this in my situation? Follow your guide exactly as is? I am/was using HA & EVCC before we upgraded the solar, inverter and added the battery this week.

[Alex12358795]

Update, still get the MET_COMM FAIL errors...

Ran the pings for a long time even when there was an alarm

Ping statistics for 192.168.178.111:
Packets: Sent = 810, Received = 810, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 2ms, Maximum = 143ms, Average = 12ms

Ping statistics for 192.168.178.112:
Packets: Sent = 818, Received = 818, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 2ms, Maximum = 117ms, Average = 12ms

Is it the maximums which is causing an issue?

Upgraded the wait ttime not sure if its doing anything.

Any other suggestions or do I need to get a 50m-70m cable and dig into the ground...

[Alex12358795]

Update from Waveshare support for reference. So if I have 0 packet loss during alarm it might not be the connection?

Hello,

Based on the transmission statistics of the device, the number of bytes received by the client serial port is exactly equal to the number of bytes received by the server network port. This indicates that the module is transmitting and receiving data normally during operation, and no obvious abnormalities have been found so far.

The intermittent MET_Comm_FAIL(2011) error you mentioned may be related to the following situations:

1. The serial server may be affected by abnormal current or voltage interference, causing the module program to freeze or behave abnormally;
2. The power supply of the serial server or the meter may experience unexpected power interruption or insufficient power supply for unknown reasons;
3. The meter may stop responding to the host polling requests in certain situations, resulting in communication timeouts.

We recommend further checking the on-site power supply stability and wiring conditions.

In addition, you can continuously ping the IP address of the serial server for an extended period and observe whether the device can still be reached when the issue occurs:

• If the serial server can still be pinged during the abnormal condition, the issue is more likely related to the meter side;
• If the serial server cannot be pinged during the abnormal condition, the issue may be related to power supply abnormalities or abnormal current/voltage interference. In this case, you can try enabling the “No Data Auto Restart” function for testing.

However, this method cannot fundamentally solve the issue, and we still recommend identifying and resolving the root cause.

[alienatedsec]

So if there are times when your ping has higher delay, has the increasing time on the Waveshare made any difference?

[alienatedsec]

I would also suggest to earth/ground these Waveshares to reduce any interference.

[alienatedsec]

Finally, you will need to untick this "Restart for no data" to complete Waveshares instructions.

[Alex12358795]

So if there are times when your ping has higher delay, has the increasing time on the Waveshare made any difference?

I am not sure, I dont believe so

I would also suggest to earth/ground these Waveshares to reduce any interference.

How do I do this?

Finally, you will need to untick this "Restart for no data" to complete Waveshares instructions.

This wasn't clear from Waveshare instructions, I unchecked now as it was checked in their screenshot.

Does it matter where client and server sits? I reversed it and it seems data is less stable.

[alienatedsec]

Server is usually on the source side, so data you rely on. Client is your destination side, the side that receives the data.

About grounding, earthing, you need to look into Waveshare documentation or ask in ChatGPT or Perplexity as it may not be necessary for your case.

[alienatedsec]

Finally, you will need to untick this "Restart for no data" to complete Waveshares instructions.
This wasn't clear from Waveshare instructions, I unchecked now as it was checked in their screenshot.

Yes. That's why I flagged it. I find many instructions and manuals use the reverse logic.

[alienatedsec]

This issue is not project related; hence, why migrated to discussion @Alex12358795

[alienatedsec]

any progress @Alex12358795 ?

[Alex12358795]

Unfortunately not...we are going to try with a direct cable today +70m...

[Alex12358795]

@alienatedsec the good news is that the direct wire, even 70m, is working perfectly!

The bad news is, can I still link to HA or only via Soliscloud API? What about managing the battery for example with EVCC? What can I still do? + the 2x waveshares I have no use for anymore?

[alienatedsec]

I charge the battery at the same time when the car is charging. There is a mode called backup/reserved which is to force charge from the grid until your desired level and will not discharge below that level until changed to self-use mode.

[Alex12358795]

Any reason you do that approach? and how do you define the maximum charge?

Would you mind sharing your YAML from HA for this automation?

[alienatedsec]

Any reason you do that approach? and how do you define the maximum charge?

The easiest to manage

Would you mind sharing your YAML from HA for this automation

It would be difficult at the moment as I am on my phone and the automation is complex due to many factors. However, the simplest automation is to switch my inverter to backup/reserve mode when Octopus intelligent dispatching is on. And switch it back to self use mode when intelligent dispatching is off.

[Alex12358795]

Below automation is working perfectly! Its not charging or discharging when the Tesla wall connector is charging. Charging in case its helpfull for you - thanks again for your help, we can close as I am using the direct wire now.

`alias: "Solis: Pause battery during Tesla charging"
description: >-
Sets battery charge/discharge current to 0A when Tesla Wall Connector is
actively charging
triggers:

• entity_id: binary_sensor.tesla_wall_connector_contactor_closed
  to: "on"
  id: tesla_started
  trigger: state
• entity_id: binary_sensor.tesla_wall_connector_contactor_closed
  to: "off"
  id: tesla_stopped
  trigger: state
  actions:
• choose:
  • conditions:
    • condition: trigger
      id: tesla_started
      sequence:
    • target:
      entity_id: number.solis_solis_battery_charge_current
      data:
      value: 0
      action: number.set_value
    • target:
      entity_id: number.solis_solis_battery_discharge_current
      data:
      value: 0
      action: number.set_value
    • data:
      title: Solis Battery Paused
      message: Battery charge/discharge paused. Tesla is charging.
      action: persistent_notification.create
  • conditions:
    • condition: trigger
      id: tesla_stopped
      sequence:
    • target:
      entity_id: number.solis_solis_battery_charge_current
      data:
      value: 20
      action: number.set_value
    • target:
      entity_id: number.solis_solis_battery_discharge_current
      data:
      value: 20
      action: number.set_value
    • data:
      title: Solis Battery Resumed
      message: >-
      Battery charge/discharge restored to unlimited. Tesla stopped
      charging.
      action: persistent_notification.create
      mode: single
      max_exceeded: silent
      `

[dwallis2012]

Thanks all, had the same problem with my wifi setup followed the suggestions here and my connection is now stable and working , not sure how you got powerline adapters working though mine won't sync with the inverter turned on it sends too much interference and noise down the line for them to sync so I switch to wifi 😁