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Seplos 200 10E RS485 mulfunction?

Logic28

Logic28

New Member
Joined
Nov 9, 2022
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90
Location
Holbeach Lincolnshire - UK
I know this has been posted several times in the past but I have not seen a conclusive solution for all those many instances.
I have tried several times with 3 different Seplos 48V 200 10E (V2) to communicate via RS485 to USB with the Seplos Battery Monitor software using the correct connections and also with the Seplos adapter but none of my BMSs seem to connect.
At this point, I'm not sure if it might be a poor batch of Seplos units or if it's because I'm using Windows 7 on Parallels for Mac, having said so, the connection shows ok in the interface and the led on the adapter blinks regularly.

I'd like to hear some other's opinion on this if possible.
Thanks
 
Logic28 said:
At this point, I'm not sure if it might be a poor batch of Seplos units or if it's because I'm using Windows 7 on Parallels for Mac, having said so, the connection shows ok in the interface and the led on the adapter blinks regularly.

I'd like to hear some other's opinion on this if possible.
Thanks
Click to expand...

Running on an emulator typically doesn't support serial connections, you need a real PC
 
Solar Guppy said:
Running on an emulator typically doesn't support serial connections, you need a real PC
Click to expand...
I thought it might be a problem but besides Parallels, even on Bootcamp, which is the original Windows running on a Mac machine I seem to experience the same problem.
I have 3 Macbook Pros which I happily use for all my Victron Monitoring and hardware settings, I would not like to add another machine just for that but I'll have to try at least just to understand the problem.
thanks
 
Logic28 said:
I know this has been posted several times in the past but I have not seen a conclusive solution for all those many instances.
I have tried several times with 3 different Seplos 48V 200 10E (V2) to communicate via RS485 to USB with the Seplos Battery Monitor software using the correct connections and also with the Seplos adapter but none of my BMSs seem to connect.
At this point, I'm not sure if it might be a poor batch of Seplos units or if it's because I'm using Windows 7 on Parallels for Mac, having said so, the connection shows ok in the interface and the led on the adapter blinks regularly.

I'd like to hear some other's opinion on this if possible.
Thanks
Click to expand...
Couple of things to check :

Using bluetooth , is connection pooling or auto addressing on ?
Turn both off

Do you have any dip switches set ?
If so turn off ( dip 5 + 6 enable canbus which disables rs485 to the master)

Make sure you are using a straight utp cat 5/7 cable , and not a crossover utp cable

Sometimes virtualizing a comport is troublesome..
Any chance to test it directly on a Windows machine ?
 
houseofancients said:
Make sure you are using a straight utp cat 5/7 cable , and not a crossover utp cable
Click to expand...
I've tested with two different straight cables (not a crossover) in two different configurations:
First cable A=orange B=white/orange G=white/green
Second cable A=white/brown B=brown G=green

I have also tried it on a PC Laptop with the same negative result
 
You could also try pins 7&8 brown/white and brown (swap/reverse if needed)

Do not connect the ground. Generally not needed for RS485

In addition try 19200 baud

I use these RS485 To USB Adapters:

 
One thing I had an issue with Seplos on my Hiten RS485 ( not your product ) was they reverse the connector vs socket view so pins are reversed in order in the physical compared to the documentation
 
I think sw1 needs to be ON for the master. I was able to see all 4 packs. First pack is #1, not #0 as might be expected.
The documentation is poor and confusing.
 
Last edited:
Quattrohead said:
I think sw1 needs to be ON for the master. I was able to see all 4 packs. First pack is #1, not #0 as might be expected.
The documentation is poor and confusing.
Click to expand...
That is if you have more than one pack (which is also my case but they are not linked) I can give it a try but again the instructions clearly state all dip switches off. I have seen so many videos including Andy's from Off Grid garage in Australia and they all use my configuration.
 
Logic28 said:
That is if you have more than one pack (which is also my case but they are not linked) I can give it a try but again the instructions clearly state all dip switches off. I have seen so many videos including Andy's from Off Grid garage in Australia and they all use my configuration.
Click to expand...
And that part of it is correct..

Again use the Bluetooth app to verify connection pooling and auto addressing is not turned ( as those WILL disable rs485 management to connect)

Verify you USB to rs485 adapter is configured correct in baudrate, if that is all ok, replace you Mac with a Windows machine, or stick to the Bluetooth.

If you want actual monitoring, you can also use home assistant with the BLE batter management add-on, which connects over bluetooth, or us Solar Assistant
 
houseofancients said:
Verify you USB to rs485 adapter is configured correct in baudrate, if that is all ok, replace you Mac with a Windows machine, or stick to the Bluetooth.
Click to expand...
I have replaced my Mac with a PC, but there have been no changes. I have tried both 9600 and 19200
I cannot reset the battery SOC if needed from the mobile APP besides I would like to monitor remotely
 
houseofancients said:
If you want actual monitoring, you can also use home assistant with the BLE batter management add-on, which connects over bluetooth, or us Solar Assistant
Click to expand...
I don't just need monitoring (cell's voltages etc) I need to be able to modify settings without having to go to the back of the garden to the solar shed.
Can the Bluetooth be monitored from the Home assistant? And would I have control over all functions? This is what I need and can achieve via direct RS485 even in a moderately long distance.
Otherwise, I have two options, 1) Bluetooth over Wifi or Ethernet 2) Wifi extender
 
Last edited:
i think for now it can only monitor :

github.com

GitHub - patman15/BMS_BLE-HA: This integration allows to monitor Bluetooth Low Energy (BLE) battery management systems (BMS) from within Home Assistant.

This integration allows to monitor Bluetooth Low Energy (BLE) battery management systems (BMS) from within Home Assistant. - GitHub - patman15/BMS_BLE-HA: This integration allows to monitor Blueto...
github.com github.com

and it is purely Bluetooth , but you may use a small esp32 Bluetooth proxy if the distance between HA and the batteries is too great.
Haven't tested this myself, as i am waiting for my esp32 and 48v -> 5v dc-dc converter to come in

Solar Assistant is for the batteries also only monitoring, but when the Master switch is set to on , the master will not be able to be added/monitored
 
as I was saying,
I don't just need monitoring (cell's voltages etc) I need to be able to modify settings without having to go to the back of the garden to the solar shed.

esp32 Bluetooth proxy? I'm not aware of this
Otherwise, I have two options, 1) Bluetooth over Wifi or Ethernet 2) Wifi extender
Personally, I'm not too keen on extenders and much prefer a solid hardware (cable) connection
 
Logic28 said:
as I was saying,
I don't just need monitoring (cell's voltages etc) I need to be able to modify settings without having to go to the back of the garden to the solar shed.
Click to expand...
no way to do that, not with current tooling, as they only for monitoring.
as a side note, one should configure the bms once, then there is never a need to change settings, unless this is a play setup, in which case i wouldnt put it in a shed
Logic28 said:
esp32 Bluetooth proxy? I'm not aware of this
Otherwise, I have two options, 1) Bluetooth over Wifi
Click to expand...
bluetooth proxy is about the same idea:

smarthomecircle.com

How to Connect Bluetooth Devices to Home Assistant with Bluetooth Proxy

In this article, we will explore how we can setup a Bluetooth Proxy to connect Bluetooth devices with Home Assistant
smarthomecircle.com smarthomecircle.com

Logic28 said:
or Ethernet 2) Wifi extender
Personally, I'm not too keen on extenders and much prefer a solid hardware (cable) connection
Click to expand...
 
houseofancients said:
as a side note, one should configure the bms once, then there is never a need to change settings, unless this is a play setup, in which case i wouldnt put it in a shed
Click to expand...
I would agree with you but when you are testing various settings in order to make the BMS reset to 100% you often have to play with them.
The "Shed" is not just a shed, it is a purposely designed and built fully insulated and sealed unit, a temperature and humidity-controlled environment where all the microgrid equipment is housed including three batteries.
 
Logic28 said:
I would agree with you but when you are testing various settings in order to make the BMS reset to 100% you often have to play with them.
Click to expand...
i've helped multiple users here with that...
also depends a bit on what type of inverter you run if this will even work out properly

what are you running as an inverter ?
Logic28 said:
The "Shed" is not just a shed, it is a purposely designed and built fully insulated and sealed unit, a temperature and humidity-controlled environment where all the microgrid equipment is housed including three batteries.
Click to expand...
 
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