Recent content by huntworker

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    Communication between BYD Battery and Kostal Plenticore Inverter

    Hi, nice to see you interested in the topic. :) You mean the last block, in this case 75 93 50 40? I am pretty sure that this is the voltage of the lowest cell since this matches well with the SOC. If I have a closer look, the Header of the messages is always the same E2 FF 02 FF 29 for...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Hi all, my activities stopped during summer because I didn't find any time. But during summer I got new ideas for the hardware and I will bring it to a PCB design and test it this winter. Plan is to have a running system for Christmas. @Jagganaut yes, I am in Germany, currently in the south...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    I didn't know Goodwe when I installed my setup. In the meantime I got in touch with the 48V 3,6kW version GW 3648-EM which has quite interesting data. I like the home consumption measurement with its current transformers. In my case it was "more complicated" with the Kostal smart energy meter...
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    High voltage hybrid inverter (GW6000-EH) with EV battery (Chevy Volt)

    would be very interesting to compare the data because in the setup of the old BYD B-Box HV (previous version of HVS or HVM) you need to set up your inverter brand. Not sure if this is relevant for the communication or just the interest of BYD.
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    Communication between BYD Battery and Kostal Plenticore Inverter

    I am trying to use a battery from an EV, maybe BMW i3 or even the tesla battery. i3 would be nice since the voltage is in a good range. With a Tesla battery I would need to use the whole pack with 60 to 100 kWh to have a good voltage, which might be a bit oversized. :D So am trying to simulate...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Totally Agree with you, most of the data are send as 4 byte float. But I am pretty sure that the 50, 25, 20 and 282 are send with 00 as low-byte. It doesn't make any sense that there are 01 written. I know that the float representation is not accurate but it doesn't make any sense to have the...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Totally agree with you, but in this case, please try to exchange the 01 bytes by 00 bytes and have again a look for the values. The 50 Amps, 25 Amps and 20 amps are pretty accurate then. The float values are BattVolt MaxVolt SysTemp BatteryCurrent BatteryCurrent MaxDiscCurr NomDiscCurr...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Fine to have another one having to have a look for the data! There is only one byte for checksum. The second last byte is 02 in all long messages. In the short messages there is as well 29 at this position, so I guess this is part of the address or similar. Thats also what we found out. But...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    The cycle counter just passed 256: 0A E2 FF 02 FF 29 9E BF 83 43 01 0F 8D 43 33 33 A7 41 9A 99 D9 BF 9A 99 D9 BF 01 03 48 42 01 03 C8 41 01 03 A0 41 01 0F A0 41 CD CC 90 41 96 43 53 40 23 DB 51 40 03 01 01 02 50 01 01 02 12 but it is more unclear than before. In the past the last bytes had been...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Thats quite normal behavior of the batteries. If the battery is charged nearly 100% the voltage is around 276 V. If it is then fully charged and the allowed current drops to 0 A, the voltage drops down as well. That is okay that the voltage is not at maximum the whole time. Thats the reason why...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Okay, I think I got it (basically) example: 0A E2 FF 02 FF 29 0C 92 85 43 01 0F 8D 43 9A 99 99 41 33 33 73 40 32 33 73 40 01 03 48 42...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Sometimes (every few hours) I get a response starting with 0x06 from the battery. The rest of the content is the same as the 0x0A messages. And the query from the inverter was the same as well. Somebody a glue on that? Example from this morning: 06 E2 FF 02 FF 29 04 40 87 43 01 0F 8D 43 66 66 AA...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Both confirmed. Current cycle count is 253, so we will get an answer the next days. Maybe there will be bytes inserted? FF 02 FF 29 C5 60 85 43 01 07 8D 43 9A 99 A5 41 01 01 01 01 01 01 01 01 01 03 48 42 01 03 C8 41 01 01 01 12 CD CC B0 41 66 66 9E 41 06 81 55 40 DF 4F 55 40 FD 04 01 40 64 01...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    It is time to show you my setup. First I need to tell you that I am an electrical engineer working in automotive industry. I develop control units for human machine interfaces for several OEMs. With that I have knowledge about several communication interfaces, so it was no problem with my...
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    Communication between BYD Battery and Kostal Plenticore Inverter

    Unfortunately we are talking about the same device. I talked to my brother about this and he started this thread. I just hijacked it. 😇 But if anyone has access to a different device, I might provide my setup. I will have access to a Plenticore Plus 7.0 with an 7.7 kWh HVS and to a Plenticore...
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