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Hi, You have right...I have had bad wiring...After fixing seems to work well. I can confirm that now i it work well with BMS PACE ver: P16S100A-21265-1.03. Batteries producer: Yechuang I have 3 Pack 15KWh each. Thank you for great work and support.

HI, Thank you for your replay.I,m now on short holiday, I will be back on friday and I chack the wiring and send you my cofiguration.

HI, I have LifePO4 Batery system called "Yechuang" from China. This system is equiped with Pace BMS..I have tried to connect this BMS to home assistant, and In log i have found this: Connection Type: IP MQTT connected with result code 0 Connecting to BMS... trying to connect 10.0.0.221:8234 BMS socket connected -> Outgoing Data: b'~250146C10000FD9A\r' <- Incoming data: b'~250146C10000FD9A\r' SOI: 0x7e VER: b'25' ADR: b'01' CID1 (Type): b'46' RTN: b'C1' LENGTH: b'0000' - LCHKSUM: 48 - LENID: b'000' - LENID (int): 0 INFO: b'' CHKSUM: b'FD9A' Calc CHKSUM: FD9A BMS Version: -> Outgoing Data: b'~250146C20000FD99\r' <- Incoming data: b'~250146C20000FD99\r' SOI: 0x7e VER: b'25' ADR: b'01' CID1 (Type): b'46' RTN: b'C2' LENGTH: b'0000' - LCHKSUM: 48 - LENID: b'000' - LENID (int): 0 INFO: b'' CHKSUM: b'FD99' Calc CHKSUM: FD99 BMS Serial Number: Pack Serial Number: -> Outgoing Data: b'~25014642E002FFFD05\r' <- Incoming data: b'~25014642E002FFFD05\r' SOI: 0x7e VER: b'25' ADR: b'01' CID1 (Type): b'46' RTN: b'42' LENGTH: b'E002' - LCHKSUM: 69 - LENID: b'002' - LENID (int): 2 INFO: b'FF' CHKSUM: b'FD05' Calc CHKSUM: FD05 Error parsing BMS analog data: invalid literal for int() with base 16: b'' Error retrieving BMS analog data: Error parsing BMS analog data: invalid literal for int() with base 16: b'' Any idea what I sholuld do ?? Thanks