I have the same problem, connected to BMS in a row and connected the master to Victron by CAN.
In parallel i can read some data via RS485 of the master BMS, i am doing it with ESPHome to get the data into my home automation.
ESPHome component to monitor a Seplos Battery Management System (Seplos-BMS) via UART or RS485 - syssi/esphome-seplos-bms
github.com
I can read out the data of one pack, but could not read the data of the second one.
Is this really confirmed by Seplos that it doesn't work?
In the logs i can see a lot of unhandled data:
[08:33:59][D][uart_debug:114]: <<< 7E:32:30:30:31:34:36:35:41:30:30:30:30:46:44:39:44:0D:7E:32:30:30:31:34:36:35:41:43:30:34:30:30:30:30:31:30:43:41:37:30:42:43:37:30:42:38:36:30:42:38:33:46:43:41:37:31:34:32:30:34:30:41:41:36:44:36:30:30:32:34:46:31:34:32:34:30:30:30:30:30:30:30:30:30:30:30:30:30:33:30:30:30:30:30:31:46:30:33:38:0D [08:34:00][W][seplos_bms:023]: Unhandled data received: 20.01.46.5A.00.00 (6) [08:34:00][W][seplos_bms:023]: Unhandled data received: 20.01.46.5A.C0.40.00.01.0C.A7.0B.C8.0B.86.0B.83.FC.AD.14.20.40.A9.6D.60.02.4F.14.24.00.00.00.00.00.00.03.00.00.01 (38) [08:34:00][D][uart_debug:114]: <<< 7E:32:30:30:31:34:36:35:41:30:30:30:30:46:44:39:44:0D:7E:32:30:30:31:34:36:35:41:43:30:34:30:30:30:30:31:30:43:41:37:30:42:43:38:30:42:38:36:30:42:38:33:46:43:41:44:31:34:32:30:34:30:41:39:36:44:36:30:30:32:34:46:31:34:32:34:30:30:30:30:30:30:30:30:30:30:30:30:30:33:30:30:30:30:30:31:46:30:33:32:0D [08:34:00][D][uart_debug:114]: >>> 7E:32:30:30:30:34:36:34:32:45:30:30:32:30:30:46:44:33:37:0D [08:34:01][W][seplos_bms:023]: Unhandled data received: 20.01.46.5A.00.00 (6) [08:34:01][W][seplos_bms:023]: Unhandled data received: 20.01.46.5A.C0.40.00.01.0C.A6.0B.C7.0B.86.0B.83.FC.AD.14.20.40.A9.6D.60.02.4F.14.24.00.00.00.00.00.00.03.00.00.01 (38) [08:34:01][D][uart_debug:114]: <<< 7E:32:30:30:31:34:36:35:41:30:30:30:30:46:44:39:44:0D:7E:32:30:30:31:34:36:35:41:43:30:34:30:30:30:30:31:30:43:41:36:30:42:43:37:30:42:38:36:30:42:38:33:46:43:41:44:31:34:32:30:34:30:41:39:36:44:36:30:30:32:34:46:31:34:32:34:30:30:30:30:30:30:30:30:30:30:30:30:30:33:30:30:30:30:30:31:46:30:33:34:0D [08:34:02][W][seplos_bms:023]: Unhandled data received: 20.01.46.5A.00.00 (6) [08:34:02][D][uart_debug:114]: <<< 7E:32:30:30:31:34:36:35:41:30:30:30:30:46:44:39:44:0D:7E:32:30:30:31 [08:34:02][D][uart_debug:114]: >>> 7E:32:30:30:31:34:36:34:32:45:30:30:32:30:31:46:44:33:35:0D [08:34:02][W][seplos_bms:023]: Unhandled data received: 20.01.46.5A.C0.40.00.01.0C.A7.0B.C8.0B.86.0B.83.FC.B2.14.20.40.A9.6D.60.02.4F.14.24.00.00.00.00.00.00.03.00.00.01 (38) [08:34:02][D][uart_debug:114]: <<< 34:36:35:41:43:30:34:30:30:30:30:31:30:43:41:37:30:42:43:38:30:42:38:36:30:42:38:33:46:43:42:32:31:34:32:30:34:30:41:39:36:44:36:30:30:32:34:46:31:34:32:34:30:30:30:30:30:30:30:30:30:30:30:30:30:33:30:30:30:30:30:31:46:30:34:33:0D:7E:32:30:30:31:34:36:30:30:31:30:39:36:30:30:30:31:31:30:30:43:41:34:30:43:41:30:30:43:41:32:30:42:43:38:30:43:41:30:30:43:41:36:30:43:41:34:30:43:41:37:30:43:41:35:30:43:41:36:30:43:38:45:30:43:41:33:30:43:41:33:30:43 [08:34:02]
[seplos_bms:031]: Telemetry frame received [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 min cell voltage': Sending state 3.01600 V with 3 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 max cell voltage': Sending state 3.23900 V with 3 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 delta cell voltage': Sending state 0.22300 V with 3 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 average cell voltage': Sending state 3.22050 V with 3 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 current': Sending state -9.91000 A with 2 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 total voltage': Sending state 51.52000 V with 2 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 power': Sending state -510.56320 W with 2 decimals of accuracy [08:34:02][D][sensor:126]: 'seplos-bms-1 bank 0 state of charge': Sending state 59.10000 % with 1 decimals of accuracy [08:34:02][D][uart_debug:114]: <<< 41:34:30:43:41:35:30:43:41:31:30:36:30:42:38:35:30:42:38:36:30:42:38:33:30:42:38:34:30:42:39:45:30:42:38:33:46:43:32:31:31:34:32:30:34:30:41:39:30:41:36:44:36:30:30:32:34:46:36:44:36:30:30:30:30:32:30:33:45:38:31:34:32:34:30:30:30:30:30:30:30:30:30:30:30:30:30:30:30:30:44:44:34:32:0D
DOWNLOAD LOGSEDITCLOSE
So probably the data is there but it must be handled.
Did anyone already tried to handle this data?