Frequent driver restarts stop, when logging is reconfigured to DEBUG

[beliffm]

Describe the problem

I have been experiencing frequent driver restarts on both of my two BMSes. They all take place in a similar pattern which can be seen in the log below, In order to gain more information to tackle the problem i switched the log level to debug, only to find that the restarts stopped. I monitored the situation for more than two hours, not a single driver restart. What happened after i reconfigured to default logging can be seen below. Only after some minutes there was a restart.
My guess is, given that the serial connection is only 9600 baud, the polling is somewhat to "fast" and the serial buffer is not yet filled, which is then interpreted wrongly and triggers the restart. A higher log level slows the polling loop down, thus avoiding the situation of an empty buffer.

Driver version

v1.0.20231117dev

Venus OS device type

GX Card (integrated in Victron device)

Venus OS version

V3.20~26

BMS type

Smart BMS (LLT, JBD, Overkill Solar)

Cell count

16

Connection type

Serial USB adapter to TTL

Config file

[DEFAULT]

; If you want to add custom values/settings, then check the values/settings you want to change in "config.default.ini"
; and insert them below to persist future driver updates.

; Example (remove the semicolon ";" to uncomment and activate the value/setting):
MAX_BATTERY_CHARGE_CURRENT = 120.0
MAX_BATTERY_DISCHARGE_CURRENT = 150.0
BMS_TYPE = LltJbd
; LOGGING = DEBUG

Relevant log output

2023-11-26 17:24:14.664824500 INFO:SerialBattery:
2023-11-26 17:24:14.665999500 INFO:SerialBattery:Starting dbus-serialbattery
2023-11-26 17:24:14.668060500 INFO:SerialBattery:dbus-serialbattery v1.0.20231117dev
2023-11-26 17:24:30.673672500 INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
2023-11-26 17:24:30.674295500 INFO:SerialBattery:Testing LltJbd
2023-11-26 17:24:31.281704500 INFO:SerialBattery:Connection established to LltJbd
2023-11-26 17:24:31.282234500 INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyUSB1
2023-11-26 17:24:31.282742500 INFO:SerialBattery:========== Settings ==========
2023-11-26 17:24:31.283254500 INFO:SerialBattery:> Connection voltage: 52.49V | Current: 2.0A | SoC: 82.17%
2023-11-26 17:24:31.283669500 INFO:SerialBattery:> Cell count: 16 | Cells populated: 16
2023-11-26 17:24:31.284077500 INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
2023-11-26 17:24:31.284480500 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 120.0A | MAX BATTERY DISCHARGE CURRENT: 150.0A
2023-11-26 17:24:31.284880500 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 150.0A | MAX BATTERY DISCHARGE CURRENT: 150.0A (read from BMS)
2023-11-26 17:24:31.285277500 INFO:SerialBattery:> CVCM:     True
2023-11-26 17:24:31.285691500 INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
2023-11-26 17:24:31.286085500 INFO:SerialBattery:> CCCM CV:  True  | DCCM CV:  True
2023-11-26 17:24:31.286468500 INFO:SerialBattery:> CCCM T:   True  | DCCM T:   True
2023-11-26 17:24:31.286844500 INFO:SerialBattery:> CCCM SOC: True  | DCCM SOC: True
2023-11-26 17:24:31.287308500 INFO:SerialBattery:Serial Number/Unique Identifier: 21_280.0Ah
2023-11-26 17:24:31.345424500 INFO:SerialBattery:DeviceInstance = 1
2023-11-26 17:24:31.346240500 INFO:SerialBattery:com.victronenergy.battery.ttyUSB1
2023-11-26 17:24:31.680194500 INFO:SerialBattery:publish config values = 1
2023-11-26 17:32:07.435580500 ERROR:SerialBattery:>>> ERROR: Invalid response packet. Expected begin packet character 0xDD
2023-11-26 17:32:07.443495500 Traceback (most recent call last):
2023-11-26 17:32:07.443506500   File "/opt/victronenergy/dbus-serialbattery/dbushelper.py", line 351, in publish_battery
2023-11-26 17:32:07.443511500     result = self.battery.refresh_data()
2023-11-26 17:32:07.443513500   File "/opt/victronenergy/dbus-serialbattery/bms/lltjbd.py", line 444, in refresh_data
2023-11-26 17:32:07.443516500     return self.read_gen_data() and self.read_cell_data()
2023-11-26 17:32:07.443519500   File "/opt/victronenergy/dbus-serialbattery/bms/lltjbd.py", line 532, in read_gen_data
2023-11-26 17:32:07.443635500     gen_data = self.read_serial_data_llt(self.command_general)
2023-11-26 17:32:07.443638500   File "/opt/victronenergy/dbus-serialbattery/bms/lltjbd.py", line 653, in read_serial_data_llt
2023-11-26 17:32:07.443642500     return self.validate_packet(data)
2023-11-26 17:32:07.443644500   File "/opt/victronenergy/dbus-serialbattery/bms/lltjbd.py", line 625, in validate_packet
2023-11-26 17:32:07.443648500     logger.warn(">>> WARN: BMS rejected request. Status " + status)
2023-11-26 17:32:07.443669500 TypeError: can only concatenate str (not "int") to str
2023-11-26 17:32:07.443882500 #0
2023-11-26 17:32:07.443885500 #1
2023-11-26 17:32:07.443886500 #2
2023-11-26 17:32:07.443887500 #3
2023-11-26 17:32:07.443888500 #4
2023-11-26 17:32:07.443889500 #5
2023-11-26 17:32:07.443889500 #6
2023-11-26 17:32:07.443890500 #7
2023-11-26 17:32:07.443891500 #8
2023-11-26 17:32:07.443892500 #9
2023-11-26 17:32:07.443893500 #10
2023-11-26 17:32:07.443894500 #11
2023-11-26 17:32:07.443895500 #12
2023-11-26 17:32:07.443896500 #13
2023-11-26 17:32:07.443897500 #14
2023-11-26 17:32:07.443898500 #15
2023-11-26 17:32:40.834222500 INFO:SerialBattery:
2023-11-26 17:32:40.835451500 INFO:SerialBattery:Starting dbus-serialbattery
2023-11-26 17:32:40.837590500 INFO:SerialBattery:dbus-serialbattery v1.0.20231117dev
2023-11-26 17:32:56.853645500 INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
2023-11-26 17:32:56.854219500 INFO:SerialBattery:Testing LltJbd
2023-11-26 17:32:57.479204500 INFO:SerialBattery:Connection established to LltJbd
2023-11-26 17:32:57.479746500 INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyUSB1
2023-11-26 17:32:57.480152500 INFO:SerialBattery:========== Settings ==========
2023-11-26 17:32:57.480620500 INFO:SerialBattery:> Connection voltage: 52.49V | Current: 2.08A | SoC: 81.49%
2023-11-26 17:32:57.481006500 INFO:SerialBattery:> Cell count: 16 | Cells populated: 16
2023-11-26 17:32:57.481403500 INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
2023-11-26 17:32:57.481809500 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 120.0A | MAX BATTERY DISCHARGE CURRENT: 150.0A
2023-11-26 17:32:57.482210500 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 150.0A | MAX BATTERY DISCHARGE CURRENT: 150.0A (read from BMS)
2023-11-26 17:32:57.482578500 INFO:SerialBattery:> CVCM:     True
2023-11-26 17:32:57.483095500 INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
2023-11-26 17:32:57.483503500 INFO:SerialBattery:> CCCM CV:  True  | DCCM CV:  True
2023-11-26 17:32:57.483887500 INFO:SerialBattery:> CCCM T:   True  | DCCM T:   True
2023-11-26 17:32:57.484268500 INFO:SerialBattery:> CCCM SOC: True  | DCCM SOC: True
2023-11-26 17:32:57.484744500 INFO:SerialBattery:Serial Number/Unique Identifier: 21_280.0Ah
2023-11-26 17:32:57.541866500 INFO:SerialBattery:DeviceInstance = 1
2023-11-26 17:32:57.542778500 INFO:SerialBattery:com.victronenergy.battery.ttyUSB1
2023-11-26 17:32:57.887155500 INFO:SerialBattery:publish config values = 1
2023-11-26 17:37:29.240003500 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:34/119]

Any other information that may be helpful

No response

[stixif]

here the same with 2 Batterys

It looks like it only happens during discharge

**Nr. 1**
@400000006564d9be339b0964 INFO:SerialBattery:
@400000006564d9be33ae4344 INFO:SerialBattery:Starting dbus-serialbattery
@400000006564d9be33da509c INFO:SerialBattery:dbus-serialbattery v1.0.20231126dev
@400000006564d9c918578b64 INFO:SerialBattery:
@400000006564d9c9186041dc INFO:SerialBattery:Starting dbus-serialbattery
@400000006564d9c91874279c INFO:SerialBattery:dbus-serialbattery v1.0.20231126dev
@400000006564d9d91931554c INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@400000006564d9d9193c422c INFO:SerialBattery:Testing LltJbd
@400000006564d9da116a9c4c INFO:SerialBattery:Connection established to LltJbd
@400000006564d9da11736a34 INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyACM0
@400000006564d9da117af3e4 INFO:SerialBattery:========== Settings ==========
@400000006564d9da11825684 INFO:SerialBattery:> Connection voltage: 56.88V | Current: 0.0A | SoC: 28.44%
@400000006564d9da118a45c4 INFO:SerialBattery:> Cell count: 18 | Cells populated: 18
@400000006564d9da1191d35c INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
@400000006564d9da119a08ec INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 100.0A | MAX BATTERY DISCHARGE CURRENT: 100.0A
@400000006564d9da11a22edc INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 190.0A | MAX BATTERY DISCHARGE CURRENT: 190.0A (read from BMS)
@400000006564d9da11aa452c INFO:SerialBattery:> CVCM:     True
@400000006564d9da11b2058c INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
@400000006564d9da11b9be1c INFO:SerialBattery:> CCCM CV:  True  | DCCM CV:  True
@400000006564d9da11c16edc INFO:SerialBattery:> CCCM T:   True  | DCCM T:   True
@400000006564d9da11e9599c INFO:SerialBattery:> CCCM SOC: True  | DCCM SOC: True
@400000006564d9da11ed0aec INFO:SerialBattery:Serial Number/Unique Identifier: 40_280.0Ah
@400000006564d9da2f0fe7ac INFO:SerialBattery:Found existing battery with DeviceInstance = 1
@400000006564d9da39b1284c INFO:SerialBattery:DeviceInstance = 1
@400000006564d9da39bd6904 INFO:SerialBattery:Used device instances: ['1']
@400000006564d9da39c78eac INFO:SerialBattery:com.victronenergy.battery.ttyACM0
@400000006564d9eb01d064c4 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:31/36]
@400000006564d9eb020c298c ERROR:SerialBattery:ERROR >>> Problem with battery set up at /dev/ttyACM0
@400000006564d9eb022877a4 #0
@400000006564d9eb022892fc #1
@400000006564d9eb022896e4 #2
@400000006564d9eb02289acc #3
@400000006564d9eb0228a29c #4
@400000006564d9eb0228a684 #5
@400000006564d9eb0228aa6c #6
@400000006564d9eb0228b23c #7
@400000006564d9eb0228b624 #8
@400000006564d9eb0228ba0c #9
@400000006564d9eb0228bdf4 #10
@400000006564d9eb0228c5c4 #11
@400000006564d9eb0228c9ac #12
@400000006564d9eb0228cd94 #13
@400000006564d9eb0228d564 #14
@400000006564d9eb0228d94c #15
@400000006564d9eb0228dd34 #16
@400000006564d9eb0228e504 #17
@400000006564d9eb022969d4 Setted setting /Settings/Devices/serialbattery_40_280_0Ah/LastSeen to 1701108176
@400000006564d9fa00ffb2fc INFO:SerialBattery:
@400000006564d9fa010734dc INFO:SerialBattery:Starting dbus-serialbattery
@400000006564d9fa0116d0f4 INFO:SerialBattery:dbus-serialbattery v1.0.20231126dev
@400000006564da0a01ec9784 INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@400000006564da0a01f5750c INFO:SerialBattery:Testing LltJbd
@400000006564da0a36208f4c INFO:SerialBattery:Connection established to LltJbd
@400000006564da0a3630d744 INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyACM0
@400000006564da0a36430b6c INFO:SerialBattery:========== Settings ==========
@400000006564da0a364326c4 INFO:SerialBattery:> Connection voltage: 56.91V | Current: 1.29A | SoC: 28.44%
@400000006564da0a366e789c INFO:SerialBattery:> Cell count: 18 | Cells populated: 18
@400000006564da0a368081cc INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
@400000006564da0a368563cc INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 100.0A | MAX BATTERY DISCHARGE CURRENT: 100.0A
@400000006564da0a36b9dd64 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 190.0A | MAX BATTERY DISCHARGE CURRENT: 190.0A (read from BMS)
@400000006564da0a36bbd934 INFO:SerialBattery:> CVCM:     True
@400000006564da0a3715ebcc INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
@400000006564da0a3720b584 INFO:SerialBattery:> CCCM CV:  True  | DCCM CV:  True
@400000006564da0a3729642c INFO:SerialBattery:> CCCM T:   True  | DCCM T:   True
@400000006564da0a3731e3f4 INFO:SerialBattery:> CCCM SOC: True  | DCCM SOC: True
@400000006564da0a373b3e7c INFO:SerialBattery:Serial Number/Unique Identifier: 40_280.0Ah
@400000006564da0b151aafe4 INFO:SerialBattery:Found existing battery with DeviceInstance = 1
@400000006564da0b1efa1784 INFO:SerialBattery:DeviceInstance = 1
@400000006564da0b1f02ed3c INFO:SerialBattery:Used device instances: ['1']
@400000006564da0b1f0ac8f4 INFO:SerialBattery:com.victronenergy.battery.ttyACM0
@400000006564da0c051e5744 INFO:SerialBattery:publish config values = 1

**Nr.2**
@400000006564d9be37a264bc INFO:SerialBattery:
@400000006564d9be37a283fc INFO:SerialBattery:Starting dbus-serialbattery
@400000006564d9be37adeddc INFO:SerialBattery:dbus-serialbattery v1.0.20231126dev
@400000006564d9c917fcdc8c INFO:SerialBattery:
@400000006564d9c9180a9c14 INFO:SerialBattery:Starting dbus-serialbattery
@400000006564d9c9182196e4 INFO:SerialBattery:dbus-serialbattery v1.0.20231126dev
@400000006564d9d918c871bc INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@400000006564d9d918c88d14 INFO:SerialBattery:Testing LltJbd
@400000006564d9da114881d4 INFO:SerialBattery:Connection established to LltJbd
@400000006564d9da11530d0c INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyACM1
@400000006564d9da115b429c INFO:SerialBattery:========== Settings ==========
@400000006564d9da1166a4ac INFO:SerialBattery:> Connection voltage: 56.84V | Current: 0.0A | SoC: 31.26%
@400000006564d9da117202d4 INFO:SerialBattery:> Cell count: 18 | Cells populated: 18
@400000006564d9da117dab34 INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
@400000006564d9da11883284 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 100.0A | MAX BATTERY DISCHARGE CURRENT: 100.0A
@400000006564d9da1194251c INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 190.0A | MAX BATTERY DISCHARGE CURRENT: 190.0A (read from BMS)
@400000006564d9da119e6a04 INFO:SerialBattery:> CVCM:     True
@400000006564d9da11a8e1b4 INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
@400000006564d9da11b47e5c INFO:SerialBattery:> CCCM CV:  True  | DCCM CV:  True
@400000006564d9da11be9c34 INFO:SerialBattery:> CCCM T:   True  | DCCM T:   True
@400000006564d9da11ce6efc INFO:SerialBattery:> CCCM SOC: True  | DCCM SOC: True
@400000006564d9da11f6618c INFO:SerialBattery:Serial Number/Unique Identifier: 40_280.0Ah
@400000006564d9da2f40e2bc INFO:SerialBattery:Found existing battery with DeviceInstance = 1
@400000006564d9da3a88f664 INFO:SerialBattery:DeviceInstance = 1
@400000006564d9da3a97f254 INFO:SerialBattery:Used device instances: ['1']
@400000006564d9da3aa26dec INFO:SerialBattery:com.victronenergy.battery.ttyACM1
@400000006564d9db203c6354 INFO:SerialBattery:publish config values = 1
@400000006564dd7a01e6985c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd7b01f12b64 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd7c0fdea904 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd7d01c9f83c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd7e108e654c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd7f106019bc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd80025a5d14 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8101f7ce9c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8202435e5c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd830225c054 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd84103f243c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd85039198dc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8610b33afc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd87025bff0c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd89029cd4b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8b02badc34 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8c032f0294 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8d02ca5cf4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8e11630acc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd8f033714fc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd90122e982c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd91031eaafc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd920377a454 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd93036cde84 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd94044fa14c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9503768efc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9603db925c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9703932f1c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9803b2d0c4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd99048157dc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9a047987dc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9b045b2a6c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9c04e6e00c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9d04a308dc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9e04e85edc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dd9f0513c054 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dda005402784 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dda105d0de64 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564dda205fba784 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564ddab12499a3c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564ddac0628b2c4 ERROR:SerialBattery:>>> ERROR: No reply - returning

[mr-manuel]

You have also the unique identifier on both batteries the same. Change the capacity on one + or - 1 amp

[stixif]

i changed it...

but the failure is the same...

Nr1.
@400000006564f62d34b6fccc INFO:SerialBattery:
@400000006564f62d34bdafa4 INFO:SerialBattery:Starting dbus-serialbattery
@400000006564f62d34f63c34 INFO:SerialBattery:dbus-serialbattery v1.0.20231117dev
@400000006564f6380f07c934 INFO:SerialBattery:
@400000006564f6380f107fac INFO:SerialBattery:Starting dbus-serialbattery
@400000006564f6380f2a416c INFO:SerialBattery:dbus-serialbattery v1.0.20231117dev
@400000006564f6481010c524 INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@400000006564f6481017e55c INFO:SerialBattery:Testing LltJbd
@400000006564f6583b638f54 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:14/164]
@400000006564f6591dc7776c INFO:SerialBattery:-- Testing BMS: 2 of 3 rounds
@400000006564f6591dcece54 INFO:SerialBattery:Testing LltJbd
@400000006564f65a15895034 INFO:SerialBattery:Connection established to LltJbd
@400000006564f65a1590d9e4 INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyACM0
@400000006564f65a15984c24 INFO:SerialBattery:========== Settings ==========
@400000006564f65a15a0106c INFO:SerialBattery:> Connection voltage: 58.45V | Current: 0.0A | SoC: 30.18%
@400000006564f65a15a730a4 INFO:SerialBattery:> Cell count: 18 | Cells populated: 18
@400000006564f65a15ae1a2c INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
@400000006564f65a15b5fdb4 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 100.0A | MAX BATTERY DISCHARGE CURRENT: 100.0A
@400000006564f65a15bd73dc INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 190.0A | MAX BATTERY DISCHARGE CURRENT: 190.0A (read from BMS)
@400000006564f65a15c4614c INFO:SerialBattery:> CVCM: True
@400000006564f65a15cb98f4 INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
@400000006564f65a15d316ec INFO:SerialBattery:> CCCM CV: True | DCCM CV: True
@400000006564f65a15daa484 INFO:SerialBattery:> CCCM T: True | DCCM T: True
@400000006564f65a15e212dc INFO:SerialBattery:> CCCM SOC: True | DCCM SOC: True
@400000006564f65a15ea486c INFO:SerialBattery:Serial Number/Unique Identifier: 40_280.0Ah
@400000006564f65a1899ef7c INFO:SerialBattery:DeviceInstance = 2
@400000006564f65a18a4113c INFO:SerialBattery:com.victronenergy.battery.ttyACM0
@400000006564f65a3985846c INFO:SerialBattery:publish config values = 1

Nr.2
@400000006564f62e09c843cc INFO:SerialBattery:
@400000006564f62e09cf4c94 INFO:SerialBattery:Starting dbus-serialbattery
@400000006564f62e09e19ffc INFO:SerialBattery:dbus-serialbattery v1.0.20231117dev
@400000006564f6380e35deec INFO:SerialBattery:
@400000006564f6380e3e0cac INFO:SerialBattery:Starting dbus-serialbattery
@400000006564f6380e531b4c INFO:SerialBattery:dbus-serialbattery v1.0.20231117dev
@400000006564f6480f55ed1c INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@400000006564f6480f5d7e9c INFO:SerialBattery:Testing LltJbd
@400000006564f64909058c24 INFO:SerialBattery:Connection established to LltJbd
@400000006564f649090fa9fc INFO:SerialBattery:Battery LLT/JBD connected to dbus from /dev/ttyACM1
@400000006564f649091658ec INFO:SerialBattery:========== Settings ==========
@400000006564f649091db7a4 INFO:SerialBattery:> Connection voltage: 59.65V | Current: 76.22A | SoC: 30.73%
@400000006564f649092462ac INFO:SerialBattery:> Cell count: 18 | Cells populated: 18
@400000006564f649092bcd1c INFO:SerialBattery:> LINEAR LIMITATION ENABLE: True
@400000006564f6490935cbb4 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 100.0A | MAX BATTERY DISCHARGE CURRENT: 100.0A
@400000006564f649093e37f4 INFO:SerialBattery:> MAX BATTERY CHARGE CURRENT: 190.0A | MAX BATTERY DISCHARGE CURRENT: 190.0A (read from BMS)
@400000006564f64909460024 INFO:SerialBattery:> CVCM: True
@400000006564f649094db4cc INFO:SerialBattery:> MIN CELL VOLTAGE: 2.9V | MAX CELL VOLTAGE: 3.45V
@400000006564f649095561a4 INFO:SerialBattery:> CCCM CV: True | DCCM CV: True
@400000006564f649095da2ec INFO:SerialBattery:> CCCM T: True | DCCM T: True
@400000006564f64909653854 INFO:SerialBattery:> CCCM SOC: True | DCCM SOC: True
@400000006564f649096e7b6c INFO:SerialBattery:Serial Number/Unique Identifier: 40_279.0Ah
@400000006564f6490dfc8f0c INFO:SerialBattery:DeviceInstance = 3
@400000006564f6490e09aa84 INFO:SerialBattery:com.victronenergy.battery.ttyACM1
@400000006564f6492ef0f1e4 INFO:SerialBattery:publish config values = 1
@400000006564f6ca0ffdf8a4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6cb1066e7ec ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6cc1e1485fc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6cd0fece1a4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ce1ecd6234 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6cf0ff76124 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d01de3c19c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d11075208c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d21e35258c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d31050a4b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d41f46b4cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d510e57e2c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d7115cf04c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d810cfc794 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6d9114c2f3c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6da10f9350c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6db114eabf4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6dc1fdef944 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6dd10fee614 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6de10f06b0c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6df11d204f4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e01138514c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e1202d0d8c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e21163494c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e311481c44 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e41165f4e4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e5117a5b8c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e61199ddf4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e71213dc6c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6e912511064 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ea11d3dd9c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6eb1220f7e4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ec1fed168c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ed12cd83c4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ee20495ba4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ef128e3c8c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f0129531cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f112e30f64 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f2124d6eb4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f312a4e16c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f412b21454 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f61313eb34 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f712f5e3b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f812cad82c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6f921e9e474 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6fa12f3304c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6fb12e0060c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6fc12dbb494 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6fd138b97ec ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6fe1303ca4c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f6ff131bcad4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7001339d254 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70113687f8c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f702138e5324 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70321d022b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70413a457dc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f705225ddbf4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70613810cb4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7072219937c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7081408af5c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70913fc14cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70a13bcecd4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f70b15226c5c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f71a1567167c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f71c153822f4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f71d156253bc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f71e158911b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f71f153494cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72015742a24 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7211565ab34 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72215e01af4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72315f3d9a4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72416ded9cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72523b82464 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72615bf2d44 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72725905734 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f728162b6c34 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72924ea89e4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72a161c7814 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72b25848f94 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72c24b9449c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72d167b68c4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72e16461854 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f72f167c3bb4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7301642d84c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f73116b5d9b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f73f27ba111c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7402658bbfc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74117edec54 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7422618385c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74318106c5c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f744180a2acc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74518336194 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74628683b0c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7471858817c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f748184c3124 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74918637dfc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74a18c19bbc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74b18849a8c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74c18f24c94 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74d190e2194 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74e18bf7cc4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f74f2849703c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75018f92e4c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75119097644 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75218ef85a4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75319bcc0b4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7541a08cd74 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75519f67df4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75619421a44 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f75719e1bd74 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f76126f7f99c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7621a69507c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7631aaddf44 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7641a71dfe4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7651aa1d53c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7661a7afbec ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7671b09da24 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7681abfd4ec ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f769294a4a24 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f76b1b187854 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f76c1b028ef4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f76d1b155f5c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f76e1b14e644 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f76f1b98aca4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7701bac482c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7711b7df4cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77229add29c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7731c5e989c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f774297b2dc4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7751b9a0c34 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77629f30d44 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7771c76feb4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7791c566adc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77a1be2f82c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77b1beb0a94 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77c1c4f69e4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77d1c38a9ac ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f77e1c69b074 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7801c74437c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7811c71ce94 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7821ca6211c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7831ce5d1cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7841cb4424c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7851ce51a34 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7861ce98704 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7871ce6a0d4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7881d76a01c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7891d1dc9ec ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f78a1d21aa1c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f78b2b74699c ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f78c1d3f09a4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f78d1d9cc5bc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f78e1d313e64 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f78f2cbe9124 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7901d9edce4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7911df80134 ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7921d8e3efc ERROR:SerialBattery:>>> ERROR: No reply - returning
@400000006564f7931da63b9c ERROR:SerialBattery:>>> ERROR: No reply - returning

[stixif]

every time it is the same BMS...
I replaced the USB etc

[beliffm]

@stixif Does your problem go away when you change the logging to DEBUG? To me it does not look like it. So it might be something else, given that it is only the one BMS that fails not both. Are You using isolated interfaces? Are the two ground lines of the two interfaces isolated from each other. It should be yes in both cases.

[stixif]

@beliffm yes to both...

In the Last months it worket normaly

[stixif]

with the newest dev from 28.11 it looks like good!

[mr-manuel]

Are you using Ruuvi tags?

[stixif]

@mr-manuel
no not realy...

[mr-manuel]

@beliffm could you also test the latest build?

[stixif]

@mr-manuel
now today by charging the battery all is OK...
but on discharging the errors come back...

@4000000065676b3611eb8c1c INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@4000000065676b3611f2fa74 INFO:SerialBattery:Testing LltJbd
@4000000065676b362222b754 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000065676b37049b1d84 INFO:SerialBattery:-- Testing BMS: 2 of 3 rounds
@4000000065676b37049b34f4 INFO:SerialBattery:Testing LltJbd
@4000000065676b37145ea72c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000065676b37327171cc INFO:SerialBattery:-- Testing BMS: 3 of 3 rounds
@4000000065676b373285f3cc INFO:SerialBattery:Testing LltJbd
@4000000065676b3806b01304 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000065676b3825173764 ERROR:SerialBattery:ERROR >>> No battery connection at /dev/ttyACM1
@4000000065676b481dfb607c INFO:SerialBattery:
@4000000065676b481e0883c4 INFO:SerialBattery:Starting dbus-serialbattery
@4000000065676b481e1ea3d4 INFO:SerialBattery:dbus-serialbattery v1.0.20231128dev
@4000000065676b581f33ffbc INFO:SerialBattery:-- Testing BMS: 1 of 3 rounds
@4000000065676b581f341b14 INFO:SerialBattery:Testing LltJbd
@4000000065676b582faed72c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000065676b59120230fc INFO:SerialBattery:-- Testing BMS: 2 of 3 rounds
@4000000065676b5912024c54 INFO:SerialBattery:Testing LltJbd
@4000000065676b5922cde3a4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000065676b5a051b9ff4 INFO:SerialBattery:-- Testing BMS: 3 of 3 rounds
@4000000065676b5a05300e6c INFO:SerialBattery:Testing LltJbd
@4000000065676b5a15134d44 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000065676b5a33648844 ERROR:SerialBattery:ERROR >>> No battery connection at /dev/ttyACM1
@4000000065676b6a2d69ec54 INFO:SerialBattery:

[mr-manuel]

Probably one value is out of the bounds. I will add some debugging to check that.

[stixif]

i checked my values in the BMS and found an empty one...
"Discharge under Temperature release"
i set them now and will check again...
thanks for your help

[beliffm]

@beliffm could you also test the latest build?

Will do...

[beliffm]

No change, restarts happening on both BMS every ten minutes or so. Any thoughts on the impact of the logging setting?

[mr-manuel]

Try to set this to 2000.

dbus-serialbattery/etc/dbus-serialbattery/battery.py

Line 63 in c6d5bb6

self.poll_interval: int = 1000

[beliffm]

Try to set this to 2000.

dbus-serialbattery/etc/dbus-serialbattery/battery.py

Line 63 in c6d5bb6

self.poll_interval: int = 1000

That helped. No more restarts. All that is left now since 8:07, when i made the change, is what can be seen in the log excerpt below. Those errors may result from a different issue though.

==> /data/log/dbus-serialbattery.ttyUSB1/current <==
2023-12-01 08:18:24.037539500 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:34/104]
2023-12-01 08:41:13.552683500 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:33/258]
2023-12-01 09:15:37.817786500 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:34/98]

==> /data/log/dbus-serialbattery.ttyUSB2/current <==
2023-12-01 09:27:34.704079500 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:33/259]

==> /data/log/dbus-serialbattery.ttyUSB1/current <==
2023-12-01 09:33:31.003588500 ERROR:SerialBattery:>>> ERROR: No reply - returning [len:34/94]

[mr-manuel]

Maybe your BMS gets overloaded with polling every 2 seconds. What is your cpu usage of the gx card when you set it again to 1000?

[beliffm]

Maybe your BMS gets overloaded with polling every 2 seconds. What is your cpu usage of the gx card when you set it again to 1000?

CPU usage is about 10% in both cases... Maybe polling every second really is too fast for the BMSes. Since this morning there have been some occurances, but by far not as many as before.

[mr-manuel]

If you did not already try other USB to serial converters it could also be that the converter is the problem.

[beliffm]

Finally the quad-converter from duppa.net arrived yesterday. Since i changed my build-up to this converter the restarts have stopped completely even if i reset the polling rate back to 1000ms. Mind you, the LLTJBD-BMS has 12V supply on the UART connector which has to be converted to 5V to suit the Duppa.net converter. Formerly i used two converters which came with the BMSs together with an Auge USB hub. Maybe the GX card does not provide enough power for such a construction at high polling rates.
So thank you all for your patience and helping hands.