UART connector from BMS directly to Raspi GPIO

[Tabaluga0815]

Hi, I connected the UART connector from BMS directly to my Raspi GPIO ports , and can read the data via /dev/ttyS0 .
I send the data via mqtt to my mqtt iobroker on my Raspberry server. Send script is startetd by crontab every 10sec. But iobroker adapter shows no connection and data will come, but changing of values will not be provided.
I would apriciate for some help.
I connected BMS to my raspi GPIO Ports
connect on raspi at /dev/TTYS0
DALY --------------------- Raspberry Pi
Ground GND – pin 1 Ground e.g. pin 9
Data 1 UART_TX2 – pin 5 RXD – pin 10
Data 2 UART_RX2 – pin 6 TXT – pin 8

To wake up sleeping Daly BMS is use the KaFun method:
All that needs to be done is to short that pin 4 shortly to ground. In my case, I use
an opto coupler (want to be on the safe side) with the opto coupler output transistor‘s emitter connected to ground and
collector connected to pin 4 on the BMS. The opto coupler input is connected via a resistor to GPIO 4 which is pin 7 on the RasPI and the other input pin connected to ground as well.
To activate: Let run the activation script:

#!/usr/bin/env python3
import time
import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BCM)
GPIO.setup(4, GPIO.OUT)

GPIO.output(4, True)
time.sleep(2)
GPIO.output(4, False)
time.sleep(2)

GPIO.cleanup() # cleanup all GPIO

Best wishes
Ralf

[Tabaluga0815]

No ideas from anyone?
I put the script to crontab of raspi and let it run every 10sec:
/home/pi/python-daly-bms-main/bin/daly-bms-cli -d /dev/ttyS0 --soc --mqtt --mqtt-broker 127.0.0.1 --mqtt-port 1895

When I start the script to get the output on the screen:
/home/pi/python-daly-bms-main/bin/daly-bms-cli -d /dev/ttyS0 --soc
it will give correct output.

When I start it to send it to mqtt broker:
/home/pi/python-daly-bms-main/bin/daly-bms-cli -d /dev/ttyS0 --soc --mqtt --mqtt-broker 127.0.0.1 --mqtt-port 1895
it will not update the current status of the values, only some values are updatetd, but most will be ignored.

Do you have any idea what I can do?

Best wishes Ralf