MCU background is alarming continuously.
foreground and background communication is abnormal.
Modify setting or check the related factor.
1. The serial cable between foreground and background is not contacting the background socket poorly.
2. There are problems inside of the serial cable.
3. The serial port of foreground or background is damaged.
4. Foreground INI file or background serial port configuration cannot be modified rightly lead to the fact that the serial port or communication speed is not matched to the fact.
5. The foreground is in trouble and not be started.