Question

Hi, I use FMB120 and DS18B20 Temperature Sensor. 

When the sensor detect degrees below 0, it will shows -2147483648 in the IO Key 73 value.

If the sensor degrees above 0, it shows normal reading, refer IO Key 72 value.

Is this firmware error issue?

Current firmware version 03.25.15.Rev.01

Answer 1

Hello.

Please provide screenshots of your configuration.

Have you connected multiple temperature sensors? Because AVL ID 72 and 73 refer two different sensor slots, as you can have up to 4 sensors on 1 wire interface.

Verify your connection too.

Please refer to this Wiki page for information about 1-wire temperature sensors: https://wiki.teltonika-gps.com/view/1-Wire_Temperature_Sensors

Best Regards.