Any reasons for no output or output errors

1. The sensor is a precision device. Please do not disassemble it by yourself when using it to avoid damage to the product.

2. If the reading value is 0, check whether there is a light source and whether the product protective cover is removed.

3. The 485 bus is disconnected, or the A and B lines are connected in reverse.

4. Check whether the power supply meets the marking.