The upper computer is connected to LM100 and reads the parameters of sensor connect to LC144. It is found that timeout often occur.

Remote testing found that the response timeout set on the upper computer is too small, only 1 second.
The interval between TX and RX on the upper computer is also about 1 second, sometimes exceeding 1 second
Set the response timeout on the upper computer to 5 seconds and no more timeout occurred.