1. The cable may be chemically corroded. The Motorola Programming Cable RS232 RJ45 Manufacturers tell you that the cable is buried directly in the area with an acid and alkali effect, which will often cause the cable's packaging or outer sheath to be corroded, lowering can also lead to cable failure.

2. The Long-term overload operation. The Motorola Programming Cable RS232 RJ45 Manufacturers tell you that long-term overload operation of the cable, due to the thermal effect of the current, the load current will inevitably cause the conductor to heat up when the load current passes through the cable.
And the Motorola Programming Cable RS232 RJ45 Manufacturers tell you that the effect of the electric charge and the eddy current loss of the steel armor and the dielectric loss of the insulating medium will also cause the additional heat, thereby increasing the temperature of the cable.
The above is the Motorola Programming Cable RS232 RJ45 manufacturer's introduction and analysis of what problems can arise when using cables, hope it helps you.