Abstract: In stranding process of submarine cable production, programmable logic controller (PLC) on cage strander communicates with rotating stranding cage via slip rings for control signal transmission. However, wear between slip rings and carbon brushes leads to coating damage on slip ring surface after prolonged operation, resulting in communication signal loss and other faults. An industrial wireless local area network (IWLAN) using Siemens SCALANCE W series industrial wireless communication modules and circumferentially arranged leaky coaxial cable was constructed to replace original slip ring communication method. Monitoring showed that signal strength transmitted by established wireless communication link remained between −35 dBm and −55 dBm, indicating that this solution could achieve stable transmission of control signals between main PLC and rotating stranding cage via industrial wireless communication technology. This solution improved equipment reliability and production quality stability, yielding significant economic benefits, and could provide an engineering application reference for communication failure problems in other rotating equipment.