SD series I/O modules are up to IP67 protection level, with excellent dustproof and waterproof performance, designed for applications in harsh environments. The module consists of a master and a slave, the master supports mainstream Fieldbus protocols, such as PRONFINET, EtheCAT, and EtherNet/IP, the master can be connected to support IO-LINK protocol slave or sensor, and the IO-LINK protocol simplifies the process of installation and maintenance of the equipment, but also provides a wealth of diagnostic functions, which helps to quickly locate and solve the problem, thus significantly improving the overall performance and reliability of the system. This significantly improves the overall performance and reliability of the system.