The HIMA Z7138 is a communication module produced by HIMA for industrial automation control systems. It features multi - protocol support. It can be seamlessly integrated with different network architectures to meet the automation and control needs of various industrial sectors. It is used for communication between systems and devices to achieve data exchange, monitoring, and control. For example, it supports communication protocols such as Ethernet/IP and PROFINET, and can play a role in fields like oil and gas, water treatment, and power generation. This module is equipped with two Ethernet ports, providing redundant network connection methods. This enhances the reliability and stability of communication and facilitates connection with multiple devices or networks. The maximum communication rate can reach 100Mbps, ensuring the real - time performance and response speed of the system to meet the data transmission speed requirements of industrial automation. It has a working temperature range of -25°C to 70°C and a storage temperature range of -40°C to 85°C. With strong environmental adaptability, it can operate stably in harsh industrial environments. The module measures 85×35×125 millimeters (width × height × depth) and weighs only 150 grams. It is compact and lightweight, making it easy to install and integrate into various control systems. With a protection rating of IP20, it can prevent the intrusion of objects larger than 12.5mm and is suitable for general industrial environments. In terms of its working principle, as a communication module, it is mainly responsible for realizing data communication between different devices or systems in industrial automation control systems. It connects the AC 800M controller with external devices or systems through the supported communication protocols. During the data transmission process, it packages, unpacks, and controls the transmission of data according to the corresponding communication protocols to ensure accurate and rapid data exchange, enabling the collaborative operation and monitoring of the entire system. For instance, in an industrial automation system with multiple controllers, sensors, and actuators, it can integrate and transmit data from each device, allowing the central control system to obtain real - time status information of on - site devices and send control instructions.