What protocol is commonly used for ControlLogix communication in industrial settings?

EtherNet/IP is the correct protocol commonly used for ControlLogix communication in industrial settings. This protocol allows for high-speed data transmission and can seamlessly integrate with standard Ethernet technology, which is widely adopted in many industrial environments. EtherNet/IP leverages the TCP/IP suite to enable robust networking capabilities, facilitating the connection of various devices, such as sensors and actuators, within a control architecture.

In addition to its speed and efficiency, EtherNet/IP supports a wide range of industrial applications and is designed specifically for real-time control. Its ability to handle both discrete and process control data makes it suitable for the diverse needs of modern automation systems.

While TCP/IP underlies EtherNet/IP, it is essential to distinguish that TCP/IP itself is a broader transport layer protocol, not specific to ControlLogix systems. Other protocols mentioned, such as Modbus RTU and Profibus, are indeed used in industrial settings, but they do not provide the same level of integration and functionality as EtherNet/IP when it comes to ControlLogix applications. Therefore, EtherNet/IP stands out as the preferred choice for communication within the ControlLogix platform.