Modbus TCP/IP: Industrial Automation Communication Protocol

Modbus TCP/IP is a communication protocol widely used in industrial automation systems. It's an extension of the Modbus protocol, originally designed for serial communication. Modbus TCP/IP allows communication over Ethernet networks, enabling devices to exchange data and control information.

In Modbus TCP/IP, data is organized into registers, which are 16-bit values. There are different types of registers, such as input registers, holding registers, input coils, and output coils. Input registers and holding registers are used for storing data, while input coils and output coils are used for controlling devices.

Modbus TCP/IP uses a client-server architecture, where a client device initiates a request to a server device. The client sends a Modbus message to the server, which then processes the request and sends a response back to the client. The communication between the client and server is done using TCP/IP protocols.

Modbus TCP/IP supports both asynchronous and synchronous communication. In asynchronous communication, the client can send requests to the server at any time, while in synchronous communication, the client waits for a response from the server before sending another request.

Modbus TCP/IP is an open protocol, meaning it's not tied to any specific hardware or software platform. It's widely supported by various manufacturers and used in a range of industries, including manufacturing, energy, and building automation.

Overall, Modbus TCP/IP provides a reliable and efficient way for devices to communicate and exchange data in industrial automation systems.