Prosoft Modbus TCP/IP to IEC 60870-5-103 Master Gateway

Protocol Conversion Principle

• Modbus TCP/IP Protocol2: It is a widely - used communication protocol in the industrial control field. It enables controllers to communicate with each other or with other devices via networks such as Ethernet. It follows the master - slave communication technology, where the master device actively queries and operates on the slave devices. For example, an industrial computer or an industrial controller serves as the master device, and a programmable logic controller (PLC) is a typical slave device.
• IEC 60870 - 5 - 103 Protocol: It is specifically designed for the communication between protection devices (such as relays) and control systems in the power industry, based on serial communication (RS - 485)1. It supports the transmission of protection - related data, such as protection action records and device status monitoring1.
• Conversion Process: The gateway receives Modbus TCP/IP packets from the Modbus - compliant devices, parses the data and control information in the packets, and then converts them into the format and protocol required by the IEC 60870 - 5 - 103 protocol. It then sends the converted data to the IEC 60870 - 5 - 103 - compliant master station.

Features and Advantages

• Protocol Compatibility: It has excellent compatibility with both Modbus TCP/IP and IEC 60870 - 5 - 103 protocols, ensuring seamless connection and data exchange between devices of different protocols.
• High - Speed Communication: It supports high - speed data transmission, meeting the real - time requirements of industrial automation systems. It can quickly transmit a large amount of data between Modbus - based devices and IEC 60870 - 5 - 103 - based master stations.
• Reliability and Stability: It has a reliable hardware design and a stable software system. It is equipped with error - detection and correction mechanisms to ensure the accuracy and integrity of data during transmission. It also has functions such as self - diagnosis and fault - tolerance, which can quickly recover from failures and ensure the normal operation of the system.
• Configuration Flexibility: Users can flexibly configure the gateway through software to meet different application scenarios and system requirements. For example, they can set parameters such as communication baud rate, data format, and device address according to the actual situation.