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MODBUS

@sparksystemes

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Why it worked

The post effectively breaks down complex technical information into easily digestible comparisons using clear visuals and concise text. This format is highly shareable for individuals seeking to understand industrial communication protocols.

Summary

This image compares Modbus TCP/IP and Modbus RTU, detailing their differences in communication methods, distance, speed, topology, and architecture. It highlights that both utilize the same Modbus protocol for function codes, registers, and data models.

Structure

1Title: MODBUS
2Comparison: Modbus TCP/IP vs. Modbus RTU
3Modbus TCP/IP details (Ethernet)
4Modbus RTU details (Serial)
5Commonality: Both use the same Modbus protocol

On-screen text

MODBUS MODBUS TCP/IP Ethernet Based Communication Ethernet (RJ45) Ethernet Port DISTANCE Up to 100 meters per Ethernet segment SPEED 10 / 100 / 1000 Mbps TOPOLOGY Star (Switch-based) Scalable to large networks ARCHITECTURE Client - Server (Multiple clients, 1 server) BEST FOR High speed, large networks, IT & enterprise integration MODBUS RTU Serial Based Communication RS-485 (Primary) RS-232 (Optional) Point-to-point only DISTANCE Up to 1200 meters (Typical with RS-485 at low baud rate) SPEED 9.6 - 115.2 kbps typical (Up to 921.6 kbps at short distance) TOPOLOGY Multi-drop (RS-485) Up to 32 devices per segment (with proper loading) ARCHITECTURE Master - Slave (1 Master, Multiple Slaves) BEST FOR Industrial environments, long distance, reliable, low cost BOTH USE THE SAME MODBUS PROTOCOL (Function Codes, Registers, Data Model)

Original caption

Modbus TCP/IP and Modbus RTU are not competing technologies. They solve different communication needs. 🔹 Modbus TCP/IP uses Ethernet, making it the preferred choice for high-speed communication, large networks, and seamless integration with modern control systems. 🔹 Modbus RTU uses serial communication, typically RS-485, making it ideal for long cable runs, simple field networks, and cost-effective industrial installations. Both use the same Modbus protocol, meaning the function codes, registers, and data model remain the same. The main difference is how the data is transported. Choosing the right one depends on your application, network size, distance, existing infrastructure, and performance requirements. #Instrumentation #Automation #IndustrialAutomation #Modbus #PLC #SCADA #ElectricalEngineering