#PLC communication
69 articles tagged with #PLC communication. This page is set to noindex per SEO configuration.
Coding Modbus TCP/IP for Arduino: A Complete Technical Guide
Complete guide to coding Modbus TCP/IP on Arduino. Learn protocol structure, implement client/server, practical examples, troubleshooting. Perfect for industrial automation projects.
PROFIBUS vs Modbus: Complete Technical Comparison for Engineers
A thorough technical comparison of PROFIBUS vs Modbus — covering protocol architecture, message framing, function codes, CRC methods, speed, diagnostics, network topology, and when to choose each. Based on the original Modicon Modbus specification and IEC 61784-1.
PROFIBUS vs PROFINET: Key Differences Explained
A detailed technical comparison of PROFIBUS vs PROFINET — covering physical layer, speed, topology, real-time classes, device models, diagnostics, safety, and application profiles. Based on IEC 61784-1 and IEC 61784-2. Written for automation engineers.
CIP Protocol Ports: How EtherNet/IP Uses Ports 44818 and 2222
CIP Protocol Ports explained: learn how EtherNet/IP uses ports 44818 and 2222 to transport CIP messages for configuration, diagnostics, and real-time I/O communication.
Modbus Troubleshooting in SCADA — 15 Real Field Problems Engineers Face
Practical Modbus troubleshooting guide for SCADA engineers. Learn 15 real field problems, exception errors, RS-485 issues, and proven solutions to fix communication fast.
What Is CIP? Common Industrial Protocol Explained
Learn how the CIP protocol works, including objects, messaging, safety, and motion. A simple, complete guide to Common Industrial Protocol for automation.
Modbus Data Types: Decode Register Values Correctly
Modbus data types explained: UINT16, INT16, hex, binary, ASCII, 32-bit integers, IEEE-754 floats, and bitmasks, plus how to pick the right format every time.
Modbus TCP/IP Explained: Complete Beginner-to-Expert Guide
Modbus TCP/IP explained from the ground up: ADU structure, encapsulation across network layers, big-endian data, the client-server model, and function codes.
Modbus TCP Port 502: Setup, Security, Troubleshooting
Modbus TCP port 502 in depth: IANA registration, connection lifecycle, client limits, firewall rules, Wireshark filters, and the TLS secure variant on port 802.
Modbus vs DNP3: A Technical Comparison for SCADA Engineers
Technical comparison of Modbus vs DNP3 (IEEE 1815) protocols covering architecture, communication layers, reliability, and cybersecurity.
Python Modbus Libraries Comparison: The Complete 2025 Guide
Compare top Python Modbus libraries—PyModbus, MinimalModbus, Modbus-tk, and more—to choose the best library for your industrial or IoT project.
Best Free Modbus Software: 10 Tools for RTU and TCP Testing
Best free Modbus software for engineers: 10 tools for RTU, TCP, and ASCII testing. Master utilities, slave simulators, sniffers, and monitors compared.
Modbus RTU to Modbus TCP: Gateway Setup and Conversion
Modbus RTU to Modbus TCP conversion step by step: frame translation byte by byte, hardware and software gateway setup, Unit ID mapping, and timeout tuning.
Modbus RTU vs Modbus TCP: Frames and Key Differences
Modbus RTU vs Modbus TCP compared field by field: frame structure, CRC versus MBAP header, addressing, performance, and migrating serial devices to Ethernet.
Modbus Protocol Explained: RTU, TCP, ASCII, and Frames
Modbus protocol explained end to end: RTU, TCP, and ASCII variants, frame structure, function codes, master-slave architecture, and field troubleshooting.