OT Lexicon: Industrial Network
PLC, Profinet & Diagnostics
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About
OT Lexicon explains industrial networks and operational technology in a clear, practical way. Learn IP addresses, gateways, VLANs, Profinet, OPC UA, Modbus, ports, subnet masks, DNS, NTP, fiber optics and many more OT fundamentals.
Built for electricians, technicians and OT beginners, the app turns complex network terms into simple explanations, everyday comparisons, diagrams, practical plant examples and quiz questions.
Premium unlocks knowledge checks, custom company terms, plant examples, favorite notes and a practical port and protocol overview. Ideal for quick reference in the workshop, during commissioning or while troubleshooting industrial systems.
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What's New in OT Lexicon
1.2
October 9, 2026
New in version 1.2: • New premium Diagnostics & Practice section • Clear guidance for attenuation, Rx/Tx, CRC, packet loss, latency and jitter • Cable tester assistant for opens, shorts, reversed wires, split pairs and shielding faults • New practical knowledge about M12 coding, Industrial Ethernet, NAT, routing and firewalls • MRP, RSTP, PRP and HSR redundancy plus managed-switch diagnostics • SFPs, wavelengths, link budgets, PoE classes and power planning • EMC, shielding, equipotential bonding, network topologies and switch backups • Illustrated T568A and T568B RJ45 wiring • Navigation and stability improvements
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Subscriptions & In-App Purchases
$3.99
OT Lexicon Premium
Unlock quiz, examples, notes and protocol overview.
