IndexOPC Unified Architecture (OPC UA) — technology overview (opcfoundation.org)
The OPC Foundation's overview of the OPC UA architecture: platform-independent, service-oriented, with built-in security and extensible information modeling.
Index
Every curated external resource in the Shopfloor index, newest first.
IndexMQTT: the standard for IoT messaging (mqtt.org)
The MQTT organization homepage: protocol resources, version history, and links to brokers, clients, and the OASIS standard.
IndexEclipse Sparkplug — specification and resources (sparkplug.eclipse.org)
The Eclipse Sparkplug project: specification, TCK, compatible products, and working-group resources for MQTT-based OT interoperability.
IndexModbus specifications and resources (modbus.org)
The Modbus Organization: current specifications for Modbus RTU, ASCII, and TCP, plus conformance and developer resources.
IndexODVA: EtherNet/IP and CIP technology (odva.org)
ODVA's technology pages covering EtherNet/IP, CIP, DeviceNet, and conformance testing for multi-vendor interoperability.
IndexEtherCAT technology introduction (ethercat.org)
The EtherCAT Technology Group's technical introduction: functional principle, distributed clocks, topologies, and performance figures.
IndexPROFINET & PROFIBUS International (profibus.com)
PROFIBUS & PROFINET International: specifications, profiles (PROFIdrive, PROFIenergy), certification, and technology news.
IndexISA standards: ISA-95, ISA-88, ISA/IEC 62443 (isa.org)
ISA's standards library, including ISA-95/IEC 62264 (enterprise–control integration), ISA-88 (batch), and ISA/IEC 62443 (OT security).
IndexNIST SP 800-82 Rev. 3: Guide to OT Security (csrc.nist.gov)
NIST SP 800-82 Rev. 3: the current federal guide to OT security — architecture, risk assessment, controls, and incident response for ICS.
IndexROS: Robot Operating System (ros.org)
The Robot Operating System project: ROS 2 documentation, middleware (DDS), packages, and the industrial (ROS-Industrial) consortium.
IndexMTConnect: shop-floor equipment connectivity standard (mtconnect.org)
MTConnect Institute: the open, read-only standard for shop-floor device data — adapters, agents, schemas, and companion specs.
IndexIEEE 802.1 Time-Sensitive Networking (TSN) (ieee802.org)
The IEEE 802.1 working group's TSN pages: task group, published standards (Qbv, Qbu, CB, Qcc), and ongoing projects.
IndexSEMI: semiconductor equipment and materials standards (semia.org)
SEMI: standards (E-series, S-series), market data, and programs spanning wafer fab equipment and materials.
IndexPLCopen: motion, safety, and IEC 61131-3 libraries (plcopen.org)
PLCopen: IEC 61131-3 motion control libraries, safety, OPC UA function blocks, and coding guidelines.
IndexAutomationML: vendor-neutral plant engineering data exchange (automationml.org)
AutomationML: the open data format for exchanging plant engineering data between tools (topology, geometry, logic, behavior).
IndexAutomation.com — news and resources (automation.com)
Automation.com: industrial automation news, tutorials, and vendor coverage from the ISA-affiliated publication.
IndexThe Automation Blog — PLC & HMI tutorials (theautomationblog.com)
Shawn Tierney's long-running PLC and HMI tutorial site: reviews, training, and plain-spoken controls commentary.
IndexHiveMQ Blog — MQTT in depth (hivemq.com)
HiveMQ's technical blog: MQTT features, Sparkplug, broker operations, and IIoT architecture at scale.
IndexOptoBlog — edge & IIoT practices (blog.opto22.com)
Opto 22's OptoBlog: edge devices, Node-RED, MQTT/Sparkplug, and practical IIoT project writeups.
IndexModern Machine Shop — machining technology (mmsonline.com)
Modern Machine Shop: CNC processes, tooling, and shop technology for metalworking manufacturers.
IndexAdditive Manufacturing — production 3D printing (additivemanufacturing.media)
Additive Manufacturing Media: production 3D printing — processes, materials, and end-use part manufacturing.
IndexHighByte — Industrial DataOps platform (highbyte.com)
HighByte: Industrial DataOps software for modeling, contextualizing, and governing data from edge to cloud.
IndexKepware industrial connectivity (Velotic) (velotic.com)
Kepware (now part of Velotic): industrial connectivity software exposing hundreds of device protocols via OPC UA, MQTT, and more.
IndexABB Control Systems — 800xA & Freelance (abb.com)
ABB Control Systems: the 800xA DCS, Freelance compact DCS, PLC automation, and related lifecycle services.