Modbus polling and timeout budget: calculate the slow path
Estimate serial transaction time, include silent intervals and device response, and prevent offline devices from consuming the entire polling cycle.
Edge gateways, industrial PCs, and on-premise compute for the plant floor.
Learning paths & worksheets: Industrial data connectivity: from register to consumer · Industrial data contract template
Estimate serial transaction time, include silent intervals and device response, and prevent offline devices from consuming the entire polling cycle.
Estimate raw historian volume, distinguish acquisition from storage filtering, and validate compression against the signals and events that matter.
Compare PLCs, PACs, and software PLCs on determinism, I/O, tooling, and cost — plus when an IPC or edge controller is the better answer.
Choose industrial wireless by requirements — Wi-Fi 6 for bandwidth, private 5G for mobility and determinism, LoRa and WirelessHART for sensors.
The decisions that matter before an MQTT edge gateway leaves the lab: protocol drivers, buffering, namespaces, quality, security, and ownership.
Use latency, availability, bandwidth, data gravity, and governance to decide which analytics belong beside the machine and which can travel farther.
Protocol conversion, buffering, and context at the edge — the four gateway patterns that connect legacy equipment to modern platforms.
Opto 22's OptoBlog: edge devices, Node-RED, MQTT/Sparkplug, and practical IIoT project writeups.
HighByte: Industrial DataOps software for modeling, contextualizing, and governing data from edge to cloud.
Kepware (now part of Velotic): industrial connectivity software exposing hundreds of device protocols via OPC UA, MQTT, and more.
Industrial IoT / IIoT · MQTT · Factory Software · Industrial Networking · OPC UA · PLCs