Connected controllers sit at the edge of OT and IT. We program for deterministic I/O behavior, maintainable firmware structure, and secure-by-design practices drawn from industrial cybersecurity guidance.
IEC 61131 & embedded practices
Whether your controller speaks IEC 61131 languages or embedded C/firmware, structured modules and clear I/O ownership prevent brittle edge devices.
How we follow it: We separate I/O, control, and communications layers; keep timing behavior explicit; and leave enough documentation for field updates without tribal knowledge.
IEC 62443 concepts (secure-by-design)
A leading framework for industrial cybersecurity — covering zones, secure development, and hardening of connected control systems.
How we follow it: We apply practical secure-by-design habits: least privilege for services, signed or controlled updates where feasible, and network exposure kept to what the application truly needs.
MQTT / OPC UA (when relevant)
Common industrial messaging and information models for controllers talking to gateways, clouds, or higher-level systems.
How we follow it: When your architecture calls for them, we use clear topic/information models, authenticated connections, and documented payload contracts so integrations stay stable.
Deterministic I/O practices
Smart controllers still have to meet scan-time and response expectations for sensors, actuators, and safety-adjacent signals.
How we follow it: We budget cycle time, debounce and filtering intentionally, and keep critical I/O paths free of non-deterministic network waits.