Practical guides
Precise, sourced and dated answers on industrial HMI, software certification and compliance.
Free tools
Free tool · onlineAnalyse a SCADA alarm log online, without uploading itDrop your SCADA alarm log CSV: alarms per hour, 10-minute peak, floods, top 10, chattering, stale alarms, priorities. Runs locally, nothing is uploaded.Free tool · onlineChecking the colour contrast of an HMI supervision screenCheck the contrast of an alarm or text colour against your HMI background per WCAG 2.2: 3:1 for an alarm badge or symbol, 4.5:1 for normal text.
Industry and automation
Guide · 5 minAlarm system performance metrics (ISA-18.2, EEMUA 191): computing them from a SCADA exportAlarms per hour per console, floods, top 10 share, chattering and stale alarms, priority split: definitions, published benchmarks and how to compute them.Guide · 5 minDO-178C documents: what each one is for and in what order to write themPSAC, SDP, SVP, SCMP, SQAP, standards, SRD, SDD, SVCP, SVR, SCI, SECI, SAS: what each DO-178C document is for, the order to write them, what changes by level.Guide · 6 minEN 50128 vs EN 50716: what changes for railway softwareEN 50716:2023 replaces EN 50128 and EN 50657. Scope, levels, roles, methods, tools: what changes, what stays, and how to handle a project in transition.Guide · 7 minHigh-performance HMI: 8 rules for a web supervision screenGrey by default, one colour one meaning, every value shown against its normal range: the 8 high-performance HMI principles translated for a web HMI.Guide · 6 minBuilding an industrial monitoring dashboard with React and shadcn/uiStatus colours, LL/L/H/HH thresholds, fixed-scale trends, ISA-18.2 alarms and data quality: how to build a plant dashboard with React and shadcn/ui.Guide · 5 minHow to read a P&ID: ISA-5.1 letters, instrument bubbles and signal linesPIC-101, LSH, TT: ISA-5.1 identification letters, instrument bubble shapes (field, control room, DCS, PLC), signal line types and equipment symbols.Guide · 6 minWeb Components for SCADA and HMI dashboardsWhy standard Web Components suit SCADA and HMI screens, how to use them in Angular, React or plain HTML, feed them live data and keep them accessible.