PLC & SCADA Jobs

A new Siemens-based material-handling line is ready for commissioning and I need a clean, well-structured PLC project that focuses on data acquisition and logging. The controllers are Siemens S7 (TIA Portal) and the HMI layer will sit on WinCC (Unified or Classic—whichever you are most comfortable with). Core objective Capture and store real-time Operational status from drives, conveyors, and sensors so that maintenance and performance dashboards can draw from a reliable historical database. Inventory levels and movement tracking may be added later, so please structure tags and DBs with scalability in mind. Scope of work •⁠ ⁠Write the PLC logic that collects the required status bits, words, and alarms. •⁠ ⁠Build WinCC screens for live visualization, manual overrid...

I need a complete technical design that shows how 280 individual water meters, each fitted with an RS485-enabled shut-off valve, can be wired, networked, and surfaced in a single cloud dashboard for a large residential complex. Scope • Network architecture – segmenting the 280 devices into practical RS485 loops, recommended cable types, addressing scheme, surge/grounding considerations, and maximum run lengths. • Gateway selection – please evaluate and recommend a commercially available RS485-to-Ethernet/LTE gateway (no brand preference yet) that can reliably push data to the cloud and withstand a residential plant room environment. • Cloud layer – outline the server or IoT platform setup that will provide real-time consumption graphs, manual/automatic...

My WinCC Explorer 8.1 runtime on a Windows 10 machine should log an operator out automatically; instead, the moment the timer expires the application freezes and never shows the standard SIMATIC logout screen. I first spotted it recently but can’t tie it to any system change, update, or new software installation because, frankly, none have been made. What I need from you is a clean, reproducible fix. Diagnose whatever is locking the HMI session, apply or guide me through the remedy (configuration tweak, script correction, patch, or hot-fix), and prove that the logout screen appears reliably after the configured idle period. Acceptance criteria: • Auto-logout functions without hanging for at least 10 consecutive test cycles. • No adverse side-effects on existing tags, ...