This training webinar introduces an engineer-focused overview of PLCs and PACs, explaining how modern controllers collect I/O data, execute control logic, and share information with higher-level monitoring systems. It covers key automation concepts such as PLC scan-based operation, IEC-61131-3 programming languages (ladder logic, structured text, function blocks, etc.), and how PAC platforms add an operating system for running multiple tasks like control, data logging, and remote access simultaneously. The session also reviews ICP DAS USA development tools for controller programming (including HMIWorks for Touch Screen PLC projects) and shows how SCADA software can be connected to Modbus RTU and Modbus TCP devices to build operator HMIs with trends, alarms, and reports. A live demo walks through configuring Modbus communications in SCADA, creating tags, building a basic screen with read/write objects, and displaying real-time values and trend curves—demonstrating the full workflow from field I/O to a PC-based monitoring interface.
