Free Quilting Patterns & Tutorials & Classes in this quilting course: 1  Class #1: Fussy cutting ~ How to Make a Quilt: Free Quilting Beginners Class. 2  Class #2: Quilting Tools â What youâll need as a beginner. 3  Class #3 : How to Choose & Work with Quilting Fabric.  Class #4: How to Read & Work with a Quilt Pattern.
A Human-Machine Interface or HMI is the apparatus which presents process data to a human operator, and through which the human operator controls the process.n HMI is usually linked to the SCADA system's databases and software programs, to provide trending, diagnostic data, and management information such as scheduled maintenance procedures, logistic information, detailed schematics for a particular sensor or machine, and expert-system troubleshooting guides.
programmable logic controller (PLC) A programmable logic controller (PLC) is a modular solid state computer with custom programming. The systems are used in industrial control systems (ICS) for machinery in a wide range of industries, including many of those involved in critical infrastructure. PLCs replaced many antiquated systems such as relays, drum sequencers and cam timers, as well as other controllers.