Measuring each of the “big four” process variables has its specific peculiarities, but temperature seems particularly controversial. In fact, this apparently simple task often gets complicated. This tutorial explains why.
The KEK B-factory double-ring electron-positron collider in Japan has begun using Linux-based PLCs and open source EPICs software for beam mask and magnet controls.
Industrial video is quickly moving beyond its use as a surveillance tool. Control engineers are discovering video over IP, which combines Ethernet ease of use with video processing technology to enhance SCADA/HMI applications.