If you are used to conventional programming, you may find ladder logic a little frustrating. Originally, it was a documentation tool for relay logic but has grown to handle modern cases.

To operate the transmitter, and especially to accommodate the vacuum-tube amplifier, older transmitters use relay logic, more typically known in broadcast engineering as a control ladder. Essentially ...

Introduction to PLCs provides an overview of programmable logic controllers used in manufacturing. This class introduces the components of PLCs and their functions, provides basic information on the ...

(That’s just one more attribute that can be assigned to that control relay C1.) It may help to think of this control relay C1 as the coil of the relay when used as an output on the right-side of the ...

This curriculum covers various topics in Advanced Manufacturing Technology, including work area safety, pneumatic circuits, advanced electrical circuits analysis, motor control systems, variable ...

Software is also available for converting a relay ladder logic program into code for input into the controller. The unit allows 400 program lines, 254 variables, 1000 array elements, six PID control ...

The most common programming language for PLCs is ladder logic (LL), which mimics the appearance of electrical relay logic diagrams. Engineers manually design the logic by arranging symbols, such ...