This paper describes the architecture of a retargetable ladder diagram based software tool for programmable logic controllers (PLCs), which is based on the IEC 611311-3 specification. We propose here ...

On the surface, a programmable logic controller (PLC) might seem like nothing more than a generic microcontroller, perhaps outfitted to operate in industrial settings with things like high ...

Ladder logic is the basis of most control functions Ladder logic uses switch or relay contacts to implement Boolean expressions. In years past, ladder logic was made possible with discrete relays and ...