THE use of function blocks for programming of programmable logic controllers (PLCs) is gaining wider acceptance. Rather than the classic “contact and coil” representation of ladder diagram or relay ...

Some common pitfalls in machine safety have to do with not wiring devices correctly. Many devices today can cover a range of safety levels, such as SIL 1 through SIL 3, but have different wiring ...

When learning ladder logic, I was told that some new PLC systems were moving to scripted programming languages. My instructor assured us that we would not need to know anything other than ladder ...

A three-day training program for automation technology and IEC 61131 programming will occur on five separate dates in 2016. A three-day training program for automation technology and IEC 61131 ...

Hardware for PLCs provides essential information on the basic functions of a PLC's hardware components and how they work together to execute a PLC program. The hardware components of a PLC are the ...