Rather than the classic “contact and coil” representation of ladder diagram or relay ... by providing an open architecture for distributed control systems. The result is that function blocks are ...

In this traditional architecture the resistor-dividers ... Clearly the industry would benefit from a compact and simple, isolated digital-input interface. Simplify the Digital Input to a PLC ...

When a PLC is used primarily to replace relays ... Arithmetic instructions. Almost all PLCs have simple ladder diagram instructions to add, subtract, multiply, and divide two numbers. A ladder rung ...

Traditional PLC programming resembles a relay diagram, and for simple diagrams it has the same meaning ... it has a very different architecture. This is partly to take advantage of the fact that it ...