Rung 6 in the Fig. 1 ladder diagram program shows an example of a function block that is used to send data over a network. Summary. As PLCs are applied to increasingly complicated tasks, and as people ...

For many plant operators, the continual pressure to improve operations while reducing downtime is partly solved by the use of function blocks for PLC programming. “Function blocks give you time ...

Promulgated in 2005, IEC 61499 defines a reference architecture for open, distributed control systems. Thus, a function block can be used on different processing systems and equipment, as well as ...